effects of ractopamine-hydrogen chloride (Optaflexx) on performance, carcass characteristics, and meat quality of finishing feedlot heifers

Two experiments were conducted at the Kansas State University Beef Cattle Research Center to determine the effects of ractopamine-HCl (Optaflexx) on growth performance, carcass characteristics, and meat quality of finishing feedlot heifers. In Exp. 1, heifers implanted with Revalor-H (n = 302, initi...

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Veröffentlicht in:	Journal of animal science 2008-04, Vol.86 (4), p.902-908
Hauptverfasser:	Quinn, M.J, Reinhardt, C.D, Loe, E.R, Depenbusch, B.E, Corrigan, M.E, May, M.L, Drouillard, J.S
Format:	Artikel
Sprache:	eng
Schlagworte:	Adrenergic beta-Agonists - pharmacology Animal Feed animal growth Animal Nutritional Physiological Phenomena Animal productions Animals beef cows beef quality beta-adrenergic agonists Biological and medical sciences body composition Body Composition - drug effects body weight carcass characteristics carcass weight Cattle - growth & development color cooking loss dosage dressing percentage dry matter intake feed additives feed conversion feed intake Female Food industries Fundamental and applied biological sciences. Psychology heifers liveweight gain marbling Meat - standards Meat and meat product industries meat grades meat tenderness Muscle, Skeletal - drug effects Muscle, Skeletal - growth & development Phenethylamines - pharmacology ractopamine-HCl Terrestrial animal productions Time Factors Vertebrates Weight Gain
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