Biometry and carcass characteristics of lambs supplemented in tropical grass pastures during the dry season

Authors

  • Thiago Felipe de Medeiros Trindade Universidade Federal do Rio Grande do Norte, Macaíba
  • Gelson dos Santos Difante Universidade Federal do Rio Grande do Norte, Macaíba
  • Leonardo Santana Fernandes Universidade Federal do Maranhão, Chapadinha
  • Itânia Maria Medeiros de Araújo Universidade Federal de Mato Grosso do Sul, Campo Grande
  • Emmanuel Lievio de Lima Véras Universidade Federal do Rio Grande do Norte, Macaíba
  • Marcone Geraldo Costa Universidade Federal do Rio Grande do Norte, Macaíba
  • Maria Gabriela da Trindade Silva Universidade Federal do Rio Grande do Norte, Macaíba
  • Mariana Campelo Medeiros Universidade Federal do Rio Grande do Norte, Macaíba

DOI:

https://doi.org/10.14393/BJ-v34n1a2018-36781

Keywords:

Brachiaria brizantha, commercial cuts, Panicum maximum, carcass yield

Abstract

The objective of this study was to evaluate the biometry and carcass characteristics of finished Santa Inês crossbred sheep grazed on tropical grass pastures during the dry season. The study was carried out at the Grupo de Estudos em Forragicultura (GEFOR/UFRN), in Macaíba - RN, Brazil. Four forage treatments were evaluated: Brachiaria brizantha cvs. Marandu e Piatã, Panicum maximum cvs. Aruana e Massai. The 2.88 ha-area used was divided in two blocks of 1.44 ha; each one was composed of four plots corresponding to each cultivar, and each plot was subdivided into six paddocks with an area of 0.06 ha. The pastures were managed under intermittent stocking with seven days of occupation and 35 days of rest, with variable stocking rate. No significant difference was observed in the biometric measurements evaluated in the animals, except for chest width in which animals kept in Marandu pastures obtained higher values than those in the Aruana cultivar. The lowest values of average daily gain, final weight and weight at slaughter values were observed in the animals kept in Aruana cultivars. Cut weights of the shoulder, the loins, short legs/shanks and ribs were higher in the animals kept in Marandu grass and lower in those kept in the Aruana grass; however, no differences were observed for the yield of the cuts and for the biometric measurements of the carcass. The evaluated pasture cultivars did not modify the finished sheep carcasses, however, the lower forage mass from Aruana grass pastures in the dry season affected animal performance and the sheep carcass composition.

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Author Biography

Marcone Geraldo Costa, Universidade Federal do Rio Grande do Norte, Macaíba

Mariana Campelo Medeiros

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Published

2017-12-20

How to Cite

TRINDADE, T.F. de M., DIFANTE, G. dos S., FERNANDES, L.S., ARAÚJO, I.M.M. de, VÉRAS, E.L. de L., COSTA, M.G., SILVA, M.G. da T. and MEDEIROS, M.C., 2017. Biometry and carcass characteristics of lambs supplemented in tropical grass pastures during the dry season . Bioscience Journal [online], vol. 34, no. 1, pp. 172–179. [Accessed5 December 2022]. DOI 10.14393/BJ-v34n1a2018-36781. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/36781.

Issue

Section

Agricultural Sciences