DAY-TO-DAY VARIATIONS IN FAT PERCENT OF COW'S MILK
- 1 June 1990
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Animal Science
- Vol. 70 (2) , 731-734
- https://doi.org/10.4141/cjas90-090
Abstract
Large day-to-day variations in milk fat, particularly for the morning milkings, were observed in 36 Holstein cows. Changes in percent fat were gradual and produced wavelike patterns in a number of instances. Supplemental feeding of long hay had no effect on acetate/propionate ratio in rumen fluid, daily milk yield or weighted milk fat percentage. Key words: Dairy cows, milk, fat depression, hayKeywords
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