在缺乏原始蛋白质的饮食中补充本佐酸会降低育猪的生长性能
Paulo H A de Azevedo1, Alex C Outlaw1, Lillian Jeffers1
1Department of Animal Sciences, Auburn University, Auburn, AL 36849, USA.
Journal of animal science
|August 22, 2025
概括
将酸添加到低粗蛋白 (CP) 饮食中显著降低了育猪生长性能. 这表明,在缺乏CP的饮食中补充酸可能会对猪的生长和营养利用产生负面影响.
科学领域:
- 动物营养
- 猪生理学
- 营养物质的代谢
背景情况:
- 原蛋白 (CP) 是猪生长的关键营养物质.
- 酸会转化为希普酸,一种通过尿液排泄的甘氨酸结合物.
- 饮食成分和代谢途径之间的相互作用可以影响动物的表现.
研究的目的:
- 研究低原蛋白饮食和酸补充剂对育猪生长的联合影响.
- 评估对平均每日增益 (ADG),料效率 (G:F) 和血清代谢物度的影响.
主要方法:
- 哺乳猪被养为对照 (19. 8% CP),低 CP (15. 8% CP) 或低 CP + 酸饮食四周.
- 每周测量成长性能参数 (ADG,ADFI,G:F).
- 在特定的时间点分析血清酸,甘氨酸和氨酸度.
主要成果:
- 与对照组和低CP组相比,养低CP+酸的猪呈现较低的ADG和G:F.
- 在LCP+BA群体中血清酸水平升高.
- 在LCP+BA组中血清氨酸度最高,表明潜在的低效利用.
结论:
- 在缺乏CP的饮食中补充酸会加剧生猪生长性能的负面影响.
- 酸可能会损害低CP饮食的猪的营养利用,特别是素.
- 需要仔细考虑将酸纳入猪的饮食,以避免有害的生长结果.
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