Effects of ractopamine and protein source on growth performance and carcass characteristics of feedlot heifers

An experiment was conducted to determine the relationship between feeding ractopamine and different amounts of MP on growth and carcass characteristics of feedlot heifers. Seventy-two crossbred heifers (475 kg of initial BW) were fed individually a diet based on steam-flaked corn for ad libitum inta...

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Veröffentlicht in:	Journal of animal science 2006-10, Vol.84 (10), p.2795-2800
Hauptverfasser:	Walker, D.K, Titgemeyer, E.C, Drouillard, J.S, Loe, E.R, Depenbusch, B.E, Webb, A.S
Format:	Artikel
Sprache:	eng
Schlagworte:	Adrenergic beta-Agonists - administration & dosage Adrenergic beta-Agonists - pharmacology amino nitrogen Animal Feed - analysis Animal productions Animals beef cattle Biological and medical sciences blood chemistry blood glucose Blood Glucose - analysis body weight carcass characteristics carcass quality carcass weight carcass yield Cattle - growth & development Cattle - physiology cattle feeding dietary protein Dietary Proteins - administration & dosage Dietary Proteins - classification Dietary Proteins - metabolism Dietary Supplements digestible protein feed conversion feed intake feed supplements Female Food industries Fundamental and applied biological sciences. Psychology heifers ingredients Lactic Acid - blood liveweight gain marbling Meat and meat product industries Phenethylamines - administration & dosage Phenethylamines - pharmacology protein requirement protein sources ractopamine Random Allocation soybean meal Terrestrial animal productions urea Urea - blood Vertebrates
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