Birth season on regional and tissue carcass composition in Texel breed lambs

Revista Brasileira de Zootecnia

Mendonça, Gilson de²  Osório, José Carlos da Silveira¹  Rocha, Anilza¹  Gonçalves, Michelle¹  Osório, Maria Teresa Moreira¹  Silveira, Isabella Dias Barbosa¹ 

[1] UFPEL;UNIPAMPA

关键词: cuts;    meat;    sheep     IntroduçãoNo Rio Grande do Sul;    a estacionalidade reprodutiva – característica da espécie ovina –;    aliada às condições de meio ambiente existentes na região;    determina uma única época de nascimentos no estado e;    conseqüentemente;    limitação no período de oferta de cordeiros para o abate ao longo do ano;   

DOI  :  10.1590/S1516-35982008000600018

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

The effect of alternative birth season on regional and tissue carcass composition of sheep was evaluated. Forty nine (49) Texel intact male lambs, born in two seasons (August and November), were kept under grazing and slaughtered with an average age of 129 and 164 days, respectively. Prior to slaughter forage production was measured using Botanal method. Lambs born in August had more favorable forage conditions, showing higher body weight and proportion in the majority of cuts, as well as lower proportion of shoulder and leg muscles showing higher adipose tissue content in the majority of carcass cuts. For lambs born in November, a higher muscle:fat and muscle:bone rate in shoulder and leg, as well as a higher ribcut muscle:fat rate. Nutritional conditions are responsible for differences in weights and cuts yields, as well as for the tissue carcass composition, in lambs maintained under grazing regime, making feasible the use of alternative birth periods to increase animal offer for slaughter.

【 授权许可】

CC BY-NC