The main subject area is beef production based on dairy bull calves. The dairy bull calves used for beef production, e.g., rosé veal calves or young bulls are raised and fed in various types of production systems. In some fattening units, a total mixed ration is fed. In some cases, the feed bunk space is too short to allow for an optimized feed intake for the group of calves in the pen, e.g., 25-30 calves per pen. This might lead to lower feed intake and growth, especially for some weaker calves in the group, which again might lead to a larger variation in growth rate and thus live weight within a group.
The objective is to investigate the influence of feed bunk space on animal performance. An experimental trial has been performed at a private farm. Causes of variation studied were; 1) age of calves, 2) feed bunk area, and 3) feed rations composition. Feed intake was recorded per pen and LW for each calf every 3 weeks. The data recording also included video data and animal sensor data to estimate feed intake and feeding behavior (feed bunker visits, rumination etc). A comprehensive literature review must be included.
The long-term perspective is to minimize feeding-related stress and variation in feed intake on performance as well as on rumen function and animal health. Thus, the included literature review should also cover these aspects.
April or August 2024. To be decided in agreement with the supervisor.
Department of Animal- and Veterinary Sciences, AU Campus Viborg, DK-8830 Tjele, but will include cooperation with SEGES.
30 ECTS: Theoretical thesis based on literature studies and/or analysis of issued and edited data sets.
Most data analyses have been performed but extra analyses can be made.
