复合生物工程蛋白在高温条件下改善肉的生长性能和肠道健康
Shenggang Yin1, Liuzhen Su2, Quanjun Shao1
1Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, of Ministry of Agriculture and Rural Affairs, of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China.
Journal of animal science
|November 6, 2023
概括
复合生物工程蛋白 (CBP) 补充剂在热应激下改善了 brojler 的生长和肠道健康. CBP增强了抗氧化能力,肠道屏障功能和有益细菌,其中750 mg/kg是最有效的.
科学领域:
- 动物科学动物科学
- 禽类的营养 养
- 环境压力生理学生理学
背景情况:
- 高环境温度对全球的家禽生产产生负面影响.
- 热应激会影响肉的生长,免疫力和肠道健康.
- 复合生物工程蛋白 (CBP) 是一种潜在的料添加剂,可以减轻热应激效应.
研究的目的:
- 研究饮食中复合生物工程蛋白 (CBP) 在高环境温度下对肉生长性能和肠道健康的疗效.
- 确定CBP的最佳剂量,以提高肉对热应激的抵抗力.
- 阐明CBP调节抗氧化能力,肠道屏障功能和免疫反应的机制.
主要方法:
- 400只Arbor Acres肉在42天的时间里被食,补充了0,250,500,750或1,000毫克/公斤CBP.
- 鸟类在前21天经历了热中性条件,随后在22-42天经历了热应激 (32°C ± 2°C).
- 评估了生长表现,血清生物化学参数,肠道形态,抗氧化酶活性,炎症性细胞因子水平和菌群.
主要成果:
- 补充CBP显著改善了生长性能和血清抗氧化能力 (总抗氧化能力,超氧化物脱酶).
- CBP增强了肠道屏障功能,降低了肠道透性 (二胺氧化酶),并改善了十二指肠和阴中的抗氧化剂状况.
- 通过调节互白素 (IL) -6,IL-10和干扰素- (IFN-γ) 表达和增加有益细菌 (乳酸菌) 的表达,CBP减轻了肠道炎症.
- 750 mg/kg的CBP剂量显示出最显著的积极影响.
结论:
- 在高温条件下,饮食中的CBP有效地提高肉生长性能和肠道健康.
- CBP通过提高抗氧化能力,加强肠道屏障,调节免疫反应和促进有利的肠道微生物群来起作用.
- 建议补充750mg/kg的CBP,以优化热应激期间的肉产量.
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