Interactive effects between pantothenic acid and ractopamine HCl (paylean®) on growth performance and carcass characteristics of growing-finishing pigs

dc.citation.epage153en_US
dc.citation.spage143en_US
dc.contributor.authorGroesbeck, C.N.
dc.contributor.authorJames, B.W.
dc.contributor.authorKeegan, T.P.
dc.contributor.authorLawrence, K.R.
dc.contributor.authorGoodband, Robert D.
dc.contributor.authorTokach, Michael D.
dc.contributor.authorNelssen, Jim L.
dc.contributor.authorDeRouchey, Joel M.
dc.contributor.authorDritz, Steven S.
dc.contributor.authoreidgoodbanden_US
dc.contributor.authoreidmtokachen_US
dc.contributor.authoreiddritzen_US
dc.contributor.authoreidjnelssenen_US
dc.contributor.authoreidjderouchen_US
dc.date.accessioned2009-10-29T18:28:16Z
dc.date.available2009-10-29T18:28:16Z
dc.date.issued2009-10-29T18:28:16Z
dc.date.published2004en_US
dc.description.abstractTwo experiments were conducted to evaluate the interactive effects between added pantothenic acid and ractopamine HCl (Paylean®) on growth performance and carcass traits of growing-finishing pigs. In Exp. 1, 156 pigs (PIC, initial BW = 56.7 ± 5.8 lb) were used in a 2 × 3 factorial with ractopamine HCl (RAC; 0 or 10 ppm) and added pantothenic acid (PA; 0, 22.5, or 45 ppm). Pigs were fed the assigned PA concentrations from 56.7 to 268.1 lb (d 0 to 98), and were fed RAC for the last 28 d before slaughter. Increasing added PA had no effect (P<0.05) on ADG, ADFI, or feed efficiency (F/G) from d 0 to d 70. A PA × gender interaction (P<0.05) was observed for ADG and F/G from d 71 to 98. Increasing PA increased ADG and F/G in gilts, but not in barrows. Added RAC for the last 28 d before slaughter increased (P<0.001) ADG and F/G for d 71 to 98 and d 0 to 98. Increasing the amount of added PA had no effect (P<0.05) on carcass traits. Adding RAC increased (P<0.001) longissimus muscle area and percentage lean. In Exp. 2, the effects of added PA on N balance of finishing pigs fed RAC were evaluated. A total of 156 barrows (PIC, initial weight = 131.6 lb) were fed added PA (0, 22.5, or 45.0 ppm) for a minimum of eight weeks. A total of 44 pigs were randomly selected from the 156 initial pigs and were moved into individual stainlesssteel metabolism creates. Pigs remained on their respective PA treatments, with or without RAC (10 ppm), for 8 d, were moved out of the collection chambers, and were fed the same diets from d 8 to 28. There were no PA × RAC interactions (P<0.05) observed. Added PA had no effect (P<0.05) on N excretion, N retention, or biological value (BV). Fecal N excretion was greater (P<0.01) for pigs fed RAC, compared with that of the pigs not fed RAC, but urinary N decreased (P<0.01) for the pigs fed RAC, resulting in no difference in total excreted N. Adding RAC increased (P<0.04) BV. No PA (P < 0.05) response was observed for ADG or F/G, and RAC increased (P<0.001) ADG and F/G from d 0 to 28.en_US
dc.description.conferenceSwine Day, 2004, Kansas State University, Manhattan, KS, 2004en_US
dc.identifier.urihttp://hdl.handle.net/2097/1965
dc.publisherKansas State University. Agricultural Experiment Station and Cooperative Extension Serviceen_US
dc.relation.isPartOfSwine day, 2004en_US
dc.relation.isPartOfReport of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 940en_US
dc.relation.isPartOfKansas Agricultural Experiment Station contribution ; no. 05-113-Sen_US
dc.subjectGrowthen_US
dc.subjectPantothenic aciden_US
dc.subjectPigsen_US
dc.subjectRactopamine hclen_US
dc.subjectVitaminen_US
dc.subjectSwineen_US
dc.titleInteractive effects between pantothenic acid and ractopamine HCl (paylean®) on growth performance and carcass characteristics of growing-finishing pigsen_US
dc.typeConference paperen_US

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