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首页> 外文期刊>Canadian Journal of Animal Science >Carcass characteristics of grass-fed crossbred bulls and steers slaughtered at two different ages
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Carcass characteristics of grass-fed crossbred bulls and steers slaughtered at two different ages

机译：草皮杂交公牛和阉牛的胴体特征在两个不同的年龄屠杀

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摘要

The aim of this study was to evaluate beef production potential and meat quality in young crossbred bulls and steers raised indoors and fed grass-based diets. One half of 96 bull calves were castrated at 2-3 wk of age. The calves were fed standard diets, and starting at 7 mo of age, they received grass silage supplemented with concentrates. At the end of the fattening period (18 and 21 mo of age), the animals were slaughtered, carcass quality was evaluated, and samples of musculus longissimus thoracis were collected to determine the proximate composition and meat quality. The semi-intensive feeding system contributed to higher daily gains (0.835 kg) in Holstein-Friesian (HF) x Hereford (HH) crosses. In comparison with steers, bulls were characterized by a higher dressing percentage (+1.33%), higher weight of five most valuable primal cuts (+6.7 kg), and higher lean meat content of three- rib cuts (+7.54%). Meat from steer carcasses, which had higher fat content was more tender and had desirable aroma, juiciness, and flavor. In semi-intensive production systems, steers performed better than bulls, and HF x HH crosses were more suitable than HF x Limousin (LM) and HF x Charolais (CH) crosses. Dairy-beef crosses should be slaughtered at 21 mo of age to improve carcass quality.
机译：本研究的目的是评估年轻杂交公牛和阉牛肉中的牛肉生产潜力和肉质，并在室内饲养和喂养基于草地的饮食。 96只公牛小牛的一半被阉割在2-3周龄。小牛喂养标准饮食，并从7月7日开始，他们接受了补充浓缩物的草青贮饲料。在育肥期（18和21℃）结束时，屠宰动物，评价胴体品质，收集肌肉肌肉样品，以确定近似的组成和肉质。半强化饲养系统在Holstein-Friesian（HF）X的日常收益（0.835千克）尤其福德（HH）十字架上。与阉牛相比，公牛的特征在于更高的敷料百分比（+ 1.33％），重量率高的五种最有价值的原始切口（+ 6.7千克），三肋切割的更高瘦肉含量（+ 7.54％）。来自转向尸体的肉类，脂肪含量较高，更温柔，具有理想的香气，脂肪和味道。在半密集的生产系统中，阉牛比公牛队更好，而HF X HH十字架比HF X Limousin（LM）和HF X Charolais（Ch）十字架更适合。奶牛十字架应在21℃屠宰，以提高胴体品质。

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  • 来源
    《Canadian Journal of Animal Science》 |2018年第2期|共10页
  • 作者

    Pogorzelska-Przybylek Paulina; Nogalski Zenon; Sobczuk-Szul Monika; Purwin Cezary; Momot Martyna;

  • 作者单位

    Univ Warmia &

    Mazury Fac Anim Bioengn Dept Cattle Breeding &

    Milk Evaluat Ul Oczapowskiego 5-137 PL-10719 Olsztyn Poland;

    Univ Warmia &

    Mazury Fac Anim Bioengn Dept Cattle Breeding &

    Milk Evaluat Ul Oczapowskiego 5-137 PL-10719 Olsztyn Poland;

    Univ Warmia &

    Mazury Fac Anim Bioengn Dept Cattle Breeding &

    Milk Evaluat Ul Oczapowskiego 5-137 PL-10719 Olsztyn Poland;

    Univ Warmia &

    Mazury Fac Anim Bioengn Dept Anim Nutr &

    Feed Sci Ul Oczapowskiego 5-248 PL-10719 Olsztyn Poland;

    Univ Warmia &

    Mazury Fac Anim Bioengn Dept Cattle Breeding &

    Milk Evaluat Ul Oczapowskiego 5-137 PL-10719 Olsztyn Poland;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 动物学;
  • 关键词

    bulls; steers; carcass; meat quality; sensory properties;

    机译：公牛队;阉牛;胴体;肉质;感官属性;

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