饮食中的和蛋白质水平会影响小的生长表现,肠道发育和营养利用
Yuanjing Chen1, Guoqiang Su2, Ning Li2
1College of Veterinary Medicine, Yangzhou University, Yangzhou 225000, China.
Veterinary sciences
|April 26, 2025
概括
优化食中的和原始蛋白质水平可提高幼的生长性能和营养利用率. 适度水平可以改善体重和料转化,而过多的会阻碍发育.
科学领域:
- 禽类的营养 养 养
- 动物科学动物科学
- 消化系统生理学 消化系统生理学
背景情况:
- 小需要精确的营养水平,以在繁殖期内实现最佳生长.
- 食中的 (Ca) 和原蛋白 (CP) 对家禽的发育和新陈代谢至关重要.
- 了解营养相互作用是提高家禽生产效率的关键.
研究的目的:
- 评估不同饮食和原蛋白水平对小生长的影响.
- 评估对营养利用,肠道形态和消化酶活性的影响.
- 为了确定江南白的最佳Ca和CP水平.
主要方法:
- 使用了3x3的因数设计,使用972只,测试了3个Ca水平 (0.32%,0.96%,2.88%) 和3个CP水平 (14.5%,18.5%,22.5%).
- 测量了生长性能 (BW,ADG,ADFI,FCR),营养利用,肠道形态 (维卢斯高度,密室深度) 和消化酶活动.
- 进行了统计分析,以确定饮食治疗的影响及其相互作用.
主要成果:
- 适度的Ca (0.96%) 和CP (14.5-18.5%) 水平最大限度地提高了生长性能 (BW,ADG,ADFI).
- 过度的Ca (2.88%) 对增长和料转换率 (FCR) 有负面影响.
- 最佳的肠道形态和消化酶活性在0.96%的Ca和中度的CP水平下观察到.
- 和CP水平相互作用,增强,和蛋白质代谢,最高利用率为0.96%的和14.5%的CP.
结论:
- 均衡的饮食和原始蛋白质对于的生长,营养吸收和代谢效率至关重要.
- 建议在0.96%的Ca和14.5-18.5%的CP的特定水平,以实现小的最佳表现.
- 这些发现为制定有效的家禽饮食提供了实际指导,以改善生产结果.
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