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Fernando Diaz

Methionine is one of the most limiting amino acids in lactating dairy cow diets. Methionine hydroxy analogues as 2-hydroxy-4-(methylthio)butanoate are synthetic amino acids in which the amino group has been replaced with a hydroxyl group in order to protect methionine from ruminal degradation. They are normally fed to improve milk and milk protein production of dairy cows. In addition, a recent meta-analysis concluded that supplementation of methionine hydroxy analogues can increase milk fat yield.

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