Diet choice by dairy cows. 2. Selection for metabolizable protein or for ruminally degradable proteins?

Diet choice, expressed as grams of high protein feed selected per kilogram of intake, was measured for lactating cows with ad libitum access to two feeds. First, cows were given a choice between a low protein feed and a high protein feed for 9 wk while feeds were alternated between feeders. The prop...

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Veröffentlicht in:	Journal of dairy science 1998-10, Vol.81 (10)
Hauptverfasser:	Tolkamp, B.J. (Scottish Agriculture College, Edinburgh, UK.), Kyriazakis, I, Oldham, J.D, Lewis, M, Dewhurst, R.J, Newbold, J.R
Format:	Artikel
Sprache:	eng
Schlagworte:	ALIMENTACION AD LIBITUM ALIMENTATION A SATIETE DAIRY COWS DIET DIETA FEED INTAKE FEEDING PREFERENCES INGESTION DE PIENSOS LACTACION LACTATION LACTATION STAGE MILK YIELD NUTRITIVE RATIO NUTRITIVE VALUE PREFERENCE ALIMENTAIRE PREFERENCIAS ALIMENTARIAS PRISE ALIMENTAIRE (ANIMAUX) PROTEINAS PROTEINE PROTEINS REGIME ALIMENTAIRE RENDEMENT LAITIER RENDIMIENTO LECHERO UNRESTRICTED FEEDING UREA UREE VACAS LECHERAS VACHE LAITIERE VALEUR NUTRITIVE VALOR NUTRITIVO
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