基于表型改进的猪对氨基酸需求的最新更新
Hyunjun Choi1, Jung Yeol Sung1, Jeonghyeon Son1
1North Carolina State University, Raleigh, United States.
Animal bioscience
|February 12, 2026
概括
对猪的更新的氨基酸要求反映了它们增强的遗传潜力. 目前的建议,基于标准化ileal可消化的lysine与净能量比率,高于以前的指导方针,特别是在生长的猪.
科学领域:
- 动物营养 动物营养
- 猪生理学 猪生理学
- 营养素要求 营养素要求
背景情况:
- 猪的确定的氨基酸 (AA) 要求,如2012年国家研究委员会 (NRC) 的要求,可能与当前的遗传进步不一致.
- 猪对瘦身生长的改善遗传潜力需要更新营养指南.
研究的目的:
- 审查和更新对猪的氨基酸要求.
- 根据最近的数据,建立标准化质可消化 (SID) 氨基酸与SID lysine (Lys) 和SID Lys与净能量 (NE) 的最佳比率.
主要方法:
- 进行了元分析,以确定平均每日增益 (ADG) 和增益-养比率的最佳比率.
- 专注于SID氨酸与净能量 (SID Lys:NE) 和SID氨基酸与SID氨酸 (SID AA:Lys) 的比率.
主要成果:
- 在所有猪阶段,ADG的最佳SID Lys:NE高于NRC的建议.
- 最佳SID氨酸:lys,氨酸:lys和Isoleucine:Lys对ADG的比率通常高于NRC值,并且随着体重增加而保持不变.
- 猪体重量随着ADG的增加而增加,而Valine:Lys在育儿阶段更高,这表明与生长和挑战相关的特定需求.
结论:
- 目前的猪遗传潜力需要比以前报告的SID Lys:NE和SID AA:Lys比率更高.
- 根据猪体重来推调整的SID Threonine:Lys和SID Valine:Lys比率,以实现最佳生长和料效率.
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