Yield, tissue composition and carcass muscularity of Santa Inês lambs fed diets with different ratios of forage sorghum hay to silk flower hay

Revista Brasileira de Zootecnia

Costa, Roberto Germano²  Lira Filho, Gerson Edmo²  Marques, Ana Valéria Mello de Souza³  Madruga, Marta Suely²  Silva, Aderbal Marcos de Azevedo¹  Pereira Filho, José Morais¹ 

[1] UFCG;UFPB;Universidade Federal da Paraíba

关键词: Calotropis procera SW;    carcass;    loin eye area;    meat cuts    Introdução Os ovinos deslanados destacam-se pela eficiência em converter forragem em carne de qualidade;   

DOI  :  10.1590/S1516-35982007000300014

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

This study evaluated the effects of different dietary ratios of forage sorghum (Sorghum bicolor L) hay (FSH) to silk flower hay (Calotropis procera SW) (SFH) on true, biological, and retail carcass yields, carcass cooling losses, retail cut yields, tissue composition and carcass muscularity of Santa Inês lambs. Twenty-four intact male lambs were assigned to one of the following four treatments: 100:0 FSH:SFH, 66:33 FSH:SFH , 33:66 FSH:SFH, or 0:100 FSH:SFH in a completely randomized design (six animals/treatment). Animals were slaughtered at 30.0±0.4 kg of body weight or at 70 days of experiment. There was no effect of treatments on the biological, true, and retail carcass yields, which averaged, respectively 53.17, 45.97%, and 44.34%. Except for shoulder clod and leg cuts, increasing the dietary levels of SFH significantly reduced the slaughter body weight, empty body weight, hot and cold carcass weights, retail cut yields, tissue composition, and carcass muscularity. It can be concluded that the inclusion of up to 16.5% of the diet DM (33% of the dietary forage) as SFH had no detrimental effect on carcass quality.

【 授权许可】

CC BY-NC