Rumen-protected lysine, methionine, and histidine increase milk protein yield in dairy cows fed a metabolizable protein-deficient diet

The objective of this experiment was to evaluate the effect of supplementing a metabolizable protein (MP)-deficient diet with rumen-protected (RP) Lys, Met, and specifically His on dairy cow performance. The experiment was conducted for 12wk with 48Holstein cows. Following a 2-wk covariate period, c...

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Veröffentlicht in:	Journal of dairy science 2012-10, Vol.95 (10), p.6042-6056
Hauptverfasser:	Lee, C., Hristov, A.N., Cassidy, T.W., Heyler, K.S., Lapierre, H., Varga, G.A., de Veth, M.J., Patton, R.A., Parys, C.
Format:	Artikel
Sprache:	eng
Schlagworte:	alfalfa Animal Nutritional Physiological Phenomena - drug effects Animal Nutritional Physiological Phenomena - physiology Animal productions Animals Biological and medical sciences Cattle Cattle Diseases - metabolism Cattle Diseases - physiopathology corn corn silage crude protein dairy cow dairy cows diet Diet - veterinary Dietary Proteins - pharmacology Dietary Supplements digestibility dry matter intake essential amino acids excretion Feeding. Feeding behavior Female Fundamental and applied biological sciences. Psychology haylage histidine Histidine - metabolism Histidine - pharmacology Histidine - physiology industry Lactation - drug effects Lactation - metabolism Lactation - physiology lysine Lysine - metabolism Lysine - pharmacology Lysine - physiology methionine Methionine - metabolism Methionine - pharmacology Methionine - physiology milk Milk - chemistry milk fat milk protein yield Milk Proteins - analysis nutrients Protein Deficiency - metabolism Protein Deficiency - physiopathology Protein Deficiency - veterinary Rumen - metabolism Rumen - physiology rumen-protected histidine rumen-protected lysine rumen-protected methionine secretion Terrestrial animal productions true protein urea nitrogen Vertebrates Vertebrates: anatomy and physiology, studies on body, several organs or systems
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