用不同度的维生素A补充饮食养肉的性能和骨特性
Vaneila D L Savaris1, Paulo C Pozza2, Clauber Polese1
1Western Paraná State University-Marechal Cândido Rondon, Cascavel, Paraná, Brazil.
Journal of animal physiology and animal nutrition
|October 3, 2023
概括
牛肉的最佳维生素A补充可以促进生长和料转化. 适当的水平改善了体重增加和料摄入量,对科布500的器官重量和骨特征产生了积极影响.
科学领域:
- 动物科学动物科学
- 禽类的营养 养
- 鸟类生理学 鸟类生理学
背景情况:
- 维生素A对于肉的健康和表现至关重要.
- 了解最佳补充水平对于高效的家禽生产至关重要.
- 以前的研究表明,肉对维生素A的反应不同.
研究的目的:
- 为了评估不同维生素A补充剂水平对 brojler性能的影响.
- 评估对器官重量,骨和皮肤特征的影响.
- 为了确定21岁和42天的Cobb 500肉的最佳维生素A水平.
主要方法:
- 使用了一种随机设计,使用了1920年的Cobb 500肉.
- 测试了六种维生素A水平 (0-46,000 IU/kg),其中一半的鸟类在22天后退出阶段.
- 性能,器官重量和骨/皮肤特征在21天和42天被测量.
主要成果:
- 维生素A水平在21天内显著影响了料摄入量 (FI) 和体重增加 (BWG).
- 在21天以28209 IU/kg维生素A达到最佳的BWG.
- 补充到42天显示了BWG,FI和料转换的二次反应,BWG的最佳水平约为29.375 IU/kg,料转换的最佳水平为27.775 IU/kg.
结论:
- 适当的维生素A补充剂对肉的表现和生理特征产生积极影响.
- 在Cobb 500肉中确定了BWG和料转换的特定最佳水平.
- 持续补充至42天是有利于整体肉的发展和效率.
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