一个修订的能源交易模型和羊的身体组成
Victor Hutton Oddy1,2, James C H Dougherty1,3,2, Mark Evered1
1NSW Department of Primary Industries, Extensive Livestock Centre, University of New England, Armidale, NSW, Australia.
Journal of animal science
|December 5, 2023
概括
一个新的动态模型通过计算能量交易产生的内部热量产生,准确地预测成长中的羔羊的身体组成. 这种机械模型比目前的养系统提供了更大的透明度和潜在的适用性.
科学领域:
- 动物科学动物科学
- 营养生理学 营养生理学
- 计算生物学 计算生物学
背景情况:
- 准确预测身体成分对于优化畜牧生产和管理至关重要.
- 现有的养标准往往缺乏机械细节,限制了它们的预测能力和适用性.
- 动态模型提供了一种更透明的方法来了解成长中的动物的能量利用和身体成分变化.
研究的目的:
- 开发和评估一种机械,动态模型,用于计算生长中的羔羊的体质组成.
- 为了改善预测羊羔体内的热量生产和能量交易.
- 为了将模型的性能与当前的澳大利亚养标准进行比较.
主要方法:
- 开发了一个具有明显脂肪和蛋白质池 (内脏,非内脏,羊毛) 的动态模型.
- 从禁食,产品形成和养中计算的热量产生.
- 为维护,蛋白质和脂肪沉积而使用的能源所带来的部分效率.
- 使用独立数据集验证模型.
主要成果:
- 与当前标准相比,该模型证明了蛋白质增加的优异预测.
- 预测脂肪增加和无羊毛空体体重的性能与现有方法相比.
- 预测清洁羊毛生长的准确性与当前的养标准相似.
- 该模型允许同时增加蛋白质和减少脂肪,或者反之亦然.
结论:
- 开发的机械模型提供了一个透明的,可能更广泛适用的工具,用于预测羔羊的身体成分.
- 明确表示能源交易可以提高对增长动态的理解.
- 该模型的结构允许适应各种增长轨迹和外部影响.
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