Supplementing feedlot steers and heifers with Zilmax increases proportions of strip loin, chuck clod, and top sirloin steaks exceeding Warner-Bratzler shear force thresholds, whereas aging moderates this effect

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dc.contributor.author Claus, H.C.
dc.contributor.author Brooks, J.C.
dc.contributor.author Shook, J.
dc.contributor.author Hilton, G.G.
dc.contributor.author Lawrence, T.E.
dc.contributor.author Mehaffey, J.M.
dc.contributor.author Johnson, B.J.
dc.contributor.author Allen, Dell M.
dc.contributor.author Streeter, M.N.
dc.contributor.author Nichols, W.T.
dc.contributor.author Hutcheson, J.P.
dc.contributor.author Yates, D.A.
dc.contributor.author Miller, M.F.
dc.contributor.author Hunt, Melvin C.
dc.contributor.author Killefer, J.
dc.contributor.author Dikeman, Michael E.
dc.contributor.author Murray, Leigh W.
dc.date.accessioned 2011-03-30T16:49:16Z
dc.date.available 2011-03-30T16:49:16Z
dc.date.issued 2011-03-30
dc.identifier.uri http://hdl.handle.net/2097/8126
dc.description.abstract Ractopamine hydrochloride (Elanco, Greenfield, IN) and Zilmax (zilpaterol hydrochloride; Intervet/Schering-Plough, Millsboro, DE) are β-adrenergic agonists approved in the United States and several other countries to increase growth rate, improve efficiency of feed utilization, and increase carcass meat yield. Zilmax has been shown to improve feed efficiency by 26% and increase hot carcass weight, longissimus muscle area, and meat yield. However, a few studies have shown that Zilmax significantly increased Warner-Bratzler shear force values (decreased tenderness). The objectives of our research were to determine the effects of supplementing feedlot diets of steers and heifers with Zilmax for 0, 20, 30, or 40 days before harvest and the subsequent effects of 7, 14, and 21 days of aging on tenderness of steer and heifer Longissimus lumborum (from strip loins) and heifer Triceps brachii (from chuck clods) and Gluteus medius (from top sirloin butts) muscles. en_US
dc.publisher Kansas State University. Agricultural Experiment Station and Cooperative Extension Service en_US
dc.relation.isPartOf Cattlemen’s Day, 2010 en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 10-170-S en_US
dc.relation.isPartOf Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 1029 en_US
dc.relation.isPartOf Beef Cattle Research, 2010 is known as Cattlemen’s Day, 2010 en_US
dc.subject Beef en_US
dc.subject Steers en_US
dc.subject Heifers en_US
dc.subject Zilmax en_US
dc.subject Warner-Bratzler shear force en_US
dc.title Supplementing feedlot steers and heifers with Zilmax increases proportions of strip loin, chuck clod, and top sirloin steaks exceeding Warner-Bratzler shear force thresholds, whereas aging moderates this effect en_US
dc.type Conference paper en_US
dc.date.published 2010 en_US
dc.citation.epage 123 en_US
dc.citation.spage 118 en_US
dc.description.conference Cattlemen's Day, 2010, Kansas State University, Manhattan, KS, March 5, 2010 en_US
dc.contributor.authoreid mdikeman en_US
dc.contributor.authoreid lmurray en_US


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