Production of steers or bulls finished in feedlot at a young age or young steers

被引:4
作者
Cullmann, J. R. [1 ]
Kuss, F. [2 ]
Moletta, J. L. [3 ]
Lancanova, J. A. C. [3 ]
Silveira, M. F. [2 ]
Menezes, L. F. G. [2 ]
Moura, I. C. F. [4 ]
Strack, M. [5 ]
机构
[1] Univ Tecnol Fed Parana, Dois Vizinhos, PR, Brazil
[2] Univ Tecnol Fed Parana, Dois Vizinhos, PR, Brazil
[3] Inst Agron Parana, Iapar, PR, Brazil
[4] Univ Fed Parana, Curitiba, Parana, Brazil
[5] Fundacao ABC, Pesquisa & Desenvolvimento Agr, Castro, PR, Brazil
关键词
Canchim; commercial cuts; feed conversion; Puruna; weight gain; DIFFERENT GENETIC GROUPS; CARCASS CHARACTERISTICS; CONCENTRATE LEVELS; ECONOMIC-EVALUATION; MEAT PRODUCTION; NELLORE CATTLE; WEIGHT-GAIN; PERFORMANCE; DIETS; CANCHIM;
D O I
10.1590/1678-4162-9100
中图分类号
S85 [动物医学(兽医学)];
学科分类号
0906 ;
摘要
The productive performance and yield of commercial cuts of the carcass of non-castrate or castrated males feedlot finished and slaughtered at a young age or young steers, fed a diet containing 11.2% crude protein and 3.07 Mcal of digestible energy / kg of dry matter, composed of 50% roughage and 50% concentrate were evaluated. The initial age at the beginning of confinement of young steers and steers were 9 and 22 months, respectively. Greater FW was observed for young non-castrate. The ADG was 31% higher for the steers in relation to young steers. The DMI was 27% higher for steers than young steers and non-castrated consumed 9% more dry matter kg compared to the castrated. The half-carcass weight difference between non-castrated and castrated animals was 43% for steers and 18% for young steers. Higher percentage hacksaw cut was observed in castrated steers. Steers showed higher average daily weight gain, as well as non-castrate steers showed higher final weight. Non-castrate animals have higher half cold carcass weights, front percentage, and of edible portion of the front in relation to castrated.
引用
收藏
页码:155 / 164
页数:10
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