Carcass characteristics of lambs fed diets containing silage of different genotypes of sorghum

Revista Brasileira de Zootecnia

Juraci Marcos Alves Suassuna²  Edson Mauro Santos¹  Juliana Silva De Oliveira¹  Paulo Sérgio De Azevedo¹  Wandrick Hauss De Sousa¹  Ricardo Martins Araujo Pinho¹  João Paulo De Farias Ramos¹  Higor Fábio Carvalho Bezerra¹ 

[1],Universidade Federal Rural de Pernambuco Departamento de Zootecnia Recife PE ,Brasil

关键词: feedlot;    primal cuts;    production systems;    sheep;   

DOI  :  10.1590/S1516-35982014000200005

来源: SciELO

【 摘 要 】

Thirty-five feedlot lambs (without defined breed, aged between 5 and 7 months, with average live weight of 17.7±3.7 kg) were used in a completely randomized design to evaluate the effect of diets containing different genotypes of sorghum on morphometric measurements and qualitative characteristics of carcass and yields of primal cuts. The animals stayed in individual indoor pens for 42 days and slaughtered at an average weight of 26.24 kg. No significant differences were observed on morphometric measurements, hot (11.67 kg) and cold (11.39 kg) carcass weight, hot (44.46%) and cold (43.37%) carcass yields, biological yield and on cooling losses. There was also no significant effect of silages of different genotypes of sorghum on the weights and yields of retail cuts (neck, shoulder, rib, loin and leg) and on the subjective evaluation of carcasses. It is possible to finish sheep without defined breed feeding them diets based on silages of sorghum, resulting in carcasses with high yield and good conformation.

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