营养密度和品种对肉生长表现和肠道微生物群的互动影响
Meiting Jia1, Jiaqi Lei1, Yuanyang Dong2
1State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
Animals : an open access journal from MDPI
|December 17, 2024
概括
肉的品种差异影响了对低营养饮食的生长和肠道微生物群反应. 阿伯 (AA) 肉生长更好,但对营养密度较低更容易受到影响,而北京 (BY) 通过增加料摄入量来适应.
科学领域:
- 动物科学动物科学
- 微生物学 微生物学
- 营养科学 营养科学
背景情况:
- 肉品种表现出不同的生长性能和营养利用.
- 肠道微生物群在宿主健康和营养代谢中起着至关重要的作用.
- 了解特定品种对饮食挑战的反应对于优化家禽生产至关重要.
研究的目的:
- 调查品种特定生长变化与低营养饮食下的肠道微生物群调节之间的联系.
- 为了比较Arbor Acres (AA) 和Beijing-You (BY) 的肉的生长性能,肠道发育和体/体微生物群,它们被养高 (HN) 和低营养 (LN) 饮食.
- 分析肠道微生物群组成的时间变化,以应对饮食中的营养密度.
主要方法:
- 在Arbor Acres (AA) 和北京-You (BY) 肉中,从第0天到第42天,它们被养高 (HN) 和低营养 (LN) 饮食.
- 记录了体重,料摄入量,料转换比率 (FCR) 和平均每日增益 (ADG).
- 在第7天,第21天和第42天进行了肠道测量,并在第7天,第21天和第42天收集了阴茎和阴茎消化液,用于微生物群分析.
主要成果:
- 与BY相比,AA肉表现出优越的生长性能 (较高的ADG,较低的FCR).
- LN饮食通过肠道发育受损对AA肉生长产生了负面影响,而BY通过增加料摄入量来补偿.
- 微生物群的组成主要受到品种的影响,AA肉含有更多有益的细菌,而BY含有更多短链脂肪酸 (SCFA) 生产细菌.
- LN饮食诱导了肠道微生物群的动态变化,最初减少了有益细菌,后来丰富了SCFA生产和抗炎性基因,可能会随着时间的推移不同影响肠道健康和脂质沉积.
结论:
- 由于肠道发育受损,Arbor Acres肉更容易受到低营养密度的影响,而北京-你通过增加料摄入量表现出更好的适应性.
- 肠道微生物群的组成是区分肉品种对营养密度反应的重要因素.
- 在低营养条件下的微生物群转变的时间动态表明,在早期肠道健康和晚期生长和脂质代谢之间存在潜在的权衡.
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