能量水平和素,和对 brojler 营养素消化能力和性能进行调整
Victor Emanuel M Feitosa1, Camilla M Silva1, Valdir Ribeiro Júnior2
1Federal University of Sergipe, Animal Science Department, Av. Marechal Rondon, s/n, Jardim Rosa Elze, 49100-000 São Cristóvão, SE, Brazil.
Anais da Academia Brasileira de Ciencias
|September 20, 2023
概括
增加饮食代谢能量 (ME) 和调整素,和等营养素可以显著改善肉的消化能力和营养利用率. 这会提高鸟类的整体性能和更好的料转换比率 (FCR).
科学领域:
- 动物科学动物科学
- 禽类的营养 养
- 动物生理学 动物生理学
背景情况:
- 优化 brojler 营养对于高效的肉类生产至关重要.
- 了解能量水平和特定营养调整之间的相互作用是提高料利用率的关键.
研究的目的:
- 评估不同代谢能量 (ME) 水平,有或没有特定的营养调整对肉消化能力和性能的影响.
- 确定最佳的饮食策略,以提高肉的营养利用和生长.
主要方法:
- 一个3x2+1的因数排列,使用210只雄性Cobb 500肉进行消化性试验.
- 包括三个ME水平 (3050,3125,3200千卡/千克) 与没有调整的可消化素,和可用的,以及对照 (2975千卡 ME/千克).
- 用1120只鸟用于初始评估和1008只鸟用于最终评估来评估性能,每次治疗有多次复制.
主要成果:
- 干物质消化能力 (DCDM) 和原蛋白消化能力 (DCCP) 随着 ME 和营养调整的增加显著改善 (P<0.05).
- 总能量 (GE) 消化能力也因更高的ME和营养调整而得到改善.
- 增加的能量水平对最终料转换比率 (FCR) 产生了积极影响,达到1.370,而能量和营养调整对最终性能没有显著的相互作用.
结论:
- 增加饮食代谢能量密度,加上适当的营养调整,显著改善肉的营养消化能力和利用率.
- 这些营养策略会提高鸟类的整体性能,特别是料转换效率.
- 这些发现支持通过平衡能量含量与必需营养素来优化肉饮食,以改善生产结果.
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