增加氨酸补充剂减轻了热应激,氨酸可以有效地替代 brojlers中的氨酸
Ji Hwan Lee1, Dong Cheol Song2, Seung Won Jeong2
1Department of Poultry Science, University of Georgia, Athens, GA 30602, USA.
Journal of animal science and technology
|February 16, 2026
概括
氨酸 (Cit) 可以在肉的食中部分取代氨酸 (Arg),在热应激下改善生长和肠道健康. 这项研究确定了Arbor Acres的最佳比例和素有效性.
科学领域:
- 动物营养 动物营养
- 禽畜科学 禽畜科学 禽畜科学
- 热应激生理学 热应激生理学
背景情况:
- 热应激对肉的表现和肠道形态有负面影响.
- 氨酸 (Arg) 对于肉生长至关重要,但其在热应激下的代谢是复杂的.
- 由于其代谢途径,花素 (Cit) 为饮食中的Arg提供了一个潜在的替代品.
研究的目的:
- 在经历周期性热应激的肉中,确定最佳的标准乳腺消化 (SID) 氨酸 (Arg) 与SID氨酸 (Lys) 的比率.
- 在这些条件下,评估素 (Cit) 作为部分替代Arg的疗效.
主要方法:
- 360个Arbor Acres肉被分配给六种饮食治疗,不同的SIDArg:Lys比率和Cit补充水平.
- 测量了生长性能 (体重,体重增加),肠高度 (VH),密室深度 (CD) 和肝/酶活动.
主要成果:
- 与对照组相比,较高的SID Arg:Lys比率 (例如1.25) 和部分Cit替代 (33%) 改善了体重和体重增加.
- 在被养高Arg或部分Cit替代饮食的肉中,肠道VH增加,CD减少.
- 与Arg代谢相关的酶活性显示出治疗特定的变化.
结论:
- 在周期性热应激下,花素可以有效地替代肉饮食中的一部分氨酸.
- 优化SID Arg:Lys比率并考虑Cit补充剂可以减轻热应激对肉性能和肠道健康的负面影响.
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