重新评估最近关于家禽的能量代谢利用的研究:对 brojlers 的净能量系统的建议
Jean Noblet1, Aye-Cho Tay-Zar2, Shu-Biao Wu3
1INRAE, Rennes, France.
Animal nutrition (Zhongguo xu mu shou yi xue hui)
|January 31, 2024
概括
净能量 (NE) 系统提供了比表面代谢能 (AME) 更准确的家禽料能量评估. 实施NE系统可以提高肉的性能和料配方的准确性.
科学领域:
- 动物营养 动物营养
- 禽畜科学 禽畜科学 禽畜科学
- 料评估 料评价
背景情况:
- 传统的动物料能量评估系统包括可消化能量 (DE) 和可代谢能量 (ME).
- 净能量 (NE) 系统,占代谢热量损失,在反动物和猪中被广泛采用,但在家禽中不那么广泛.
- 表面代谢能量 (AME) 是家禽的标准,但NE提供了提高准确性的潜力.
研究的目的:
- 解决在家禽料中测量NE的方法考虑.
- 总结关于家禽的NE系统的当前知识.
- 提出和验证家禽料的NE预测方程.
主要方法:
- 分析了50个完整的肉饮食,以开发NE预测方程.
- 在预测模型中包括AME含量和化学指标.
- 建议方程的验证使用30只肉饮食的独立集合.
主要成果:
- 开发并验证了适用于料成分和完整饮食的NE预测方程.
- 证实AME是NE值的主要预测因素.
- 表明与AME相比,NE是肉表现的优越预测指标.
- 证明NE和AME系统之间的料能量层次有所不同,在NE下脂肪值较高,蛋白质值较低.
结论:
- 有足够的数据可以在家禽料配方中实施NE系统.
- 采用NE系统可以提高家禽料配方的精度.
- NE系统提供了更准确的料能量评估,可能改善肉生长和效率.
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