已收录 268921 条政策
 政策提纲
  • 暂无提纲
Non-carcass components of castrate and non-castrated cattle finished in feedlot and slaughtered at 16 or 26 months of age
[摘要]

The non-carcasscomponents of castrated and non-castrated cattle (sex condition) finished infeedlot and slaughtered at 16 (super young) or 26 (young) months of age (animalcategory) were evaluated. The diet was formulated to contain 11.8% of CP and2.83 Mcal/kg DM of DE with 50:50 forage to concentrate ratio (%MS). Super younganimals showed higher of empty body dressing percentage (92.39 versus89.76%), as a result of their lower gastrointestinal content (35.23 versus53.46 kg) as compared to the young animals. Non-castrate animals showed higherhead weight (13.84 versus 12.35 kg), feet (11.12 versus 8.96 kg)and rawhide (46.44 versus 37.71 kg) as compared to castrate animals,which are related to their higher body weight (541.26 versus 445.47 kg).There was influence of animal category x sex condition interaction onabsolute weight of vital organs (heart, liver and lungs) and the gastrointestinaltract components (GIT). The total weight of vital organs and GIT was higherin non-castrate animals, but not significant when adjusted for empty body weightand slaughter weight. Super young animals showed higher absolute internal fatweight (25.91 versus 20.13 kg) and hot fat trim (13.96 versus10.98 kg). The castration of animals resulted in higher participation of internalfat calculated on empty body weight and slaughter weight.

[发布日期]  [发布机构] 
[效力级别]  [学科分类] 兽医学
[关键词]  [时效性] 
   浏览次数:2      统一登录查看全文      激活码登录查看全文