Publications - Publikationer https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Bcontroller%5D=Publications&cHash=b9ee6d471ac671e9b20804c309d72c1b en-us PURE Extension typo3support@science.au.dk (Web Department) 30 <![CDATA[Dark brooder pullets are less active than Non-brooder pullets, but show similar level of synchronisation at the resource areas]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=6893123a-7a4f-4cba-a2cd-87b9a2422eeb&tx_pure_pure5%5BshowType%5D=pub&cHash=25e1cfad0e7853834fba18682ec423df Martin-Cicera, A., Lyrakis, M., Riber, A. B., et al. Maternal care in commercial chickens can partially be replaced with dark brooders that offer heat and a dark area to rest and possibly avoid negative social interactions. Previous research has established the positive effects of dark brooders on reducing disturbance during resting in young pullets and injurious pecking in pullets and laying hens, which could reduce overall activity levels. The objective of this study was to employ precision livestock farming techniques to compare the overall activity levels and behavioural synchrony at resources in pullets reared with dark brooders until 41 days of age and those reared with whole house heating. Four brooder treatments, varying in size (Small/Large) and deployment method (Raised/Fixed), which could have implications for commercial use, were employed. Activity of the whole pen floor area and behavioural synchrony in drinker and feeder areas were automatically assessed over a 12-hour photoperiod at 10 and 60 days of age. Pixel change detection gauged overall activity across the pen, while an object detection model evaluated pullet behavioural synchrony. The analysis revealed increased activity levels in non-Brooder pullets compared to those in most Brooder treatments at both 10 and 60 days of age. However, no significant differences in behavioural synchrony were observed between Brooder and non-Brooder pullets. The underlying mechanism of dark brooder's effects on the activity levels and behaviour synchrony remains unclear, but the observed reduction in activity levels in brooded pullets likely corresponds to increased resting behaviour and reduced injurious pecking. Furthermore, it is noteworthy that only a small percentage of pullets (up to 57.14%) were observed to use the resources simultaneously. This underscores the importance of conducting additional research to delve into the effects of resource allocation on both behavioural synchrony and activity levels in pullets. We observed minimal differences in the behaviour of pullets raised under different brooder types, suggesting that the simplest (Small-Fixed) brooders may be suitable for commercial use.

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Forskning Sat, 01 Jun 2024 17:38:46 +0200 6893123a-7a4f-4cba-a2cd-87b9a2422eeb
<![CDATA[A scoping review of the use of bioacoustics to assess various components of farm animal welfare]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=4ad67cda-02af-4746-b5fd-92f5071a999a&tx_pure_pure5%5BshowType%5D=pub&cHash=22e85c20f47736fb5ca30835ec57f9ae Coutant, M. P., Villain, A. S. ., Briefer, E. F. Forskning Sat, 01 Jun 2024 17:38:46 +0200 4ad67cda-02af-4746-b5fd-92f5071a999a <![CDATA[Bioacoustic sensors to monitor farm animal welfare: why the ethology matters]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=a446ed7f-7a5a-48c7-8b5d-67c0d0ca6129&tx_pure_pure5%5BshowType%5D=pub&cHash=e5c804b96c1da1587de66da3cee6aae6 Coutant, M. P. Forskning Wed, 15 May 2024 17:38:46 +0200 a446ed7f-7a5a-48c7-8b5d-67c0d0ca6129 <![CDATA[The Relevance of Shame in Dog-Human Relationships]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=484af99f-804f-4a20-9e0f-cc536fd298a5&tx_pure_pure5%5BshowType%5D=pub&cHash=a5d086235573bbf480199bbe8700ddc1 Kollerup Oftedal, L., Harfeld, J. L. Forskning Mon, 01 Jun 2020 17:38:46 +0200 484af99f-804f-4a20-9e0f-cc536fd298a5 <![CDATA[A high fat to vitamin E ratio in the feed protects and improves uptake of the natural form of vitamin E in postweaning calves]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=51ad5c57-19ea-4880-b423-9ce2708c6254&tx_pure_pure5%5BshowType%5D=pub&cHash=42f1eb1b899a3d3e99e1b63ccc2556f6 Lashkari, S., Jensen, S. K., Foldager, L., Larsen, T., Vestergaard, M. . In postweaning calves, it is a challenge to maintain the plasma vitamin E level at or above the recommended level (3 µg/mL), which is linked to a good immune response. It has been unclear until now why the provision of solid feed with concentrations below 200 mg/kg feed of vitamin E is ineffective in maintaining the plasma vitamin E level of calves above the recommended plasma level postweaning. The present study was conducted to investigate if a high fat to vitamin E ratio in the concentrate could protect and improve the delivery of the natural form of vitamin E (RRR-α-tocopherol) to calves postweaning. Thirty calves were included in the experiment from 2 weeks preweaning until 2 weeks postweaning (Weeks −2, −1, 0 [weaning], 1, and 2 relative to weaning) and fed one of three concentrates in which lecithin mixture provided the fat supplement: control (77 mg/kg of vitamin E and 4.9% DM of crude fat; CONT), medium level of vitamin E supplemented (147 mg/kg of vitamin E and 7.7% DM of crude fat; MedVE) or high level of vitamin E supplemented (238 mg/kg of vitamin E and 12.4% DM of fat; HiVE). Thus, there was a comparable ratio of fat to vitamin E (520–630) in the three concentrates. During the 2 weeks postweaning, final body weight (92 ± 2 kg), average daily gain (917 ± 51 g/day) and concentrate intake (2.2 ± 0.09 kg/day; mean of treatment ± standard error) were unaffected by treatment and the interaction between treatment and week. There was an interaction between treatment and week for vitamin E intake pre- (p < 0.001) and postweaning (p < 0.001). There was an interaction between treatment and week (p < 0.001) for plasma vitamin E level postweaning, and it was 2.5, 3.1, and 3.8 µg/mL in CONT, MedVE, and HiVE, respectively, at Week 1 postweaning. In addition, plasma vitamin E levels at Week 2 postweaning were 2.6, 3.6 and 4.8 µg/mL in CONT, MidVE and HiVE respectively. The results show that 147 mg/kg of lecithin-protected vitamin E in the concentrate is needed to secure a plasma vitamin E level well above the recommended level. In addition, lecithin-protected vitamin E elevated the plasma level of triglycerides and nonesterified fatty acids.

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Forskning Wed, 01 May 2024 17:38:46 +0200 51ad5c57-19ea-4880-b423-9ce2708c6254
<![CDATA[Two millennia of climate change, wildfires, and caribou hunting in west Greenland]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=101460ba-5e37-4183-867d-38b18c6b57c8&tx_pure_pure5%5BshowType%5D=pub&cHash=ae030f4e86acd99ef7336d946d233b4e Strunk, A., Krüger, S., Jensen, J. F., Olsen, J., Jessen, C. Changing climatic conditions is a perpetual circumstance for mankind. In this study, we investigate local environmental and climatic changes near Kangerlussuaq, west Greenland. Our reconstruction is based on a lake sediment core and methods include chemical proxies and a palynological analysis. The investigated site is located 15 km from the Aasivissuit Inuit summer hunting ground, which has been in use for caribou hunting for more than 2000 years. The presented climatic reconstruction covers the time from c. 560 CE to present time. We identify three distinct periods of climate regimes: From c. 560–1100 CE conditions were stable, warm and humid, and summer temperatures were 1.5–2°C warmer than today. 1100–1600 was a period of cooler and very arid conditions with more sea ice, corresponding to the Neoglacial cooling. In this period, we detect two wildfire events and subsequent temporary caribou abandonment of the area. From 1600 to present we find increasingly warmer conditions with more precipitation and less extensive sea ice cover, gradually approaching today’s climate regime in Kangerlussuaq. We review the existing literature regarding the Aasivissuit summer hunting ground, which was first used concurrently with the detected cooling. Despite climatic deterioration, the hunting ground was regularly in use throughout the Neoglacial and onwards, with peak hunting intensity in the early 1700s. The detected wildfires and reindeer abandonment are interpreted to be localized events at the coring site and did not affect the hunting ground. Our findings highlight the resilience of the Inuit hunters to climatic changes as well as the advantages and limitations of local environmental reconstructions.

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Forskning Mon, 01 Jan 2024 17:38:46 +0100 101460ba-5e37-4183-867d-38b18c6b57c8
<![CDATA[Protecting the piglet gut microbiota against ETEC-mediated post-weaning diarrhoea using specific binding proteins]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=25bc36d4-b2ce-46e9-9d81-366350fad424&tx_pure_pure5%5BshowType%5D=pub&cHash=7906a2c3bd4488be5979b0e7cc0040a1 Jenkins, T. P., Ács, N., Arendrup, E. W., et al. Post-weaning diarrhoea (PWD) in piglets presents a widespread problem in industrial pig production and is often caused by enterotoxigenic E. coli (ETEC) strains. Current solutions, such as antibiotics and medicinal zinc oxide, are unsustainable and are increasingly being prohibited, resulting in a dire need for novel solutions. Thus, in this study, we propose and evaluate a protein-based feed additive, comprising two bivalent heavy chain variable domain (VHH) constructs (VHH-(GGGGS)3-VHH, BL1.2 and BL2.2) as an alternative solution to manage PWD. We demonstrate in vitro that these constructs bind to ETEC toxins and fimbriae, whilst they do no affect bacterial growth rate. Furthermore, in a pig study, we show that oral administration of these constructs after ETEC challenge reduced ETEC proliferation when compared to challenged control piglets (1-2 log10 units difference in gene copies and bacterial count/g faeces across day 2–7) and resulted in week 1 enrichment of three bacterial families (Prevotellaceae (estimate: 1.12 ± 0.25, q = 0.0054), Lactobacillaceae (estimate: 2.86 ± 0.52, q = 0.0012), and Ruminococcaceae (estimate: 0.66 ± 0.18, q = 0.049)) within the gut microbiota that appeared later in challenged control piglets, thus pointing to an earlier transition towards a more mature gut microbiota. These data suggest that such VHH constructs may find utility in industrial pig production as a feed additive for tackling ETEC and reducing the risk of PWD in piglet populations.

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Forskning Wed, 01 May 2024 17:38:46 +0200 25bc36d4-b2ce-46e9-9d81-366350fad424
<![CDATA[Variations in salivary oxytocin and eye caruncle temperature indicate response to environmental enrichment material in fattening pigs]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=1a64a109-c51c-4c63-8fd5-e830af8a04ea&tx_pure_pure5%5BshowType%5D=pub&cHash=1046e77ee9e91129888dcc14fc5ff73e Amorim Franchi, G., R. Moscovice, L., Telkänranta, H., Pedersen, L. J. Forskning Sat, 01 Jun 2024 17:38:46 +0200 1a64a109-c51c-4c63-8fd5-e830af8a04ea <![CDATA[Variations in the persistence of 5′-end genomic and subgenomic SARS-CoV-2 RNAs in wastewater from aircraft, airports and wastewater treatment plants]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=c80fd1af-fd36-4e9a-a898-210ae348d2c7&tx_pure_pure5%5BshowType%5D=pub&cHash=63cd503ab0d373ec583d0b6f1fd74868 Tang, M. H. E., Bennedbaek, M., Gunalan, V., et al. Wastewater sequencing has become a powerful supplement to clinical testing in monitoring SARS-CoV-2 infections in the post-COVID-19 pandemic era. While its applications in measuring the viral burden and main circulating lineages in the community have proved their efficacy, the variations in sequencing quality and coverage across the different regions of the SARS-CoV-2 genome are not well understood. Furthermore, it is unclear how different sample origins, viral extraction and concentration methods and environmental factors impact the reads sequenced from wastewater. Using high-coverage, amplicon-based, paired-end read sequencing of viral RNA extracted from wastewater collected directly from aircraft, pooled from different aircraft and airport buildings or from regular wastewater plants, we assessed the genome coverage across the sample groups with a focus on the 5′-end region covering the leader sequence and investigated whether it was possible to detect subgenomic RNA from viral material recovered from wastewater. We identified distinct patterns in the persistence of the different genomic regions across the different types of wastewaters and the existence of chimeric reads mapping to non-amplified regions. Our findings suggest that preservation of the 5′-end of the genome and the ability to detect subgenomic RNA reads, though highly susceptible to environment and sample processing conditions, may be indicative of the quality and amount of the viral RNA present in wastewater.

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Forskning Wed, 01 May 2024 17:38:46 +0200 c80fd1af-fd36-4e9a-a898-210ae348d2c7
<![CDATA[Optimal protein concentration in diets for sows during the transition period]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=1cf44d50-10f0-4e02-b4b0-fc428612d08e&tx_pure_pure5%5BshowType%5D=pub&cHash=97098e1b18852dbc36cef8f63496bec2 Johannsen, J. C., Sorensen, M. T., Theil, P. K., Bruun, T. S., Farmer, C., Feyera, T. The aim of the present study was to determine the optimal concentration of dietary protein required in transition diets for multiparous sows that enhance the farrowing process, colostrum production, and subsequent lactation performance. Forty-eight multiparous sows were allotted to one of six dietary treatments according to body weight (290 ± 3 kg) and parity (3.8 ± 0.2) from day 108 of gestation until 24 h after the onset of farrowing. The diets were isoenergetic and contained increasing concentrations of dietary protein (expressed as standardized ileal digestible [SID] Lys) and were supplied at a daily feed supply of 3.8 kg. On day 108 of gestation and days 2, 7, 14, 21, and 28 of lactation, body weight, and back fat thickness were recorded, and blood was sampled on day 108 of gestation, at the onset of farrowing, and days 3, 10, 17, and 24 of lactation from the sows for analysis of plasma metabolites. On day 115 of gestation, urine, and feces were collected for nitrogen (N) balance. The number of liveborn and stillborn piglets and time of birth were recorded and blood from every fourth piglet was sampled at birth for blood gas analysis. Piglets were weighed individually from birth until weaning, to estimate the colostrum and milk yield of the sows. Colostrum and milk samples were collected, and their compositions were determined. On days 3 and 28 of lactation, sows were injected with deuterium oxide to estimate body composition. The N utilization was maximized when the concentration of SID Lys in the transition diet was 6.06 g/kg (P < 0.01). When urinary concentrations of urea were expressed relative to creatinine, the relative concentration of urea remained low until a dietary concentration of 6.08 g SID Lys/kg, above which the relative concentration of urea increased (P < 0.01). Stillbirth rate increased linearly with increasing SID Lys concentration in the transition diet (P < 0.001), thus the concentration of SID Lys should be kept as low as possible without impairing sow performance excessively. A carry-over effect on milk yield was observed, showing that a dietary SID Lys concentration of 5.79 g/kg during transition optimized milk production at an average yield of 13.5 kg/d (P = 0.04). Increasing loss of body fat in lactation was observed with increasing SID Lys concentration in the transition diet (P = 0.03). In conclusion, the transition diet of multiparous sows should contain 5.79 g SID Lys/kg when fed 3.8 kg/d (13.0 MJ ME/kg), for a total SID Lys intake of 22 g/d.

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Forskning Fri, 01 Mar 2024 17:38:46 +0100 1cf44d50-10f0-4e02-b4b0-fc428612d08e
<![CDATA[Can individual variation in food neophobia explain variability in dairy calf feeding behavior patterns and performance?]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=7abbe23c-9327-406f-838f-ab8d6ccc96be&tx_pure_pure5%5BshowType%5D=pub&cHash=c3d77dc7d9d287891775fa44cf1b4975 Woodrum Setser, M. M., Neave, H. W., Costa, J. H.C. Food neophobia is the avoidance of novel feeds, arising from an attempt to avoid potentially toxic and unwanted feeds, and is very common in ruminants. In commercial dairy settings, hesitancy to consume novel feeds is detrimental to animal performance and may be associated with other traits that can negatively affect animals in intensive and modern production systems. The aim of this study was to investigate the relationship between food neophobia and the development of solid and milk feeding behaviors, and consequently with calf performance up to two weeks post-weaning. We subjected dairy calves at 83 ± 3 d of age to a food neophobia test with a novel feed (corn silage-based total mixed ration), a familiar feed (alfalfa hay), and an empty container. Behaviors measured from this food neophobia test were condensed into three factors using a principal component analysis: ‘Feed Avoidant’, ‘Active’, and ‘Attentive’. A regression analysis was performed to assess if scores for the three factors were associated with feeding behavior patterns measured via an automatic feeder system, including total milk intake, rewarded and unrewarded visits to the milk feeder, total calf starter intake, and age at which calves first consumed ≥ 1 kg of calf starter. Factor 1 (‘Feed Avoidant’) was positively associated with the number of rewarded visits to the automated milk feeder but was not associated with intake of calf starter or milk replacer, nor performance of dairy calves. The other factors identified from the food neophobia test showed associations with feeding behavior patterns and performance. Factor 2 (‘Active’) was positively associated with calf starter intake during the weaning, post-weaning, and total periods, and was associated with a younger age at which calves consumed 1 kg of calf starter. Factor 3 (‘Attentive’) was positively associated with number of rewarded visits to the feeder during preweaning, increased calf starter intake during weaning and total periods, and higher preweaning ADG. These results suggest that individual variation in the willingness to interact with novel and familiar feeds may not play a large role in the development of solid feeding behaviors or performance of group housed dairy calves, but other traits identified from the food neophobia test are associated with performance and feeding behavior that can be measured in standardized tests.

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Forskning Wed, 01 May 2024 17:38:46 +0200 7abbe23c-9327-406f-838f-ab8d6ccc96be
<![CDATA[Redox balance and immunity of piglets pre‑ and post‑E. coli challenge after treatment with hemp or fish oil, and vitamin E]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=62274541-9cfe-44e2-9288-b68320ef0292&tx_pure_pure5%5BshowType%5D=pub&cHash=bf932f9055c6291507efd0146e8c25bb Madsen, P. A., Jensen, S. K., Lauridsen, C. Forskning Wed, 01 May 2024 17:38:46 +0200 62274541-9cfe-44e2-9288-b68320ef0292 <![CDATA[Climate and environmental effects of nutritional mitigation options to reduce enteric methane in dairy cattle]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=4d591def-463b-41c4-91b7-dc75255d0ecc&tx_pure_pure5%5BshowType%5D=pub&cHash=4e412133efd2b8e528438d36e361dd0d Dorca-Preda, T., Olijhoek, D. W., Mogensen, L., Lund, P., Kristensen, T. Nutritional mitigation strategies represent an option to reduce enteric methane emissions from ruminants, but these strategies must not have undesirable side effects. Therefore, the present study aimed to analyze the environmental effects of supplementation of typical dairy cow feeding rations in Denmark (S0) with 20 g extra fatty acids per kg dry-matter (S1), 10 g nitrate per kg dry-matter (S2), and 60 mg 3-nitrooxypropanol (3-NOP) per kg dry-matter (S3). A cradle-to-farm gate life cycle assessment approach was used, where fifteen environmental impacts were assessed to capture the environmental effects. Pairwise Monte Carlo simulations were conducted to identify statistically significant results. It was found that the climate impact per kg of milk decreased for all the strategies (−7 % in S1 and S2 and −13 % in S3) compared to S0. Furthermore, lower land use and land use change emissions were determined by the partial replacement of soybean meal with cracked rapeseed (in S1) or nitrate (in S2). The reduction in the level of enteric methane also contributed to decreases in the toxicity-related impacts of organic chemicals in S1. The use of nitrate in S2 also involved a decrease in the use of soybean meal, which contributed to decreases in the land use impacts. In strategies S2 and S3 increases in other environmental impacts were observed compared to S0 because of the manufacturing of nitrate or 3-NOP, or higher N excretion and emission at supplementation with nitrate. It was concluded that S3 was more effective in reducing the climate (and human-toxicity impacts of organic substances) impacts, while S1 caused small decreases in a wider range of environmental impacts. The present study has an important contribution to quantifying a wide range of environmental effects for intensive dairy and regarding the implementation of nutritional strategies in dairy cattle to reduce enteric methane.

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Forskning Sat, 01 Jun 2024 17:38:46 +0200 4d591def-463b-41c4-91b7-dc75255d0ecc
<![CDATA[Generalized myasthenia gravis with acetylcholine receptor antibodies]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=b670de57-d904-428b-8ee2-bbb594eda7ca&tx_pure_pure5%5BshowType%5D=pub&cHash=8557a0515d01431bb92217ac0ca70077 Gilhus, N. E., Andersen, H., Andersen, L. K., et al. Background: Generalized myasthenia gravis (MG) with antibodies against the acetylcholine receptor is a chronic disease causing muscle weakness. Access to novel treatments warrants authoritative treatment recommendations. The Nordic countries have similar, comprehensive health systems, mandatory health registers, and extensive MG research. Methods: MG experts and patient representatives from the five Nordic countries formed a working group to prepare treatment guidance for MG based on a systematic literature search and consensus meetings. Results: Pyridostigmine represents the first-line symptomatic treatment, while ambenonium and beta adrenergic agonists are second-line options. Early thymectomy should be undertaken if a thymoma, and in non-thymoma patients up to the age of 50–65 years if not obtaining remission on symptomatic treatment. Most patients need immunosuppressive drug treatment. Combining corticosteroids at the lowest possible dose with azathioprine is recommended, rituximab being an alternative first-line option. Mycophenolate, methotrexate, and tacrolimus represent second-line immunosuppression. Plasma exchange and intravenous immunoglobulin are used for myasthenic crises and acute exacerbations. Novel complement inhibitors and FcRn blockers are effective and fast-acting treatments with promising safety profiles. Their use depends on local availability, refunding policies, and cost–benefit analyses. Adapted physical training is recommended. Planning of pregnancies with optimal treatment, information, and awareness of neonatal MG is necessary. Social support and adaptation of work and daily life activities are recommended. Conclusions: Successful treatment of MG rests on timely combination of different interventions. Due to spontaneous disease fluctuations, comorbidities, and changes in life conditions, regular long-term specialized follow-up is needed. Most patients do reasonably well but there is room for further improvement. Novel treatments are promising, though subject to restricted access due to costs.

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Forskning Wed, 01 May 2024 17:38:46 +0200 b670de57-d904-428b-8ee2-bbb594eda7ca
<![CDATA[Individuality of calves]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=72f5bb54-4d83-4e23-a782-d5517970ba49&tx_pure_pure5%5BshowType%5D=pub&cHash=bb1af3167d9b5cc5431c36494b53e4ff Woodrum Setser, M. M., Neave, H. W., Costa, J. H.C. Animal personality has established connections with animal performance, resilience, and welfare which are related to stable behavioral patterns. Precision livestock technologies introduce the opportunity to measure these behavior patterns automatically and noninvasively. Thus, the primary aim of this study was to determine if personality traits in dairy calves measured via standardized personality assessments were associated with activity measured via a commercially available accelerometer. Secondary aims of this study were to investigate if personality traits were associated with feeding behaviors measured via an automatic feeding system (AFS) and with average daily gain (ADG). We characterized personality traits of Holstein calves (n = 49) utilizing standardized personality (novel environment, novel person, novel object, and startle) tests. Behaviors from these tests were summarized and 3 factors were extracted from a principal component analysis to represent calf personality traits: fearful, active, and explorative. Factor scores were regressed against behaviors from the accelerometer and AFS and with ADG. We found that calves that were more active were associated with taking more steps in the home environment, consuming more calf starter, and with reaching the benchmark of 1 kg of starter consumed in a day at a younger age. The trait active was also associated with greater ADG throughout the study. In addition, calves that were more explorative in the personality tests were associated with less starter consumed and lower ADG specifically during the weaning period. The findings of this research contribute to the existing literature by further establishing the links between personality traits and the daily behavioral patterns and performance of young calves. This study suggests the potential for using precision technology to assess and characterize personality traits, thereby enhancing their practical applicability on farms. Future research should focus on evaluating how personality traits, as measured through standardized assessments and precision technologies, correlate with deviations in behavior observed in dairy calves during stressors.

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Forskning Wed, 01 May 2024 17:38:46 +0200 72f5bb54-4d83-4e23-a782-d5517970ba49
<![CDATA[Strengthening Animal Welfare in the Green Transition]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=e15c030c-e6f9-4f48-a39a-2c73d0cb92ee&tx_pure_pure5%5BshowType%5D=pub&cHash=348d6d51555e92cbb904b0a33215e38a Mc Loughlin, E. T. Forskning Tue, 19 Mar 2024 17:38:46 +0100 e15c030c-e6f9-4f48-a39a-2c73d0cb92ee <![CDATA[Book Review: Indifference: On the Praxis of Interspecies Being]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=3738a9f1-9afd-4c16-a808-147ad56dc145&tx_pure_pure5%5BshowType%5D=pub&cHash=71fa01321fe44145ce2555fef79a37bd Mc Loughlin, E. T. Forskning Sun, 28 Apr 2024 17:38:46 +0200 3738a9f1-9afd-4c16-a808-147ad56dc145 <![CDATA[Effects of heat stress on feed intake, milk yield, milk composition, and feed efficiency in dairy cows: A meta-analysis]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=3869f283-bbcb-47fd-8ebe-5eae75863e4c&tx_pure_pure5%5BshowType%5D=pub&cHash=5aa595350a11dd7af8073370e9bd1ef6 Chen, L., Thorup, V. M., Kudahl, A. B., Østergaard, S. Key w]]> Forskning Sun, 19 Nov 2023 17:38:46 +0100 3869f283-bbcb-47fd-8ebe-5eae75863e4c <![CDATA[In vivo assessment of the antiparasitic effects of Allium sativum L. and Artemisia absinthium L. against gastrointestinal parasites in swine from low-input farms]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=fe9f51f5-84f6-4374-b9e9-725be24b57cd&tx_pure_pure5%5BshowType%5D=pub&cHash=49bf4df3aebce6ba6f0c6ebb74164398 Băieş, M. H., Cotuţiu, V. D., Spînu, M., et al. Background: Ethno-veterinary practices could be used as a sustainable developmental tool by integrating traditional phytotherapy and husbandry. Phytotherapeutics are available and used worldwide. However, evidence of their antiparasitic efficacy is currently very limited. Parasitic diseases have a considerable effect on pig production, causing economic losses due to high morbidity and mortality. In this respect, especially smallholders and organic producers face severe challenges. Parasites, as disease causing agents, often outcompete other pathogens in such extensive production systems. A total of 720 faecal samples were collected in two farms from three age categories, i.e. weaners, fatteners, and sows. Flotation (Willis and McMaster method), modified Ziehl–Neelsen stained faecal smear, centrifugal sedimentation, modified Blagg technique, and faecal cultures were used to identify parasites and quantify the parasitic load. Results: The examination confirmed the presence of infections with Eimeria spp., Cryptosporidium spp., Balantioides coli (syn. Balantidium coli), Ascaris suum, Oesophagostomum spp., Strongyloides ransomi, and Trichuris suis, distributed based on age category. A dose of 180 mg/kg bw/day of Allium sativum L. and 90 mg/kg bw/day of Artemisia absinthium L. powders, administered for 10 consecutive days, revealed a strong, taxonomy-based antiprotozoal and anthelmintic activity. Conclusions: The results highlighted the therapeutic potential of both A. sativum and A. absinthium against gastrointestinal parasites in pigs. Their therapeutic effectiveness may be attributed to the content in polyphenols, tocopherols, flavonoids, sterols, sesquiterpene lactones, and sulfoxide. Further research is required to establish the minimal effective dose of both plants against digestive parasites in pigs.

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Forskning Sun, 01 Dec 2024 17:38:46 +0100 fe9f51f5-84f6-4374-b9e9-725be24b57cd
<![CDATA[Lige børn leger bedst]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=4a926891-1fc5-422f-8f7b-a274751a8943&tx_pure_pure5%5BshowType%5D=pub&cHash=f0b156295705b0cf7ef405db16bb6946 Thomsen, P. T. Formidling Mon, 01 Apr 2024 17:38:46 +0200 4a926891-1fc5-422f-8f7b-a274751a8943 <![CDATA[Quantitative distribution of flavan-3-ols, procyanidins, flavonols, flavanone and salicylic acid in five varieties of organic winter dormant Salix spp. by LC-MS/MS]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=d1ae1019-1d9a-4e58-800d-c6cb96754f4a&tx_pure_pure5%5BshowType%5D=pub&cHash=1991c3be570a0029b189186e8a2ed173 Curtasu, M. V., Nørskov, N. P. Willow trees (Salix spp.) exhibit remarkable genetic and phenotypic diversity, yielding a broad spectrum of bioactive compounds, notably valuable phenolic compounds such as condensed tannins (phenolic polymers), flavonoids, salicylic glucosides, and phenolic compounds. These enhance the economic value of willow crops and make them suitable for circular bioeconomy. Phenolic compounds known for their diverse applications as antioxidants, antimicrobial agents, pharmaceuticals, nutraceuticals and antiseptics and more, find a natural source in willow. This study aimed to elucidate the composition of 12 flavonoids and salicylic acid in different segments of five organic winter dormant willow species (S. daphnoides, S. fragilis, S. dasyclados, S. viminalis, and S. dasyclados x viminalis) using quantitative analysis and providing valuable insights into their high-value phenolic compounds. Separation into buds, wood and bark segments allowed for a precise characterization of the location of certain phenolic compounds and quantification using LC-MS/MS techniques. LC-MS/MS is an analytical technique known for its increased sensitivity and chromatographic precision. Among the findings, catechin emerged as the predominant flavan-3-ol in all Salix species, with the highest concentration in the buds of Salix viminalis (7.26 mg/g DM). Naringenin exhibited species-specific variations, with S. dasyclados and S. viminalis recording the highest levels. Salicylic acid concentrations peaked in S. dasyclados (5.38 mg/g DM) and S. daphnoides (4.43 mg/g DM), particularly within the bark. When evaluating other individual flavonoids and total polyphenol content (TPC), disparities between buds, bark, and wood became evident, with wood consistently displaying the lowest content. Notably, the higher concentration of polyphenolic compounds in willow bark can be attributed to its susceptibility to external threats and its role as a robust defense mechanism against pathogens and herbivores. This study underscores the significance of diverse willow species as a source of high-value phenolic compounds, distributed differentially across plant parts and species. This knowledge holds promise for their potential applications in the circular bioeconomy.

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Forskning Thu, 01 Feb 2024 17:38:46 +0100 d1ae1019-1d9a-4e58-800d-c6cb96754f4a
<![CDATA[Oplistning af forskningsspørgsmål og -emner relevant for klimatilpasning af landbruget]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=4e3af7fa-cf32-4a9a-9701-87eaf936a587&tx_pure_pure5%5BshowType%5D=pub&cHash=64ad2c417ad8888113899d09a0394f86 Olesen, J. E., Andersen, M. N., Greve, M. H., et al. Rådgivning Thu, 25 Apr 2024 17:38:46 +0200 4e3af7fa-cf32-4a9a-9701-87eaf936a587 <![CDATA[Metode til huldtilpasning af mink]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=02318065-2045-4f26-9381-8e39780169aa&tx_pure_pure5%5BshowType%5D=pub&cHash=9390c3ac7770e61b3dafb98769a5a949 Møller, S. H. Rådgivning Wed, 24 Apr 2024 17:38:46 +0200 02318065-2045-4f26-9381-8e39780169aa <![CDATA[Animal health, welfare and production problems in organic weaner pigs]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=2cd0c046-df5d-4af5-b846-79bcf05810cc&tx_pure_pure5%5BshowType%5D=pub&cHash=73198a1e0cae3b31d6f1f24af4efdce7 Leeb, C., Hegelund, L., Edwards, S., et al. This paper reviews the available information on the different health and animal welfare issues in organic pigs in relation to weaning. It addresses the most relevant health and welfare problems and reviews their potential hazards and associated risk factors. Regarding health, problems related to post weaning diarrhoea, cold stress, skin lesions, endoparasites and post weaning multisystemic wasting syndrome are described. Reasons for distress and frustration in weaned piglets are identified as mainly separation from the mother, a new environment, mixing and fear of humans. Finally, hazards and risk factors for health and welfare in organic weaners are related to animal characteristics, housing systems, feed/nutrition and management. Generally, it is concluded that diseases around weaning are multifactorial in nature, with several factors contributing simultaneously as stressors at the time of weaning. In order to solve problems around weaning, the complexity and the individuality of farm systems need to be taken into account.

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Forskning Wed, 01 Oct 2014 17:38:46 +0200 2cd0c046-df5d-4af5-b846-79bcf05810cc
<![CDATA[Description of organic pig production in Europe]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=6ed34998-7c71-4169-ba35-7d72822689be&tx_pure_pure5%5BshowType%5D=pub&cHash=2f88aa09bb9cdfe6312a8d4a03383bd9 Früh, B., Bochicchio, D., Edwards, S., et al. With the aim to identify health and welfare strategies in organic pig production, a description of the different organic production systems was realized in eight European countries (Austria, Denmark, France, Germany, Italy, Sweden, Switzerland and UK). This description was based on the following features: numbers of organic farms and organic pigs, market shares, housing and management characteristics, feeding characteristics, main health problems and relevant differences to the EU regulation existing at the time of the project. The results were primarily based on statistics, country-specific regulations as well as on expert and stakeholder interviews. Organic farming and organic pig production are rapidly developing in European countries. The European country with the highest number of organic pigs is Germany. Organic pig production represents aminor part of the whole pig production in all surveyed countries. All features that were analysed varied greatly between countries with the most striking one being the housing of pigs that can be completely outdoors on pasture for most UK farms and always indoors with an access to an outdoor run, during part of their life, for most farms of German speaking countries.

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Forskning Wed, 01 Oct 2014 17:38:46 +0200 6ed34998-7c71-4169-ba35-7d72822689be
<![CDATA[Radial versus femoral access in patients with acute coronary syndrome undergoing invasive management]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=87b6deb9-989d-4b28-8193-f6410e81497a&tx_pure_pure5%5BshowType%5D=pub&cHash=108aac8513e1b9910ed287746718ab5a Völz, S., Angerås, O., Koul, S., et al. Aims: In the Bivalirudin versus Heparin in ST-Segment and Non-ST-Segment Elevation Myocardial Infarction in Patients on Modern Antiplatelet Therapy in the Swedish Web System for Enhancement and Development of Evidence-based Care in Heart Disease Evaluated according to Recommended Therapies Registry Trial (VALIDATE-SWEDEHEART), bivalirudin was not superior to unfractionated heparin in patients with acute coronary syndrome undergoing invasive management. We assessed whether the access site had an impact on the primary endpoint of death, myocardial infarction or major bleeding at 180 days and whether it interacted with bivalirudin/unfractionated heparin. Methods and results: A total of 6006 patients with acute coronary syndrome planned for percutaneous coronary intervention were randomised to either bivalirudin or unfractionated heparin. Arterial access was left to the operator discretion. Overall, 90.5% of patients underwent transradial access and 9.5% transfemoral access. Baseline risk was higher in transfemoral access. The unadjusted hazard ratio for the primary outcome was lower with transradial access (hazard ratio 0.53, 95% confidence interval 0.43–0.67, p<0.001) and remained lower after multivariable adjustment (hazard ratio 0.56, 95% confidence interval 0.52–0.84, p<0.001). Transradial access was associated with lower risk of death (hazard ratio 0.41, 95% confidence interval 0.28–0.60, p<0.001) and major bleeding (hazard ratio 0.57, 95% confidence interval 0.44–0.75, p<0.001). There was no interaction between treatment with bivalirudin and access site for the primary endpoint (p=0.976) or major bleeding (p=0.801). Conclusions: Transradial access was associated with lower risk of death, myocardial infarction or major bleeding at 180 days. Bivalirudin was not associated with less bleeding, irrespective of access site.

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Forskning Sun, 01 Sep 2019 17:38:46 +0200 87b6deb9-989d-4b28-8193-f6410e81497a
<![CDATA[Undersøgelse af behov for kupering af lammehaler]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=8c06e5a6-24c8-4f0b-97f7-fc3e1f214516&tx_pure_pure5%5BshowType%5D=pub&cHash=c06aa8506c47ab2e07b548c43c02d069 Henriksen, B. I. F. Rådgivning Thu, 18 Apr 2024 17:38:46 +0200 8c06e5a6-24c8-4f0b-97f7-fc3e1f214516 <![CDATA[Obduktioner giver ny viden]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=c092668e-a7fb-4667-a5e3-0239a33434ec&tx_pure_pure5%5BshowType%5D=pub&cHash=2d97c8e7ecdb1412bb53079c705771dc Thomsen, P. T. Formidling Mon, 01 Apr 2024 17:38:46 +0200 c092668e-a7fb-4667-a5e3-0239a33434ec <![CDATA[Animals with various forms of abnormal behaviour differ in learning performance and use of enrichment]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=c2f7cfdc-47ee-4312-a474-3f82ee6c216d&tx_pure_pure5%5BshowType%5D=pub&cHash=d633d79ee40000f8ab52eb70782522db Malmkvist, J., Díez-León, M., Christensen, J. W. Abnormal behaviour has been related to differences in cognitive function and reduced animal welfare. However, these associations are understudied, and little is known about how various forms of abnormal behaviour affect learning performance, stress responses and use of enrichment. We tested the hypotheses that different forms of abnormal behaviour are (1) associated with various degrees of impairment of learning, (2) generally related to elevated stress responses including fearfulness, and (3) reduced during periodical access to running wheels using American mink (Neogale vison, synonym Neovison vison) as model species. Farm mink were screened into groups displaying no apparent abnormal behaviour (NONE, n=35), or abnormal behaviour as fur-chewing (FURCHEW, n=21), Stereotypic Behaviour (SB) i.e., pacing (PACERS, n=33), stationary SB (STATSB, n=22), licking SB (ORALSB, n=17), and combination of forms (MIXED, n=22). Learning performance was assessed in a two-choice visual discrimination test with three progressive stages: 94% passed the 1st (acquisition), 70% the 2nd (recall) and 42% the 3rd (reversal) stage. Mink from groups MIXED and PACERS passed more learning stages than ORALSB and NONE mink (MIXED 2.3a; PACERS: 2.1a; ORALSB 1.4b; NONE: 1.4b, F5,83=2.7, P=0.027), while the other groups did not differ significantly (STATSB: 1.9ab, FURCHEW: 2.0ab). Thus, the most locomotory active forms of abnormal behaviour appeared associated with enhanced learning. NONE mink spent more time in investigative sniffing (13 ±1.6 s) than did mink with abnormal behaviour (6 ±0.9 s) in a 30 s temperament test (F5,144=3.2, P=0.010). A large individual variation in faecal cortisol metabolite levels rendered this indicator insensitive to detect group differences. When given access to a running wheel, the groups differed in activity (F5,131=10.0, P<0.001): Revolutions per day, MIXED: 1929a, STATSB: 1445a, PACERS: 1435ab, ORALSB: 466bc, FURCHEW: 485c, and NONE: 344c. All forms of SB, except licking, were significantly reduced (P<0.001) during running wheel access. Thus, licking SB appears different from the other SBs. In conclusion, different forms of abnormal behaviour appear associated with different cognitive and motivational characteristics. Further, our results suggest a potential positive link between physical activity (even if it is stereotypic) and learning.

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Forskning Thu, 01 Feb 2024 17:38:46 +0100 c2f7cfdc-47ee-4312-a474-3f82ee6c216d
<![CDATA[Supplerende spørgsmål til vurdering af forhold, der kan påvirke minkproduktion]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=2fb63fe7-021c-4ef6-8869-7318bd328fab&tx_pure_pure5%5BshowType%5D=pub&cHash=ef526860f622f7954ab3195d4060b9fc Møller, S. H. Rådgivning Wed, 17 Apr 2024 17:38:46 +0200 2fb63fe7-021c-4ef6-8869-7318bd328fab <![CDATA[Kvalitativ foderrestriktion under opdræt af forældredyrshønniker: Virkningen af fiberrigt foder og grovfoder på dyrevelfærd]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=d93e4cf7-ca41-4358-b309-ba01e3db31d7&tx_pure_pure5%5BshowType%5D=pub&cHash=06259156d8c14fa8781565bb30eebf42 Riber, A. B., Thodberg, K., van der Heide, M. E., Wurtz, K. E. Rådgivning Fri, 12 Apr 2024 17:38:46 +0200 d93e4cf7-ca41-4358-b309-ba01e3db31d7 <![CDATA[Virkemidler til reduktion af klimagasser i landbruget - 2024]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=0112c262-cbc8-49d8-a0a7-97065a82a2f3&tx_pure_pure5%5BshowType%5D=pub&cHash=fcb9717b3742177a3c0a2b4972be685f Andersen, M. N., Manevski, K., Lærke, P. E., et al. Rådgivning Fri, 12 Apr 2024 17:38:46 +0200 0112c262-cbc8-49d8-a0a7-97065a82a2f3 <![CDATA[Short-term exposure of dairy cows to pyrrolizidine alkaloids from tansy ragwort (Jacobaea vulgaris Gaertn.)]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=63a1ebae-6113-4563-b0e7-1e19256863bf&tx_pure_pure5%5BshowType%5D=pub&cHash=c1d0e1f15be7d01d89d188a35d11be4b Knoop, K., Knappstein, K., Kaltner, F., et al. Forskning Sun, 01 Oct 2023 17:38:46 +0200 63a1ebae-6113-4563-b0e7-1e19256863bf <![CDATA[Energy balance estimated real-time from automated on-farm live weights is associated with udder health]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=2c72362c-45b2-485e-ab77-fd732830b583&tx_pure_pure5%5BshowType%5D=pub&cHash=f340c549598c624c8109e2be42069efc Thorup, V. M., Kjeldsen, A. M., Schmidt, J. M., Bossen, D. Several technologically advanced dairy herds weigh cows automatically, but live weight fluctuates mainly due to feed and water intake, and milking. This daily fluctuation has been the largest obstacle in extrapolating meaningful physiological information from short term live weight changes, and in using these as an automated management tool. Mastitis and somatic cell count (SCC ) are used as udder health indicators, the former has been associated with decreased energy balance. This study uses a standard function of body protein changes to separate live weight changes into protein and lipid changes, thereby enabling estimation of individual energy balance of cows from live weights alone. Energy balance was estimated from 7421 live weight time-series, of these 862 cows were treated for mastitis. SCC during the first 100 days in milk was calculated. Energy balance correlated negatively with both milk yield and SCC , thus low energy balance was associated with high yield and high SCC . Mixed model ANOVA showed that SCC was significantly affected by energy balance, mastitis treatment, ECM, parity and calving season. In conclusion, informative individual energy balance estimates can be obtained from automated live weights in commercial herds without measuring feed intake.

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Forskning Tue, 01 Jan 2013 17:38:46 +0100 2c72362c-45b2-485e-ab77-fd732830b583
<![CDATA[Influence of space availability on measures of fear in conventional broiler chickens]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=0cb4fb1f-882c-4b21-ab19-f4ab2b1b392d&tx_pure_pure5%5BshowType%5D=pub&cHash=2636fd72a607683975f9867f17ca986d Rasmussen, S. N., Yoder, H., Erasmus, M., Riber, A. B. Many of the fear tests used in the welfare assessments of broiler chickens assume that birds will withdraw from a given stimulus if they are fearful. However, fear test responses may also depend on the amount of space available in the broilers’ environment. As broiler chickens grow, the available space decreases, which, together with a decline in walking ability, may bias the results of fear tests. In the present study, we aimed to examine the relationship between space availability and measures of fear in broiler chickens. We hypothesized that broilers kept in pens with lower space availability would show reduced withdrawal in two movement-dependent fear tests, the stationary person test (SPT) and the novel object test (NOT), as space restrictions would limit the birds’ ability to move away. Fast-growing broilers (Ross 708) were housed at similar target stocking densities (34 kg/m2) until 27 days of age, after which an experimental intervention was introduced in which half of the pens were provided with additional space, reducing the target stocking density to 16 kg/m2. The fear tests were conducted when the birds were 21, 27 (before the change in space availability), 29, and 37 days old. Statistical analyses were performed in R using Generalized Additive Models. We found no effect of space availability on the measures of the SPT (P = 0.32). Space availability seemingly had a temporary effect on the measures of the NOT, as birds housed in the larger pens (16 kg/m2) showed increased withdrawal compared to the birds housed in the smaller pens (34 kg/m2) at 29 days of age (P = 0.04). However, no difference was found at 37 days of age (P = 0.63), and, therefore, we speculate whether the temporary effect at 29 days of age was due to the novelty of the environment rather than due to increase in space availability per se. We conclude that space availability had no effect on the outcome of the SPT and that it, overall, had no lasting effect on the outcome of the NOT. We speculate whether our findings might be explained by our chosen levels of stocking density for the smaller pens, as these may not have been sufficiently high to limit the birds’ ability to respond to the fear tests used, i.e. the birds, although space restricted, still had the option of being outside of proximity of the presented stimuli.

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Forskning Mon, 01 Apr 2024 17:38:46 +0200 0cb4fb1f-882c-4b21-ab19-f4ab2b1b392d
<![CDATA[Forskere ser et stort potentiale i overvågning af grisenes lyde]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=cd02a679-891c-4212-913c-1cb8260dc953&tx_pure_pure5%5BshowType%5D=pub&cHash=2507369fcb1e6c340d08df1883d5db3e Coutant, M. P. Formidling Mon, 04 Mar 2024 17:38:46 +0100 cd02a679-891c-4212-913c-1cb8260dc953 <![CDATA[Conflict behaviour in Icelandic horses during elite competition]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=fac0784a-58df-4a6f-a8bf-2d89ecb4913c&tx_pure_pure5%5BshowType%5D=pub&cHash=24b337c5909a59d7637f0c171dee5e77 Christensen, J. W., Jensen, D., König von Borstel, U. U. Sport horse welfare is currently under scrutiny. Among other issues, it has been pointed out that behavioural signs of discomfort are frequently overlooked during training and competitions. Previous studies reported a relatively high prevalence of these types of behaviour (e.g., tail swishing, mouth opening – typically jointly labelled ‘conflict behaviour’) in elite level dressage and show jumping warmblood horses. This study aimed to investigate the prevalence of conflict behaviour in Icelandic horses competing at elite level in breed-specific gait competitions. We used online video recordings from a competition in Iceland, including two different competitions (MD22, Fivegait F1: n = 25, and Loose-rein Tölt T2: n = 24 participating horses). The recordings were viewed at slow speed (x 0.25) enabling a detailed recording of the horses’ behavioural expressions. Mouth opening was the most frequently observed behaviour and occurred more in pace and tölt (Fivegait F1, P<0.001). In T2, mouth opening was more frequent in short-rein tölt than during loose-rein tölt (P<0.001). Sudden head movements, tail swishing and undesired gait changes also occurred, but less frequently. An elongated upper lip was observed in 12 of the 24 participating horses in T2, but only in short-rein tölt, suggesting that upper lip elongation is related to rein tension. We conclude that mouth movements (mouth opening and an elongated upper lip) are common behavioural expressions in Icelandic horses competing at elite level. Further studies are required to reveal the significance of these behaviours in terms of horse welfare.

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Forskning Thu, 01 Feb 2024 17:38:46 +0100 fac0784a-58df-4a6f-a8bf-2d89ecb4913c
<![CDATA[The effects of phenotyping and genotyping strategies, and the use of conventional or organic sires on genetic gain in an organic pig population]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=2e5d4590-280a-402b-9cb4-57f410c3d940&tx_pure_pure5%5BshowType%5D=pub&cHash=e50a8f1fe9ed42327914624dc3409ea7 Zaalberg, R. M., Clasen, J. B., Bovbjerg, H., Jensen, J., Villumsen, T. M., Chu, T. T. Optimizing organic pig breeding schemes depends on how to best allocate resources to phenotyping and genotyping. This study investigates how phenotyping and genotyping strategies affect genetic gain in a small organic pig population. We used stochastically simulated breeding schemes aimed at producing three-way crossbred finisher pigs. The simulated breeding schemes varied in the availability of phenotypes and genotypes for purebreds and crossbreds, the origin of the sire, and the genetic correlation between purebred and crossbred performance. For each simulated breeding scheme, genetic gain and rate of inbreeding were collected for up to 100 replicates. Phenotyping of crossbred individuals did not improve the genetic gain in the purebreds or the crossbreds. Genotyping purebred sows did improve genetic gain in both purebreds and crossbreds. Genetic gain and rate of inbreeding were maximized when internal sires were used, assuming strong GxE between organic and conventional production systems. Yet, breeding schemes that used internal sires had a larger variance in the genetic gain than those that used external sires. In conclusion, breeding schemes for organic pigs can be optimized by using internal sires and by genotyping the purebred parents. Yet, the rate of inbreeding and population size should be taken into careful consideration when developing an independent breeding program for a small (organic) population.

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Forskning Wed, 01 May 2024 17:38:46 +0200 2e5d4590-280a-402b-9cb4-57f410c3d940
<![CDATA[Palmitoleinsyre - nøglen til bedre termoregulering, øget metabolisk sundhed og bedre pattegriseoverlevelse?]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=c2081cc6-b062-4f25-abc7-1c801e40e5e8&tx_pure_pure5%5BshowType%5D=pub&cHash=e2e2b80c956b9196a25f2d5aed186798 Lærke, H. N. Formidling Thu, 04 Apr 2024 17:38:46 +0200 c2081cc6-b062-4f25-abc7-1c801e40e5e8 <![CDATA[Research note]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=1f54d5d6-48f1-42ab-b671-c3495a62d72c&tx_pure_pure5%5BshowType%5D=pub&cHash=07e47f05770fc0f0204d9c116670a5f4 Nyende, P. W., Woyengo, T. A. A study was conducted to evaluate standardized ileal digestibility (SID) of amino acids (AA) and N-corrected apparent metabolizable energy (AMEn) values of cold pressed flaxseed meal (CPFM) for broilers. One hundred and twenty broiler chicks were divided into 20 groups of 6 birds/group and fed 2 diets in a completely randomized design (10 groups/diet) from 14 to 21 d of age. The diets were cornstarch-based containing CPFM or conventional soybean meal (SBM; reference feedstuff) as the sole protein source. A N-free diet fed in another study conducted in the same facility and at the same time that the current study was conducted was used to estimate basal endogenous AA losses, and to calculate gross energy retention by difference method. The CPFM had greater neutral detergent fiber and ether extract contents (21.40 vs. 8.18% and 20.4 vs. 2.47% as is, respectively), but lower CP (20.47 vs. 48.28% as is) than SBM. The SID values of all indispensable AA (except for Leu, Phe and Trp) for CPFM were lower (P < 0.05) than those for SBM. The apparent retention of gross energy (65.95 vs. 44.24%) and N (55.53 vs. 9.79%), and AMEn (2,699 vs. 2,491 kcal/kg) for CPFM were lower (P < 0.05) than those for SBM. In conclusion, CPFM can serve as alternative oilseed co-product feedstuff for poultry. However, the CPFM has lower SID of AA and AMEn values than SBM likely due to the greater fiber content in the former than in the latter.

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Forskning Mon, 01 Apr 2024 17:38:46 +0200 1f54d5d6-48f1-42ab-b671-c3495a62d72c
<![CDATA[Gas exchange, rumen hydrogen sinks, and nutrient digestibility and metabolism in lactating dairy cows fed 3-nitrooxypropanol and cracked rapeseed]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=999f0e1b-c6c7-440a-b45f-ec7e75781442&tx_pure_pure5%5BshowType%5D=pub&cHash=8724382fca0097a96a98c3083b5329d4 Kjeldsen, M. H., Weisbjerg, M. R., Larsen, M., et al. Forskning Mon, 01 Apr 2024 17:38:46 +0200 999f0e1b-c6c7-440a-b45f-ec7e75781442 <![CDATA[Water deprivation in poultry in connection with transport to slaughter]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=e9f59886-6387-4a4e-87ea-d5841e58db6c&tx_pure_pure5%5BshowType%5D=pub&cHash=a65622195e193cbc84f23eb6256a4a74 Wurtz, K. E., Herskin, M. S., Riber, A. B. Poultry are deprived of water when transported to slaughter, beginning shortly prior to catching of the first bird and lasting through catching and loading, the journey on the vehicle, time spent in lairage, and up until time of death. Our aim was to review existing knowledge on variables which may be useful in determining the length of time that poultry may go without water in connection with transport before their welfare begins to deteriorate. During transport, it is likely that birds experience a motivation to drink, which may transition into the negative emotional state of thirst if water is unavailable. Determining when drinking motivation reaches a threshold where welfare is negatively impacted is challenging. In the absence of water, birds may over time experience dehydration which may be detected through physiological indicators as their body attempts to maintain homeostasis. In poultry, plasma osmolality, arginine vasotocin, and chloride have been suggested as being most suitable for assessing dehydration resulting from periods of water deprivation that correspond with typical transport durations, due to their particular sensitivity during this period. While initial dehydration may not be associated with negative emotional states, it is likely that it eventually leads to discomfort, but additional behavioral and motivational studies are necessary to infer when this begins. Impacts of thermal conditions, genetics, and the condition of the individual bird on the development of a dehydrated state were also assessed, though more information is needed to fully understand these interactions. With the available literature, this review concludes that total transport (i.e., from the initial deprivation from water until time of slaughter) durations of longer than 6 h are likely associated with measurable physiological indicators of dehydration and may potentially be associated with negative emotional states, although more research is needed to clarify this. Current available knowledge and assessment tools are not sufficient to detect the degradation of welfare derived from thirst itself, which should be further examined to protect poultry welfare during transport.

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Forskning Wed, 01 May 2024 17:38:46 +0200 e9f59886-6387-4a4e-87ea-d5841e58db6c
<![CDATA[Dietary type (carnivore, herbivore and omnivore) and animal species modulate the nutritional metabolome of terrestrial species.]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=f55f4042-827a-4d35-8fed-0ca1e7477c7a&tx_pure_pure5%5BshowType%5D=pub&cHash=be357f04be74d1e05247a1e3e37f2935 Llobat, L., Soriano, P., Bordignon, F., de Evan, T., Larsen, T., Marín-García, P. J. Ecometabolomics could be implemented as a powerful tool in molecular ecology studies, but it is necessary to know the baseline of certain metabolites and understand how different traits could affect the metabolome of the animals. Therefore, the main objective of this study was to provide values for the nutritional metabolome profile of different diet groups and animal species, as well as to study the differences in the metabolomic profile due to the effect of diet type and species. To achieve this goal, blood samples were taken from healthy animals (n = 43) of different species: lion (Panthera leo), jaguar (Panthera onca), chimpanzee (Pan troglodytes), bison (Bison bison), gazelle (Gazella cuvieri) and fallow deer (Dama dama), and with different types of diet (carnivore, herbivore and omnivore). Each blood sample was analysed to determine nutritional metabolites. The main results this study provides are the nutritional metabolic profile of these animals based on the type of diet and the animal species. A significant effect of the dietary type was found on nutritional metabolite levels, with those metabolites related to protein metabolism (total protein and creatine) being higher in carnivores. There is also an effect of the species on nutritional metabolites, observing a metabolome differentiation between lion and jaguar. In the case of herbivores, bison showed higher levels of uric acid and cholesterol, and lower urea levels than gazelle and fallow deer. More molecular ecology studies are needed to further the knowledge of the metabolism of these animals.

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Forskning Sat, 01 Jun 2024 17:38:46 +0200 f55f4042-827a-4d35-8fed-0ca1e7477c7a
<![CDATA[Assessing cellular agriculture potential: Population homogeneity and gene expression in cultured bovine mammary epithelial cells]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=b7f57540-dde5-40bb-9733-7bf3633ce596&tx_pure_pure5%5BshowType%5D=pub&cHash=0d6e310395954c723e406a8be20abdb6 Sattari, Z., Rasmussen, M. K., Poulsen, N. A., et al. Formidling Sat, 01 Jun 2024 17:38:46 +0200 b7f57540-dde5-40bb-9733-7bf3633ce596 <![CDATA[Et historisk Europæisk partnerskab styrker dansk husdyrsundhed og velfærd]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=5075e0ee-9f22-4ff4-988e-c69ec19a56e2&tx_pure_pure5%5BshowType%5D=pub&cHash=b4575fed3aec0c1c16388ae469c0d347 Lærke, H. N. Formidling Tue, 19 Mar 2024 17:38:46 +0100 5075e0ee-9f22-4ff4-988e-c69ec19a56e2 <![CDATA[Øget indhold af fedt og E-vitamin i foderet kan forbedre kalves sundhed]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=ef89f87a-3b68-4a80-a53e-f05d9966b874&tx_pure_pure5%5BshowType%5D=pub&cHash=bca660a0e4fd7820db85edfa2cc56967 Lærke, H. N. Formidling Mon, 04 Mar 2024 17:38:46 +0100 ef89f87a-3b68-4a80-a53e-f05d9966b874 <![CDATA[Korrekt WelFur-Mink-vurdering af delvis fravænning af store kuld ved 42 dage]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=ef5a0c45-a5a9-456b-98a7-c7dcebeab98f&tx_pure_pure5%5BshowType%5D=pub&cHash=47b38d2739e3db71fdd0587b66994a15 Møller, S. H., Malmkvist, J., Henriksen, B. I. F. del af hvalpene anderledes end normal fravænning af alle hvalpene i et kuld. Det første af to års forsøg med delvis fravænning, gennemført som beskrevet i Branchekoden, viste, at både tæver og hvalpe reagerede kortvarigt på fravænningen ved 42 dage. Tæven og hvalpene fra delvist fravænnede kuld, reagerede også ved den endelige fravænning ved 56 dage. Langtidseffekterne var til fordel for delvis fravænning i form af flere nysgerrige, færre frygtsomme og færre pelsgnav. Samlet set er der dermed grundlag for en anden vurdering af delvis fravænning, end den der svarer til fuld fravænning af hele kuldet ved 42 dage.]]> Forskning Sun, 01 Mar 2020 17:38:46 +0100 ef5a0c45-a5a9-456b-98a7-c7dcebeab98f <![CDATA[Huldtilpasning uden velfærdsproblemer i vinterperioden]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=6850ffbc-ef7c-4fd4-92ff-232bf36a08a9&tx_pure_pure5%5BshowType%5D=pub&cHash=cf8f5a4ca024af649e5aedbe9198e911 Henriksen, B. I. F., Møller, S. H. Forskning Sun, 01 Mar 2020 17:38:46 +0100 6850ffbc-ef7c-4fd4-92ff-232bf36a08a9 <![CDATA[Behaviour of cull sows during transport to slaughter – Effects of journey duration, a stationary period and temperature]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=9df62b7f-9c96-4624-846c-7c445da47881&tx_pure_pure5%5BshowType%5D=pub&cHash=e8847b855e80a48db154876f264be707 Kobek-Kjeldager, C., Jensen, L. D., Foldager, L., et al. Until recently, the pre-slaughter logistic chain of cull sows had received limited study, and their behaviour during transport remains understudied. Previously, an observational study of journeys up to 8 h in Denmark showed that the clinical condition of sows had deteriorated from departure until arrival at the slaughterhouse. The suggested main risk factors for this were journey duration, in-vehicle temperature and stationary periods, often in interaction. To disentangle these risk factors, we performed a 3 × 2 factorial study simulating commercial conditions of varying journey durations (4 h, 6 h, 8 h) and the presence of a stationary period of 30–50 min after 1–4 h of driving (long stop: yes/no). In 28 vehicle loads of sows from six herds, behaviour (posture and aggression) and in-vehicle temperature were recorded in the rear compartment holding 11–12 sows during transport to a Danish slaughterhouse. Unexpectedly, the sows were generally standing during transport (median 89–92% standing sows per hour). More sows were standing in the initial hours compared to later. Fewer sows were standing when in-vehicle temperature was higher and with higher temperature standard deviation per hour. We found that fewer sows were standing during the long stop when the latency until the long stop was longer. There was variation in the frequency of aggression among sows (median 2–3, range: 0–155 events per sow), but no differences were detected in the rate of aggression as an effect of time since departure, the presence of a long stop, or in-vehicle temperature. The frequency of aggression received per sow positively correlated with number of scratches on the front of the sow (r = 0.24). Comparing the present results with the scientific literature on finisher pigs, cull sows seem to differ in their tendency to remain standing and show aggressive behaviour throughout journeys to the slaughterhouse. We discuss possible explanations including the pre-transport clinical condition of cull sows, their sensitivity to heat stress and mixing of unfamiliar animals in a confined space as well as the experimental design choice of observing sows in the rear compartment of the vehicle. In conclusion, contrary to expectations, sows were generally standing during transport, and aggression was found throughout the journeys. The higher proportion of sows lying down during a long stop with longer time until the stop may suggest fatigue. These initial findings on the behaviour of cull sows during transport suggest challenges to their welfare.

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Forskning Thu, 01 Feb 2024 17:38:46 +0100 9df62b7f-9c96-4624-846c-7c445da47881
<![CDATA[Identification of fibrocyte-like cells in biopsies from equine experimental wounds]]> https://anivet.au.dk/aktuelt/publikationer?tx_pure_pure5%5Baction%5D=single&tx_pure_pure5%5Bcontroller%5D=Publications&tx_pure_pure5%5Bid%5D=00237d68-9e89-41b0-a19b-c31662fb0ec0&tx_pure_pure5%5BshowType%5D=pub&cHash=03b325fdd66a0ae0b5ac95e6beca957c Bundgaard, L., Jensen, H. E., Aasted, B., Sørensen, M.A., Jacobsen, S. Forskning Mon, 01 May 2017 17:38:46 +0200 00237d68-9e89-41b0-a19b-c31662fb0ec0