The effects of porcine somatotropin (pST) dosage and dietary lysine level on growth performance and carcass characteristics of finishing swine

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dc.contributor.author Schricker, B.R.
dc.contributor.author Stoner, G.R.
dc.contributor.author Danler, R.J.
dc.contributor.author Thaler, R.C.
dc.contributor.author Kenny, B.P.
dc.contributor.author Hurt, S.S.
dc.contributor.author Fitzner, G.E.
dc.contributor.author Apple, J.
dc.contributor.author Warren, K.
dc.contributor.author Goodband, Robert D.
dc.contributor.author Nelssen, Jim L.
dc.contributor.author Hines, Robert H.
dc.contributor.author Kropf, Donald H.
dc.contributor.author Hancock, Joe D.
dc.date.accessioned 2010-04-15T21:43:17Z
dc.date.available 2010-04-15T21:43:17Z
dc.date.issued 2010-04-15T21:43:17Z
dc.identifier.uri http://hdl.handle.net/2097/3614
dc.description.abstract One hundred and forty-four finishing pigs (initial weight 126 lb) were utilized to determine the effects of PST dosage (4 or 8 mg PST' head^-1day^-1 ) and dietary lysine level (.8, 1,0, 1.2, or 1.4%) on growth performance and carcass characteristics. Pigs were injected daily in the extensor muscle of the neck with either 4 or 8 mg PST and fed a pelleted corn-soybean meal-sesame meal diet containing .8% lysine. Additional lysine levels of 1.0, 1.2, and 1.4% were provided by L-lysine HCl. Control pigs (placebo injection) received the .8% lysine diet. All diets were formulated to contain at least 220% of NRC (1979) recommendations for other amino acids, vitamins and minerals. There were no PST x lysine interactions for any observed traits (P>,1 0), so only main effects are reported. Increasing level of dietary lysine resulted in linear improvements in average daily gain (ADG) and feed conversion (F/G) in PST treated pigs. Adjusted backfat thickness (ABF) was lowered (linear P<.05), whereas longissimus muscle area (LMA) was increased (linear P<.05) with increasing lysine level. Pigs injected with 8 mg PST had similar ADG compared to 4 mg PST-treated pigs, and both were greater than controls (linear and quadratic P < .05%). Increasing PST dosage improved F/G (linear and quadratic P < .05), LMA and reduced ABF (linear P < .05). Urea concentrations determined in plasma on day 28 decreased (linear and Quadratic P<.05) with increasing lysine level, whereas free fatty acids and insulin tended to increase (P<.10). Porcine somatotropin dosage decreased urea concentrations while glucose, insulin and free fatty acid concentrations increased (linear and quadratic P < .05) in plasma. Trimmed ham and loin weights were increased slightly (P >.10) by increasing dietary lysine level and were also increased (linear P < .10) by PST dosage. en_US
dc.publisher Kansas State University. Agricultural Experiment Station and Cooperative Extension Service en_US
dc.relation.isPartOf Swine day, 1988 en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 88-149-S en_US
dc.relation.isPartOf Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 556 en_US
dc.subject Swine en_US
dc.subject Porcine somatotropin en_US
dc.subject Dosage en_US
dc.subject Lysine requirement en_US
dc.subject Growth performance en_US
dc.subject Carcass traits en_US
dc.subject Finishing pigs en_US
dc.title The effects of porcine somatotropin (pST) dosage and dietary lysine level on growth performance and carcass characteristics of finishing swine en_US
dc.type Conference paper en_US
dc.date.published 1988 en_US
dc.citation.epage 96 en_US
dc.citation.spage 89 en_US
dc.description.conference Swine Day, Manhattan, KS, November 17, 1988 en_US
dc.contributor.authoreid goodband en_US
dc.contributor.authoreid jnelssen en_US
dc.contributor.authoreid dkropf en_US
dc.contributor.authoreid jhancock en_US

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