Effects of daily administration of porcine somatotropin on performance of growing pigs (55 to 130 lb)

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dc.contributor.author Fitzner, G.E.
dc.contributor.author Weeden, T.L.
dc.contributor.author Healy, B.J.
dc.contributor.author Schricker, B.R.
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 2010-04-15T21:39:15Z
dc.date.available 2010-04-15T21:39:15Z
dc.date.issued 2010-04-15T21:39:15Z
dc.identifier.uri http://hdl.handle.net/2097/3604
dc.description.abstract Sixty crossbred barrows initially weighing 55.7 lb were used to evaluate six experimental treatments during a 5-wk growth trial. Pigs received one of three levels of dietary lysine (1.0, 1.5, or 2.0%) and were injected daily with either 3 mg porcine somatotropin (pST) or placebo. During the first 2 wk of the trial, there was no effect from either pST injection or increasing level of dietary lysine on average daily gain (ADG) or average daily feed intake (ADFI). Also, there was no effect of pST injections on feed conversion (F/G), but those pigs fed diets containing higher levels of lysine showed improved F/G. During the entire 5-wk period, pigs administered pST gained faster than placebo-injected pigs. During the 5-wk trial, there was a nonsignificant reduction in ADFI for pigs injected with pST compared with those receiving placebo injections. Increasing the level of dietary lysine also resulted in a nonsignificant reduction in ADFI. Pigs injected daily with pST showed a 10% improvement in (F/G) when compared with placebo-injected pigs. Increasing the dietary lysine level from 1.0 to 2.0% resulted in a 10% improvement in F/G for both pST- and placebo-injected pigs. Tenth rib fat depth and average backfat thickness were both reduced in pST-treated pigs compared with placebo-injected pigs. en_US
dc.publisher Kansas State University. Agricultural Experiment Station and Cooperative Extension Service en_US
dc.relation.isPartOf Swine day, 1990 en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 91-189-S en_US
dc.relation.isPartOf Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 610 en_US
dc.subject Swine en_US
dc.subject GF en_US
dc.subject Repartition en_US
dc.subject Performance en_US
dc.subject Lysine en_US
dc.title Effects of daily administration of porcine somatotropin on performance of growing pigs (55 to 130 lb) en_US
dc.type Conference paper en_US
dc.date.published 1990 en_US
dc.citation.epage 85 en_US
dc.citation.spage 83 en_US
dc.description.conference Swine Day, Manhattan, KS, November 15, 1990 en_US
dc.contributor.authoreid jnelssen en_US
dc.contributor.authoreid dkropf en_US
dc.contributor.authoreid goodband en_US
dc.contributor.authoreid jhancock en_US

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