强化养会改变天然放牧雅克的反菌群及其发酵参数
Shichun He1, Zaimei Yuan2, Sifan Dai1
1Key Laboratory of Animal Nutrition and Feed Science of Yunnan Province, Yunnan Agricultural University, Kunming, China.
Frontiers in veterinary science
|April 22, 2024
概括
强化养会改变鱼的微生物群,增加有益的细菌和挥发性脂肪酸,以更好地利用营养和在恶劣的高原环境中生长. 这项研究有助于补充雅克的养策略.
科学领域:
- 动物科学动物科学
- 微生物学 微生物学
- 环境科学 环境科学
背景情况:
- 在高海拔高原上,雅克的生存和繁殖受到低氧,寒冷和营养可用性的挑战.
- 密集养是营养供应的关键策略,显著改变了雅克的肠微生物群.
- 了解这些微生物群的变化对于在极端环境中优化克的营养至关重要.
研究的目的:
- 调查密集养对皮微生物群,发酵参数和雅克在中国云南西北部高原地区的生长的影响.
- 为了比较在自然牧场和密集养条件下雅克之间的肠微生物社区结构.
- 提供关于营养调节的见解,以在补充养期间增强克生长.
主要方法:
- 使用 16S rRNA 和 ITS 测序分析了在自然放牧和强化养下雅克的乳头菌群.
- 使用主要坐标分析 (PCoA) 可视化微生物社区结构差异.
- 使用PICRUSt2分析预测与细菌代谢相关的功能基因丰度.
主要成果:
- 强化养显著改变了肠微生物群落结构,增加了Prevotella的丰富性和真菌的多样性.
- 在密集养下,雅克的非纤维和半纤维降解细菌水平较高,挥发性脂肪酸 (VFA) 的增加.
- 自然放牧的雅克有更高的 Firmicutes, Bacteroidetes 和 Rikenellaceae 的流行率.
结论:
- 强化养诱导了雅克的微生物群的适应性转变,以改善寒冷,高海拔条件下的纤维和能量利用.
- 这些发现为雅克的营养管理和补充养提供了关键的参考.
- 了解这些微生物变化可以有助于增强克的生长和生存.
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