微藻的食补充可以减轻肉热应激对肉的负面影响
Ajay Chaudhary1, Pravin Mishra1, Sadid Al Amaz1
1Department of Human Nutrition, Food and Animal Sciences, College of Tropical Agriculture and Human Resources, University of Hawai'i at Manoa, Honolulu, HI 96822, USA.
Poultry science
|August 4, 2023
概括
食微藻补充改善了热应激 brojlers 的生长和健康. 这项研究表明,微藻类增强了抗氧化能力,肠道健康和有益的肠道细菌,减轻了家禽的热应激影响.
科学领域:
- 动物科学动物科学
- 禽类的营养 养
- 环境生理学环境生理学
背景情况:
- 热应激会对家禽的健康和生产力产生负面影响.
- 富含抗氧化剂的化合物对于家禽饮食中的氧化还原平衡至关重要.
- 微藻 (Spirulina platensis) 以其抗氧化特性和健康益处而闻名.
研究的目的:
- 调查微藻补充对热应激 brojlers 的健康和生产的影响.
- 了解微藻在热应激家禽中的作用的基本机制.
主要方法:
- 科布500肉幼被分为三个组:没有热应激 (NHS),热应激 (HS) 和热应激3%的微藻 (HS+MAG).
- 从第22天到第35天,热应激循环诱导.
- 分析了生长表现,叶基因表达 (抗氧化剂,免疫,紧密结合),肠道形态和肠道微生物群.
主要成果:
- 微藻补充剂显著增加了热应激肉的最终体重.
- 在微藻中观察到,质抗氧化剂 (GPX3),免疫相关 (IL4) 和紧接 (CLDN2) 基因的表达增加.
- 在HS+MAG组中,改善了状的高度与密室深度的比率,并增加了肠道微生物多样性 (α和β).
- 在微藻补充的鸟类中观察到挥发性脂肪酸产生细菌属的增加.
结论:
- 食微藻补充剂有效地减轻肉的热应激.
- 微藻通过增强生理遗传学方面来提高生长性能,包括抗氧化状态,肠道完整性和微生物群组成.
- 微藻是一种有希望的饮食策略,可以提高家禽对热应激的抵抗力.
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