维生素D3的要求和相对生物可用性对于开始的雄性白皮金,食了胆酸或25-基胆酸
Jing Tang1, Lei Zhuang1, Yating Li1
1State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
Poultry science
|November 24, 2024
概括
饮食中补充维生素D3 (VD3) 或25-hydroxycholecalciferol (25-OH-D3) 可以改善子的生长和骨健康. 25-OH-D3在较低度下表现出比VD3更高的疗效,这表明它对佩金的生物利用性更好.
科学领域:
- 动物营养 动物营养
- 禽畜科学 禽畜科学 禽畜科学
- 生物化学 生物化学
背景情况:
- 维生素D对于代谢和家禽的骨健康至关重要.
- 了解维生素D3 (VD3) 和其代谢物25-hydroxycholecalciferol (25-OH-D3) 的比较疗效对于优化子营养至关重要.
- 维生素D缺乏会导致腿部异常和年轻的表现下降.
研究的目的:
- 为了评估不同饮食度的VD3和25-OH-D3对成长,VD3状态,代谢和骨矿物化的影响,初级雄性白皮金.
- 为了确定Pekin的VD3和25-OH-D3的食要求和相对生物可用性.
- 与VD3相比,评估25-OH-D3在预防腿部问题和死亡率方面的有效性.
主要方法:
- 一项为期21天的食试验,涉及624只雄性白皮金子,被分配给13种饮食治疗.
- 治疗包括负对照 (没有维生素D) 和6种添加VD3或25-OH-D3的度 (1002000 IU/kg).
- 评估了生长性能,尸体特征,血25-OH-D3和,以及骨矿化参数.
主要成果:
- 与负面对照相比,补充VD3或25-OH-D3显著改善了所有测量参数,预防了腿部疾病和死亡率.
- 无论是VD3还是25-OH-D3,都以剂量取决的方式增强了生长,料摄入量,血和部特征.
- 与VD3相比,在100和200 IU/kg时,25-OH-D3导致了优异的生长,血和部发育,这表明疗效更高.
结论:
- 充分补充VD3或25-OH-D3对于预防健康问题和促进北京的最佳生长和骨发育至关重要.
- 在较低的饮食水平下,25-OH-D3比VD3更有效,为生长和骨完整性提供潜在的好处.
- 对于VD3 (281633 IU/kg) 和25-OH-D3 (119395 IU/kg) 的确定的饮食需求为料配方提供了宝贵的见解,25-OH-D3的相对生物利用率为186%.
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