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metadata.artigo.dc.title: Economic analysis, performance, and feed efficiency in feedlot lambs
metadata.artigo.dc.creator: Lima, Natália Ludmila Lins
Ribeiro, Carolina Resende de Freitas
Sá, Hemilly Cristina Menezes de
Leopoldino-Júnior, Izac
Cavalcanti, Luigi Francis Lima
Santana, Ronan Aparecido Valadares
Furusho-Garcia, Iraides Ferreira
Pereira, Idalmo Garcia
metadata.artigo.dc.subject: Residual feed intake
Lambs - Weight gain
Feedlot lambs
Ingestão residual de ração
Cordeiros - Ganho de peso
Cordeiros - Confinamento
metadata.artigo.dc.publisher: Sociedade Brasileira de Zootecnia 2017
metadata.artigo.dc.identifier.citation: LIMA, N. L. L. et al. Economic analysis, performance, and feed efficiency in feedlot lambs. Revista Brasileira de Zootecnia, Viçosa, MG, v. 46, n. 10, p. 821-829, 2017.
metadata.artigo.dc.description.resumo: The objective of this study was to evaluate residual feed intake (RFI), residual intake and body weight gain (RIG) and their relationship with other traits of efficiency, performance, and economic analysis of sheep. Lambs (n = 102) were evaluated during 56 days and a herd consisting of 500 ewes was simulated with the mean of dry matter intake (DMI) and final body weight of the lambs, the same as that of the experimental lambs. The lambs were fed hay-based diet of Tifton 85 (Cynodon spp.), corn, and soybean in the voluminous:concentrate ratio of 35:65. Residual feed intake and RIG were correlated with DMI, feed conversion ratio, and feed efficiency. Residual intake and body weight gain were positively correlated with average daily gain, relative growth rate, and Kleiber's rate. The most efficient production systems (lower RFI and higher RIG) had lower costs and higher profit margins. The net present value (NPV) and internal rate of return (IRR) were higher in systems with more efficient lambs. In systems with less efficient lambs, NPV and IRR were negative and lower, respectively. Efficient animals for RFI and RIG showed satisfactory performance and better economic results.
metadata.artigo.dc.language: en_US
Appears in Collections:DZO - Artigos publicados em periódicos

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