Characteristics of carcass and of non-carcass components of lambs and hoggets fed high-concentrate corn or sorghum diets

Revista Brasileira de Zootecnia (Print)

Venturini, Rafael Sanches¹  Moro, Anderson Bortoluzzi¹  Simões, Robson Rodrigues¹  Pacheco, Paulo Santana¹  Carvalho, Sérgio¹  Pellegrin, Ana Carolina Ribeiro Sanquetta de¹  Martins, Andressa Ana¹  Lopes, Jusecléia Ferreira² 

[1]Universidade Federal de Santa Maria, Santa Maria, Brazil

[2]Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil

关键词: animal production;    feedlot;    grain cereal;    sheep.;   

DOI  :  10.1590/s1806-92902017000300011

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

The objective of this study was to evaluate the characteristics of carcass and non-carcass components of lambs and hoggets finished in the feedlot with high-concentrate corn or sorghum grain-based diets. Thirty-two animals were finished, comprising 16 lambs (milk teeth) and 16 hoggets (two teeth), which were distributed in a completely randomized design in a 2 × 2 factorial arrangement (two sheep categories × two grains). For the variables final live weight, live weight at slaughter, hot carcass weight, cold carcass weight, hot carcass yield, cold carcass yield, carcass compactness index, subjective color, loin-eye area, fasting losses, external organs, internal organs, and for the weights, in kilograms, of neck, shoulder, ribs, and leg, there was a significant difference between categories. In the variables studied for the high-concentrate diets, significant differences were found for the ribs, expressed in relative values. Lambs have much higher fasting losses, a greater proportion of internal organs, and lighter-colored meat compared with hoggets. Hot and cold carcass yields, meat subjective color, and percentage of ribs are higher in feedlot-finished lambs and hoggets fed high-concentrate sorghum-based diets compared with those fed corn-based diets.

【 授权许可】

Unknown