低蛋白饮食中的,非酸和电解质平衡影响中等生长的黄羽肉的生长,部发育和肌肉蛋白质沉积
Xiaoran Li1, Bing Wu2, Liyang Zhang1
1Mineral Nutrition Research Division, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
Poultry science
|July 23, 2025
概括
通过低蛋白饮食优化肉的营养需要精确的矿物质含量. 这项研究发现,0.9%的,0.45%的非酸盐和300 meq/kg的电解质平衡是年轻 brojlers的生长和发展的最佳.
科学领域:
- 动物科学动物科学
- 禽类的营养 养
- 营养生理学 营养生理学
背景情况:
- 禽类饮食中过量的蛋白质增加了生产成本和环境污染.
- 补充必需氨基酸的低蛋白饮食正在成为标准做法.
- 在这些低蛋白饮食中对 brojlers 的最佳矿物质需求 (,非酸盐,电解质平衡) 尚未明确定义.
研究的目的:
- 研究不同饮食 (Ca),非酸盐 (NPP) 和电解质平衡 (DEB) 对肉性能的影响.
- 为了确定 Ca,NPP 和 DEB 增长的最佳水平,血清参数,骨特征和肉的肌肉蛋白质沉积,在被养低蛋白饮食的肉中.
- 分析这些营养素对乳腺肌肉相关基因表达的影响.
主要方法:
- 进行了一项3x3因数实验,对324只1至30天大的雄性黄羽肉进行了实验.
- 鸟类被养为低蛋白质 (19%原蛋白) 饮食和9种治疗组合的Ca (0.7-0.9%),NPP (0.35-0.45%),和DEB (200-300 meq/kg).
- 评估了生长性能,血清生物化学,骨特征,肌肉蛋白质含量和基因表达 (FOXO1,FOXO3,MYOG,FBX032).
主要成果:
- 将DEB提高到300 meq/kg显著改善了最终的体重,平均每日增加和料摄入量.
- ,NPP和DEB之间的相互作用影响了血清,性酸酶,骨强度和肌肉蛋白相关的基因表达.
- 高水平的Ca (0.8-0.9%) 和NPP (0.40-0.45%) 提高了骨矿物质密度,含量和灰含量.
结论:
- 在1至30天的低蛋白饮食中,中等生长的黄羽肉的最佳饮食水平是0.9%的Ca,0.45%的NPP和300 meq/kg的DEB.
- 这些水平支持卓越的生长性能,部发育和肌肉蛋白质沉积.
- 这项研究为可持续和经济高效的肉生产提供了关键的营养指南.
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