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

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dc.contributor.author Groesbeck, C.N.
dc.contributor.author James, B.W.
dc.contributor.author Keegan, T.P.
dc.contributor.author Lawrence, K.R.
dc.contributor.author Goodband, Robert D.
dc.contributor.author Tokach, Michael D.
dc.contributor.author Nelssen, Jim L.
dc.contributor.author DeRouchey, Joel M.
dc.contributor.author Dritz, Steven S.
dc.date.accessioned 2009-10-29T18:28:16Z
dc.date.available 2009-10-29T18:28:16Z
dc.date.issued 2009-10-29T18:28:16Z
dc.identifier.uri http://hdl.handle.net/2097/1965
dc.description.abstract Two 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.publisher Kansas State University. Agricultural Experiment Station and Cooperative Extension Service en_US
dc.relation.isPartOf Swine day, 2004 en_US
dc.relation.isPartOf Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 940 en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution ; no. 05-113-S en_US
dc.subject Growth en_US
dc.subject Pantothenic acid en_US
dc.subject Pigs en_US
dc.subject Ractopamine hcl en_US
dc.subject Vitamin en_US
dc.subject Swine en_US
dc.title Interactive effects between pantothenic acid and ractopamine HCl (paylean®) on growth performance and carcass characteristics of growing-finishing pigs en_US
dc.type Conference paper en_US
dc.date.published 2004 en_US
dc.citation.epage 153 en_US
dc.citation.spage 143 en_US
dc.description.conference Swine Day, 2004, Kansas State University, Manhattan, KS, 2004 en_US
dc.contributor.authoreid goodband en_US
dc.contributor.authoreid mtokach en_US
dc.contributor.authoreid dritz en_US
dc.contributor.authoreid jnelssen en_US
dc.contributor.authoreid jderouch en_US


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