(Gelsemium elegans) 提取物粉末通过免疫-肠道微生物群协同机制减轻肉的高种群密度相关的不良影响
Xiao-Qing Xu1, Yi-Rong Wang1, Dan-Dan Guo1
1College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan 410128, China; Hunan Engineering Technology Research Center of Veterinary Drugs, Hunan Agricultural University, Changsha, Hunan 410128, China.
Poultry science
|January 29, 2026
概括
高种群密度会伤害肉,但0.06%的Gelsemium elegans提取物 (GEE) 可以改善生长,免疫力和肠道健康. 较高的GEE剂量是有害的,这表明压力下 brojlers的特定有效剂量.
科学领域:
- 动物科学动物科学
- 禽类的营养 养
- 兽医医学 兽医医学 兽医医学
背景情况:
- 高种群密度 (HSD) 对肉生长和生理功能产生负面影响.
- 在家禽中,Gelsemium elegans提取物 (GEE) 的潜在益处正在被探索.
- 了解最佳的GEE补充对于HSD下的肉福利至关重要.
研究的目的:
- 为了研究不同剂量的Gelsemium elegans提取物粉 (GEE) 对受到高养殖密度 (HSD) 的 brojlers的影响.
- 确定最佳的GEE剂量,以减轻HSD引起的压力,并改善肉的表现和健康.
主要方法:
- 78只一天大的雄性黄羽肉被分配到五个组:正常养殖密度 (NSD),HSD和HSD,GEE为0.06%,0.12%或0.6%.
- 评估了生长表现,免疫器官指数,血清皮质,肠道形态和肠道微生物群组成.
主要成果:
- HSD显著损害了 brojler 的生长和生理功能.
- 0.06% GEE (200 mg/kg饮食) 显著改善了生长,逆转了免疫器官抑制,降低了皮质,修复了肠道损伤,并平衡了肠道菌群 (降低了Firmicutes/Bacteroidetes比率).
- 较高的GEE剂量 (0.12%和0.6%) 抑制了生长,与异常的肌静止素表达有关.
结论:
- 摄入0.06% GEE (200 mg/kg饮食) 的食补充剂是有效和安全的,可以改善HSD下的 brojler生长和生理功能.
- 0.06%的GEE的有益作用归因于皮质降低,免疫力增强,肠道修复和肠道微生物群调节.
- 最佳的GEE剂量至关重要;较高的度可能对肉生长有害.
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