Responses in milk constituents to intravascular administration of two mixtures of amino acids to dairy cows.

@article{Metcalf1996ResponsesIM,
  title={Responses in milk constituents to intravascular administration of two mixtures of amino acids to dairy cows.},
  author={Julie A. Metcalf and Les A. Crompton and D. WRAY-CAHEN and Michael A Lomax and J D Sutton and David E Beever and J C Macrae and Brian J. Bequette and F R Backwell and Gerald E. Lobley},
  journal={Journal of dairy science},
  year={1996},
  volume={79 8},
  pages={1425-9}
}
Four Holstein-Friesian cows were used to investigate the effects of intravascular infusions of AA mixtures on milk constituents. Cows were in wk 11 to 28 of lactation and were fed a basal concentrate (142 g of CP/kg of DM) and grass silage (149 g of CP/kg of DM) in a 60:40 ratio (percentage of DM). Cows were fed hourly, and feed intake was fixed at 95% of ad libitum intake for each experimental period. Each cow received a 4-d jugular saline infusion, followed by a 5-d jugular infusion of a… CONTINUE READING