Effects of porcine somatotropin dosage and lysine level on growth performance of growing pigs

dc.citation.epage100en_US
dc.citation.spage97en_US
dc.contributor.authorFitzner, G.E.
dc.contributor.authorWeeden, T.L.
dc.contributor.authorSchricker, B.R.
dc.contributor.authorHines, Robert H.
dc.contributor.authorNelssen, Jim L.
dc.contributor.authorGoodband, Robert D.
dc.contributor.authorHancock, Joe D.
dc.contributor.authoreidjnelssenen_US
dc.contributor.authoreidgoodbanden_US
dc.contributor.authoreidjhancocken_US
dc.date.accessioned2010-04-02T17:28:42Z
dc.date.available2010-04-02T17:28:42Z
dc.date.issued2010-04-02T17:28:42Z
dc.date.published1991en_US
dc.description.abstractEighty crossbred barrows initially weighing 70.5 lb were used in a 5 wk trial to determine the optimum dosage of porcine somatotropin (PST) required to promote maximum growth response in growing pigs fed diets containing either 1.0 or 2.0% lysine. Pigs received a daily injection of placebo or 2, 4, or 8 mg pST in combination with one of two experimental diets containing either 1.0 or 2.0% dietary lysine. Increasing the dosage of pST of pigs fed both diets resulted in an increase in average daily gain (ADG), a reduction in average daily feed intake (ADFI), and an improvement in feed conversion (F/G). Average backfat, calculated from ultrasonic measurements at the first rib, last rib, and last lumbar vertebra, was reduced in pigs fed both diets as pST dosage increased. Serum pST increased and urea nitrogen decreased for pigs fed both diets as pST dosage increased. The improvement in ADG and F/G of pigs fed both diets was quadratic, indicating that a plateau was achieved between 4 and 8 mg/d pST administration. The serum urea nitrogen response appeared to plateau near 8 mg/d. The combination of these response criteria indicates that the dosage required for maximum response is about 7 mg/d pST, whereas the more optimum level of pST administration may be about 5 mg/d for growing pigs fed diets containing 1.0 or 2.0% lysine.en_US
dc.description.conferenceSwine Day, Manhattan, KS, November 21. 1991en_US
dc.identifier.urihttp://hdl.handle.net/2097/3488
dc.publisherKansas State University. Agricultural Experiment Station and Cooperative Extension Serviceen_US
dc.relation.isPartOfSwine day, 1991en_US
dc.relation.isPartOfKansas Agricultural Experiment Station contribution; no. 92-193-Sen_US
dc.relation.isPartOfReport of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 641en_US
dc.subjectSwineen_US
dc.subjectGFen_US
dc.subjectRepartitionen_US
dc.subjectPerformanceen_US
dc.subjectLysineen_US
dc.titleEffects of porcine somatotropin dosage and lysine level on growth performance of growing pigsen_US
dc.typeConference paperen_US

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