莱索酶和细菌细菌可以改善生长性能,营养利用,生理应激指数,肠道完整性和热应激肉的基因表达
Ahmed M Elbaz1, G S Ramadan2, Ahmed Ateya3
1Animal and Poultry Nutrition Department, Desert Research Center, Cairo, Egypt.
Scientific reports
|November 12, 2025
概括
用Bacillus subtilis和lyszyme补充肉饮食可以在热应激期间改善生长,免疫力和肠道健康. 这种料添加剂组合增强肉的肉.
科学领域:
- 禽畜科学 禽畜科学 禽畜科学
- 动物营养 动物营养
- 免疫学 免疫学 免疫学
背景情况:
- 热应激会对肉生长,免疫力和肠道健康产生负面影响.
- 料添加剂可以减轻这些不良影响.
- 莱索酶和细菌素以其在动物生产中的有益特性而闻名.
研究的目的:
- 研究酶和Bacillus subtilis补充剂对热应激肉的影响.
- 评估它们对生长表现,脂质谱,免疫反应,肠道完整性和基因表达的影响.
主要方法:
- 600只一天大的公肉 (Ross 308) 被分为四组:对照组,细菌细菌 (B.S),溶酶 (LYS) 和组合组 (BSLY).
- 每天将鸟类暴露在33°C的温度中4小时,以诱导热应激.
- 分析了生长指数,脂质概况,免疫参数,肠道形态和基因表达.
主要成果:
- 与对照组相比,BSLY组表现出明显更高的体重增加和更好的料转换率.
- 补充剂对尸体特征,营养物质消化能力和脂质特征 (降低胆固醇,增加HDL) 有积极的影响.
- 免疫反应 (IgG,IgM,Fabricius的重量) 和肠道完整性 (小肠的高度,有益细菌的数量) 被BSLY和BS增强.
- 调节了IGF1,SOD,GPx和IFN-γ的基因表达,在BSLY组中观察到对SOD和IGF1的影响最大.
结论:
- 结合Bacillus subtilis和lyszyme在改善热应激肉的生长性能,免疫功能和肠道健康方面是有效的.
- 这种料添加剂策略通过调节关键的生理和分子通路来增强肉对热应激的抵抗力.
- 这些发现支持使用B. subtilis-lysozyme混合物作为在具有挑战性的环境条件下在家禽生产中可行的工具.
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