Effect of frame size on performance and carcass traits of Santa Inês lambs finished in a feedlot

Revista Brasileira de Zootecnia

Edmilson Lúcio De Souza Júnior²  Wandrick Hauss De Sousa¹  Edgard Cavalcanti Pimenta Filho¹  Severino Gonzaga Neto¹  Felipe Queiroga Cartaxo¹  Marcílio Fontes Cezar²  Maria Das Graças Gomes Cunha¹  José Morais Pereira Filho² 

[1] ,UFCG CSTR Unidade Acadêmica de Medicina VeterináriaPatos PB ,Brazil

关键词: carcass conformation;    commercial cuts;    dry matter intake;    sheep;    tissue composition;    weight gain;   

DOI  :  10.1590/S1516-35982013000400008

来源: SciELO

【 摘 要 】

The objective of this study was to evaluate the performance, qualitative, morphometric and quantitative carcass traits of Santa Inês lambs of different frame sizes finished in a feedlot. Twenty 120-day-old intact lambs with a 25.0±3.1 kg average body weight at the beginning of the experiment were used. Lambs received a diet containing 17% crude protein and 2.70 Mcal/kg dry matter. Frame size influenced performance and tissue composition in the carcasses of the lambs. Lambs with large frame sizes showed better carcass conformation compared with those of medium-sized frames. Frame size was found to have a significant effect on rump perimeter. Large-framed lambs showed higher compactness on the carcass index and carcass dressing area compared with medium-framed lambs. The cuts of large-framed lambs weighed more than those of mediumframed lambs. However, no significant differences were found in dressing.

【 授权许可】

CC BY   
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