Effects of daily porcine somatotropin administration on the lysine requirement of growing pigs

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dc.contributor.author Fitzner, G.E.
dc.contributor.author Weeden, T.L.
dc.contributor.author Friesen, K.G.
dc.contributor.author Hines, Robert H.
dc.contributor.author Nelssen, Jim L.
dc.contributor.author Goodband, Robert D.
dc.contributor.author Kropf, Donald H.
dc.contributor.author Hancock, Joe D.
dc.date.accessioned 2010-04-08T19:47:56Z
dc.date.available 2010-04-08T19:47:56Z
dc.date.issued 2010-04-08T19:47:56Z
dc.identifier.uri http://hdl.handle.net/2097/3538
dc.description.abstract One-hundred twenty crossbred barrows initially weighing 68.7 lb were used to determine the lysine requirement of growing pigs injected with 5 mg/d porcine somatotropin (PST) during a 5-wk growth trial. Pigs received one of six levels of dietary lysine (.7, 1.1, 1.5, 1.9,2.3, or 2.7%) and were injected daily with either 5 mg pST or placebo. During the 5 wk trial, pST-injected pigs had increased average daily gain (ADG), decreased average daily feed intake (ADFI), and improved feed conversion (F/G) compared with placebo-injected pigs. With increasing dietary lysine, ADFI of pigs injected with both pST and placebo was reduced. Pigs injected with pST had improved ADG as dietary lysine increased to 1.5% and improved F/G as dietary lysine increased to 1.9 %. Dietary lysine had no effect on ADG or F/G of placebo-injected pigs. Pigs injected with pST had improved average backfat, tenth rib fat depth, and longissimus area compared to placebo-injected pigs. Tenth rib fat depth of both placebo- and pST-injected pigs was reduced as dietary lysine increased. Longissimus area of pST-injected pigs improved as dietary lysine increased to 1.5%. The improvements in ADG, ADFI, F/G, and longissimus area of pST-injected pigs indicate that the dietary lysine requirement of growing pigs injected with 5 mg/d pST is 1.5 to 1.9%. en_US
dc.publisher Kansas State University. Agricultural Experiment Station and Cooperative Extension Service en_US
dc.relation.isPartOf Swine day, 1991 en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 92-193-S en_US
dc.relation.isPartOf Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 641 en_US
dc.subject Swine en_US
dc.subject GF en_US
dc.subject Repartition en_US
dc.subject Performance en_US
dc.subject Carcass en_US
dc.subject Lysine en_US
dc.title Effects of daily porcine somatotropin administration on the lysine requirement of growing pigs en_US
dc.type Conference paper en_US
dc.date.published 1991 en_US
dc.citation.epage 104 en_US
dc.citation.spage 101 en_US
dc.description.conference Swine Day, Manhattan, KS, November 21, 1991 en_US
dc.contributor.authoreid dkropf en_US
dc.contributor.authoreid jnelssen en_US
dc.contributor.authoreid goodband en_US
dc.contributor.authoreid jhancock en_US


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