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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/42728
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dc.creatorJosi Castro Pannissonpt_BR
dc.creatorLis Lorena Melúcio Guedespt_BR
dc.creatorBruno Alexander Nunes Silvapt_BR
dc.creatorAlex Maiorkapt_BR
dc.creatorSimone Gonçalves Oliveirapt_BR
dc.creatorAlyson Saraivapt_BR
dc.creatorMarcio de Souza Duartept_BR
dc.creatorKariny Fonseca Silvapt_BR
dc.creatorErika Viviane Santospt_BR
dc.creatorRonaldo Lucas Santos Tolentinopt_BR
dc.creatorIdael Matheus Goes Lopespt_BR
dc.date.accessioned2022-06-28T15:46:25Z-
dc.date.available2022-06-28T15:46:25Z-
dc.date.issued2019-
dc.citation.volume14pt_BR
dc.citation.issue2pt_BR
dc.citation.spage277pt_BR
dc.citation.epage284pt_BR
dc.identifier.doihttps://doi.org/10.1017/S1751731119001708pt_BR
dc.identifier.issn2076-2615pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/42728-
dc.description.resumoThe dietary inclusion of feed additives to improve the carcass characteristics of the final product is of great importance for the pork production chain. The aim of our study was to evaluate the effects of the association of ractopamine (RAC) and conjugated linoleic acid (CLA) on the performance traits of finishing pigs during the last 26 days prior to slaughter. In total, 810 commercial hybrid barrows were used. Animals were distributed among treatments according to a randomised block design in a 3 × 3 factorial arrangement, with three RAC levels (0, 5 or 10 ppm) and three CLA levels (0, 0.3 or 0.6%). Pigs fed the diet with 5 ppm RAC had higher average daily feed intake (ADFI) (2.83 kg; P < 0.05) when compared with those fed 10 ppm RAC and the control diet (2.75 and 2.74 kg, respectively). Lower ADFI values (P < 0.01) were observed with the diets containing CLA compared with the control diet with no CLA (2.73 and 2.75 v. 2.85 kg/day, respectively). The average daily weight gain of pigs fed 5 and 10 ppm RAC was +148 and +173 g/dayhigher (P < 0.001), respectively, than those fed the control diet. Dietary RAC levels influenced (P < 0.001) feed conversion ratio (FCR), which was reduced as RAC levels increased, with the pigs fed 10, 5 and 0 ppm RAC presenting FCR values of 2.57, 2.71 and 3.05, respectively. FCR also improved (P < 0.05) with the inclusion of 0.6% CLA relative to the control diet (2.70 v. 2.84, respectively). There was a significant interaction between CLA × RAC levels (P < 0.01) for final BW, loin eye area (LEA) (P < 0.05) and backfat thickness (BT) (P < 0.05). The treatments containing 10 ppm RAC + 0.6% or 0.3% CLA increased LEA and reduced BT. In conclusion, the level of 10 ppm inclusion of RAC increased the overall performance parameters of pigs and therefore improved production efficiency. The combined use of RAC and CLA promoted a lower feed conversion ratio as well as better quantitative carcass traits, as demonstrated by the higher LEA and lower BT. The dietary inclusion of CLA at 0.3% improved feed efficiency, however, without affecting LEA or BT yields.pt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICA - INSTITUTO DE CIÊNCIAS AGRÁRIASpt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofAnimalpt_BR
dc.rightsAcesso Abertopt_BR
dc.subject.otherSuíno -- Desempenhopt_BR
dc.subject.otherNutrição animalpt_BR
dc.subject.otherBetabloqueadores adrenérgicospt_BR
dc.subject.otherSuíno -- Carcaçaspt_BR
dc.subject.otherSuíno -- Abatept_BR
dc.subject.otherCarne de porco -- Qualidadept_BR
dc.titleEffect of ractopamine and conjugated linoleic acid on performance of late finishing pigspt_BR
dc.title.alternativeEfeito da ractopamina e ácido linoleico conjugado no desempenho de suínos de terminação tardiapt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/pii/S1751731119001708?via%3Dihub#!pt_BR
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