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Effect of fat supplementation and protein source on performance of dairy cows in hot environmental temperatures


, : Effect of fat supplementation and protein source on performance of dairy cows in hot environmental temperatures. Journal of Dairy Science 75(Supplement 1): 175

24 Holstein cows (103 days in milk) were assigned to 4 treatments in a 2 x 2 factorial design. Factors were: (1) protein source: (cottonseed meal, CP, vs. fish, blood and cottonseed meals, FB); (2) fat level: (medium fat, MF, vs. high, HF). All diets had 8% whole cottonseed and HF diets were supplemented with 2.5% prilled fat. Cows were given a total mixed ration containing 18% CP for 63 days in the hot summer, following a 14-day covariate period.

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Chan S.C.; Huber J.T.; W.Z.; Chen K.H.; Simas J., 1992: Effect of fat supplementation and protein source on performance of dairy cows in hot environment temperatures. Journal of Dairy Science 75(SUPPL 1): 175

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