Artículos de revistas
Performance and carcass traits of steers submitted to supplementation in the dry season
Desempenho e características da carcaça de novilhos submetidos à suplementação na seca
Fecha
2014-01-01Registro en:
Revista Brasileira de Saude e Producao Animal, v. 15, n. 4, p. 1052-1060, 2014.
1519-9940
10.1590/s1519-99402014000400023
2-s2.0-84920609413
Autor
Universidade Estadual Paulista (UNESP)
Institución
Resumen
The objective of this study was evaluate the effect of two supplementation strategies in the dry season on performance and carcass traits of steers finished on marandu grass. The experimental design was completely randomized with two treatments and eighteen repetitions per treatment. The treatments consisted of ad libitum protein mineral salt (PMS) and supplementation with concentrate (SC) with 0.5% of body weight. It was used 36 Nelore steers with initial weight of 417kg and 20 months of age. After slaughter, carcasses were weighted, identified and cooled for 24 hours. Carcass yield, ribeye, fat thickness, pH and marbling score were measured. The animals supplemented with concentrate had higher (P<0.01) average daily weight gain (0.562kg) and higher fat thickness adjusted to 100kg carcass than animals supplemented with protein mineral salt (0.395kg), but did not differed (P>0.01) in relation to carcass weight, carcass yield, ribeye, pH and marbling. The results show that the supplementation with concentrate accelerates gains, allowing early and better condition of slaughter and the use of protein mineral salt with adequate forage mass may be an alternative supplementation because less need for structure, control consumption, lower labor and greater ease in supply.