饮食中乳头可降解蛋白质水平对生长性能,乳头发酵和利用在生长的胡羊群中的影响
Yu Zang1,2, Jun Zhu1, Xinhuang Zhong1
1College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu, 225009, China.
Translational animal science
|March 13, 2026
概括
供应足够的乳头可降解蛋白 (RDP) 对绵羊至关重要. 最佳的RDP水平提高了皮发酵和利用率,其中10.0%的RDP显示了胡羊的最佳结果.
科学领域:
- 动物营养 动物营养
- 动物生理学 动物生理学
- 农业科学 农业科学
背景情况:
- 体可降解蛋白 (RDP) 对于体发酵和绵羊的微生物蛋白质合成至关重要.
- 了解不同RDP水平对生长,功能和代谢的影响对于优化绵羊生产至关重要.
研究的目的:
- 调查不同饮食RDP度对胡羊的生长性能,皮发酵和利用的影响.
- 为了确定养殖胡羊的最佳RDP水平.
主要方法:
- 44只在成长中的胡羊被食11周的RDP度为11.0%,10.0%,9.0%和8.0%.
- 评估的生长性能,身体测量,乳头发酵参数 (VFA,氨),营养消化能力和分泌量.
- 分析了饮食RDP水平的线性,二次性和立方效应的数据.
主要成果:
- 饮食RDP水平没有影响生长表现 (BW,ADG,DMI,FCR) 或超过料成本的收入.
- 降低RDP线性地降低了身体高度,并倾向于降低胸部深度,而胸部宽度显示出二次反应.
- 液中VFA度,NDF消化能力和利用率 (N保留) 在10.0%的RDP时得到了优化.
- 尿液中的分泌量与减少的RDP线性减少,而便中的输出显示出一个立方体效应.
结论:
- 将食RDP从11.0%降低到8.0%并没有影响胡羊的生长性能.
- 在10.0%的RDP饮食中观察到最佳的乳头发酵,营养消化能力和利用率.
- 结果表明,10.0%的RDP是培养胡羊的最佳选择,平衡性能与效率.
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