A dose-response evaluation of rumen-protected niacin in thermoneutral or heat-stressed lactating Holstein cows

Twenty-four multiparous high-producing dairy cows (40.0±1.4kg/d) were used in a factorial design to evaluate effects of 2 environments [thermoneutral (TN) and heat stress (HS)] and a dose range of dietary rumen-protected niacin (RPN; 0, 4, 8, or 12g/d) on body temperature, sweating rate, feed intake...

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Veröffentlicht in:	Journal of dairy science 2014-08, Vol.97 (8), p.5023-5034
Hauptverfasser:	Rungruang, S., Collier, J.L., Rhoads, R.P., Baumgard, L.H., de Veth, M.J., Collier, R.J.
Format:	Artikel
Sprache:	eng
Schlagworte:	Animals Arizona Body Temperature Regulation - drug effects Cattle Diet - veterinary Dietary Fats - analysis Dietary Supplements dose Dose-Response Relationship, Drug Female heat stress Heat-Shock Response Humidity lactating dairy cow Lactation Linear Models Milk - chemistry Milk - secretion Milk Proteins - analysis niacin Niacin - blood Niacin - pharmacology Respiratory Rate - drug effects Rumen - drug effects Rumen - metabolism
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