死亡性肠炎会影响非精选的传统和现代肉类品种的骨生长和骨微观结构
Doyun Goo1, Milan K Sharma1, Dima L White1
1Department of Poultry Science, University of Georgia, 110 Cedar street, Athens, GA, 30602, United States.
Poultry science
|June 4, 2025
概括
结核性肠炎 (NE) 负面影响的骨健康,无论遗传菌株. 现代肉可能面临骨质的恶化,原因是NE挑战增加的多孔性和骨体积比率降低.
科学领域:
- 动物科学动物科学
- 家禽遗传学 家禽遗传学
- 鸟类病理学 鸟类病理学
背景情况:
- 现代肉的生长效率提高,但骨健康受到损害.
- 由Clostridium perfringens引起的死肠炎 (NE) 是一种重要的家禽疾病,影响矿物质吸收和生存.
- 对生长的遗传选择和对骨发育的NE敏感性之间的相互作用需要研究.
研究的目的:
- 为了研究结核性肠炎 (NE) 挑战对两种不同的品种的骨健康的影响:传统的雅典加拿大随机品种 (ACRB) 和现代的Cobb 500.
- 为了评估NE感染严重程度和肉骨参数之间的关系.
主要方法:
- 一项2x3因数研究涉及两个品种 (ACRB和Cobb 500) 和三个NE挑战组 (对照组,NE1: 2,500个卵囊,NE2: 12,500个卵囊).
- 被接种了Eimeria maxima和Clostridium perfringens的疫苗,以诱导NE.
- 评估了骨健康参数,包括矿物质附加率,组织体积,骨体积,骨矿物质含量,骨矿物质密度和皮质骨体积比率.
主要成果:
- 与ACRB相比,Cobb 500的体重和体重增加优越,但NE挑战 (NE2) 减少了Cobb 500的体重增加.
- 与Cobb 500相比,ACRB的身体组成较差,股骨发育 (矿化,体积,含量) 减少.
- 在两种菌株中,NE挑战显著降低了骨矿物质含量,骨面积和股骨体积,而Cobb 500则显示骨矿物质密度降低和皮层孔隙度增加.
结论:
- 死性肠炎会对骨发育产生负面影响,不论的品种如何.
- 现代的肉类 (Cobb 500) 可能更容易受到骨健康恶化的影响,其特点是皮层多孔性增加和骨体积比率降低,当受到NE的挑战时.
- 快速生长的遗传选择可能会加剧NE对肉骨健康的负面影响.
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