Tolkamp BJ, Kyriazakis I
, Friggens N, Oldham JD, Lewis M, Veerkamp RF et al.
Diet choice in dairy cows 1. I Selection for protein content during the first half of lactation. J. Dairy Sci. 80, Suppl. 1. 1997. s. 438-438
Tolkamp BJ, Kyriazakis I
, Friggens N, Oldham JD, Lewis M, Veerkamp RF et al.
Diet choice in dairy cows 2. I Selection for rumen degradable or for metabolisable protein? J. Dairy Sci. 80, suppl. 1. 1997. s. 439-439