开始饮食能量度对营养消化能力和随后的生长性能以及在两个菌病控制计划下肉类产量的影响
Alyson G Myers1, Samuel J Rochell1,2
1Department of Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA.
Animals : an open access journal from MDPI
|June 19, 2024
概括
肉中菌病疫苗接种对营养物质的消化能力和性能产生负面影响,特别是当与更高能量的初始饮食相结合时. 对于接种疫苗的鸟类来说,增加食脂质可能会加剧性能问题.
科学领域:
- 禽畜科学 禽畜科学 禽畜科学
- 动物营养 动物营养
- 鸟类健康 鸟类健康
背景情况:
- 菌病显著影响肉的表现和营养利用.
- 目前的菌病控制计划 (CCP) 包括在料中的药物或疫苗接种.
- 饮食中的能量水平,特别是脂质含量,影响营养消化能力和肉生长.
研究的目的:
- 评估两种菌病控制计划 (进食迪克拉祖里尔与疫苗接种) 和三种初始饮食能量水平对 brojler 的性能,加工特性和营养消化能力的影响.
- 确定CPC和饮食能量之间的潜在相互作用对肉的结果.
主要方法:
- 设计了一个因数实验,使用两个CCP (ACD与VAC) 和三个初始饮食明显代谢能量,校正 (AMEn) 水平 (3008,3058,3108卡路里/公斤).
- 肉从0-18天开始接受实验性初始饮食,随后接受普通种植者和完成者饮食,直到43天.
- 测量包括排泄物卵囊数,血类胡卜素,营养和能量明显的乳腺消化能力 (AID/IDE),体重增加,料转化率 (FCR) 和尸体产量.
主要成果:
- 接种疫苗的 (VAC) 肉在第11天显示出较高的卵囊数量和较低的营养/能量AID,与接受进食迪克拉祖里尔 (ACD) 的肉相比.
- VAC对体重增加和FCR增加产生了负面影响,特别是在食中等和高能量的初始饮食的鸟类中.
- 总体而言,VAC鸟类的尸体产量较低,对翅膀产量观察到显著的相互作用.
结论:
- 与预期相反,菌病疫苗 (VAC) 可能会损害营养消化能力和肉的整体表现.
- 对于接种疫苗的 brojlers,在初始饮食中增加食脂质度可能会加剧负面的性能影响.
- 选择菌病控制计划和食能量密度需要仔细考虑,以优化肉生产.
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