Effects of heat stress, dietary energy density and exogenous porcine somatotropin on tile growth performance of finishing pigs

dc.citation.epage147en_US
dc.citation.spage142en_US
dc.contributor.authorStoner, G.R.
dc.contributor.authorNichols, David A.
dc.contributor.authorAllee, G.L.
dc.contributor.authorSchricker, B.R.
dc.contributor.authorNelssen, Jim L.
dc.contributor.authoreidjnelssenen_US
dc.contributor.authoreiddnicholsen_US
dc.date.accessioned2010-04-09T15:31:16Z
dc.date.available2010-04-09T15:31:16Z
dc.date.issued2010-04-09T15:31:16Z
dc.date.published1989en_US
dc.description.abstractThis experiment was conducted to determine the interactive effects of environmental temperature porcine somatotropin (pST) and dietary energy density on the growth performance of finishing pigs. Forty-eight barrows were allotted randomly to four environmental chambers (EC) in a split plot design with two EClwhole plot (WP). Each EC (12 barrows/EC) represented one subplot (SP). The WP 24-h environmental cycles were: thermal neutral (TN), 8 h at 75°F and 50% relative humidity (RH)-1 h transition-14 h at 68°F and 60% RH-1 h transition; and heat stress (HS), 8 h at 95°F and 60% RH-1 h transition-14 h at 82°F and 80% RH-1 h transition. Each SP was a 2 x 3 factorial with two treatments (pigs were injected daily with either 4 mg pST (+) or placebo (-)) and three dietary energy densities (lA8, 1.60, and 1.71 Mcal ME/lb). Diets were formulated to contain 19.2% crude protein and at least 200% of NRC (1988) recommendations for essential nutrients. The study was conducted for 32 d. There were no interaction effects for ADG, average daily feed intake, d-14 respiration rate, or d-14 rectal temperature. Differences in respiration rate and rectal temperature were observed between the HS and TN environments (respiration rate 76 vs 28; rectal temperature, 103.8 vs lO1.8°F). There was an environment x pST interaction for feed efficiency (F/G). The F/G of barrows administered pST was similar in HS (2.23) and TN (2.29) environments. The F/G of placebo-treated barrows increased in HS (3.09) compared to the TN (2.80) environment. These results show that "the growth response of finishing pigs treated with pST is similar in the HS and TN environments.en_US
dc.description.conferenceSwine Day, Manhattan, KS, November 16, 1989en_US
dc.identifier.urihttp://hdl.handle.net/2097/3555
dc.publisherKansas State University. Agricultural Experiment Station and Cooperative Extension Serviceen_US
dc.relation.isPartOfSwine day, 1989en_US
dc.relation.isPartOfKansas Agricultural Experiment Station contribution; no. 90-163-Sen_US
dc.relation.isPartOfReport of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 581en_US
dc.subjectSwineen_US
dc.subjectHeat stressen_US
dc.subjectEnergyen_US
dc.subjectPorcine somatotropinen_US
dc.subjectPigen_US
dc.subjectGrowth performanceen_US
dc.titleEffects of heat stress, dietary energy density and exogenous porcine somatotropin on tile growth performance of finishing pigsen_US
dc.typeConference paperen_US

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