Milk fatty acid profile in cows fed red clover-or alfalfa-silage based diets differing in rumen-degradable protein supply
Polyphenol oxidase in red clover (RC) silage reduces lipolysis and consequently protects its
constituent fatty acids (FA) against biohydrogenation by ruminal microorganisms. Fatty acid
biohydrogenation could be further inhibited by reducing the nitrogen (N) supply to ruminal
bacteria. To compare the effects of RC and alfalfa (AL) silage fed in diets differing in rumen-
degradable protein supply on the transfer efficiency of polyunsaturated FA from diet to milk,
and on the resulting FA profile of milk fat, 8 multiparous Holstein dairy cows (72±17 days in …
constituent fatty acids (FA) against biohydrogenation by ruminal microorganisms. Fatty acid
biohydrogenation could be further inhibited by reducing the nitrogen (N) supply to ruminal
bacteria. To compare the effects of RC and alfalfa (AL) silage fed in diets differing in rumen-
degradable protein supply on the transfer efficiency of polyunsaturated FA from diet to milk,
and on the resulting FA profile of milk fat, 8 multiparous Holstein dairy cows (72±17 days in …
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