养牛的生长表现和尸体特征与单素相关或不相关的桑宁
Kaique S Nascimento1, Lorena Emily L M Bomfim1, Victor R M Couto1
1Universidade Federal de Goiás, Escola de veterinária e Zootecnia, Goiânia, Goiás, Brazil.
Translational animal science
|October 18, 2024
概括
与素相比,素补充改善了公牛的生长和尸体特征. 结合单宁和单宁素提高了料效率,在含有14%原蛋白的饮食中看到的最佳结果.
科学领域:
- 动物科学动物科学
- 类动物营养 类动物营养
- 料添加剂 料添加剂
背景情况:
- 高谷物饮食是完成牛的常见做法.
- 料效率和生长性能是牛肉生产的关键经济驱动因素.
- 了解素和单宁素等料添加剂的影响对于优化饮食至关重要.
研究的目的:
- 评估单独或组合的素和单素对公牛的料效率,生长性能和尸体特征的影响.
- 评估饮食原蛋白水平 (14%对13%) 对这些结果的影响.
- 为了确定对肉牛食高谷物饮食的多素和单素的最佳组合.
主要方法:
- 在一个随机的块设计实验中,使用了64只Nellore和96只杂交的公牛.
- 治疗包括含有素,素或两者的组合,14%的原蛋白 (CP) 和13%的CP组合的饮食.
- 收集和分析了料摄入量,体重增加和尸体数据.
主要成果:
- 素补充剂增加了最终的体重,平均每日增加,和干物质摄入量,与单素相比.
- 单宁和单宁的组合减少了干物质的摄入量,改善了增益料比率和能量利用率.
- 单独服用坦宁补充剂导致较高的热尸体重量和 gluteus medius 区域,而不是 monensin.
- 将饮食CP从14%降至13%降低了生长性能和料摄入量.
结论:
- 坦宁在养高谷物饮食的公牛中显示出改善生长和尸体特征的潜力.
- 单宁和单宁的组合为料效率和能源利用提供了协同效应的好处.
- 14%的原始蛋白质水平是最大限度地提高生长和料效率的最佳水平,当使用素和素补充剂时.
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