Influence of Heat Stress on Distribution of Nitrogen in Milk

Susumu MUROYA, Fuminori TERADA, Shigeru SHIOYA
1997 Nihon Chikusan Gakkaiho  
A preliminary experiment to establish a method for maintaining the protein content of milk high in summer was carried out by examining the influence of heat stress on the nitrogen content in true protein, casein, whey proteins, and urea in cow's milk. Four dairy cows were kept protein-N but had no effect on whey-N and significantly (P<0.05) increased the urea-N content compared to 40% RH. Results of this experiment suggest that heat stress and high humidity conditions have negative effect on
more » ... production of milk true proteins and increases urea-N content in milk.
doi:10.2508/chikusan.68.297 fatcat:rag7ufubrfdhlbo53v4g5keri4