在生长过程中评估科布700基因型的体内和成分
F Salisbury1, R M Gous2, A J Cowieson3
1Department of Animal Science, University of Pretoria, Pretoria, South Africa.
British poultry science
|October 9, 2024
概括
这项研究测量了科布700只肉的和. 结果表明,目前的饮食指导方针可能会限制肉骨矿物沉积潜力.
科学领域:
- 动物营养 动物营养
- 禽畜科学 禽畜科学 禽畜科学
- 矿物质的新陈代谢.
背景情况:
- 对矿物质积累的准确建模对于优化肉营养至关重要.
- 了解体内蛋白质和矿物质含量之间的关系是成长研究的关键.
研究的目的:
- 为了量化Cobb 700肉从化到15周的和沉积量.
- 为了建立体内蛋白质和矿物质含量之间的全度关系.
- 将发现与现有文献进行比较,并评估当前的饮食指南.
主要方法:
- 在400只雄性和400只雌性Cobb 700肉的养试验中,使用了四阶段养计划.
- 在多个时间点 (0-105天) 每周对鸟类进行称重和采样.
- 对剥皮,冷干燥的尸体进行蛋白质,灰,和含量的分析.
主要成果:
- 在105天后,男性的平均含量为54g Ca和35g P;女性的平均含量为37g Ca和27g P.
- 灰沉积与身体蛋白质是同度的;和显示了全度增长 (指数>1).
- 对Ca和P相对于体内的蛋白质进行了全度模型的开发,并与文献进行了比较.
结论:
- 现代肉可能无法在当前的饮食建议下实现最佳的骨矿物质积累.
- 度关系为模拟肉体中和的生长提供了一个框架.
- 进一步研究饮食中的矿物质要求,以最大限度地提高骨矿化,是有必要的.
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