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快速和缓慢生长的肉肠道微生物群组成和胆盐酸酶活性:对生长性能和生产效率的影响

Hye Won Kim¹, Na Kyung Kim¹, Patricia G Wolf²

¹Department of Animal Sciences, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA.

Journal of animal science and biotechnology

|August 2, 2025

概括

高胆汁盐化酶 (BSH) 活性和特定的肠道细菌,如肠杆菌,与肉的较低料摄入量和体重增加有关,影响生长性能.

科学领域:

禽畜科学禽畜科学禽畜科学
微生物学微生物学
动物生理学动物生理学

背景情况:

肉的体重是健康和生产效率的关键指标.
尽管存在统一的管理实践,但 brojler的体重存在变化.
研究肠道微生物群和胆盐酸酶 (BSH) 活性可以解释生长差异.

研究的目的:

为了研究慢生长与快生长的肉肠道微生物群组成和BSH活性.
确定导致 brojler生长变化的微生物和酶因素.
了解肉种群中不同生长速度的生理基础.

主要方法:

分析了来自300只Ross 308肉三队的阴茎,阴茎和阴粘膜样本.
进行了细菌计数,16S rRNA amplicon测序和特定物种实时qPCR.
测量了胆盐化酶 (BSH) 活性,并与生长参数和细菌群体相关联.

主要成果:

慢生长者和快生长者之间的总体细菌数量没有显著差异,但慢生长者CECA的数量更高.
转移微生物群落从E. coli-Shigella在抵达时的主导地位到Candidatus Arthromitus主导地位在25日.
缓慢生长的在第25天显示出总细菌,菌和克洛斯特菌群I种群的显著增加.
与快速生长的 (0.258 ΔOD / 蛋白质) 相比,在生长缓慢的 (0.476 ΔOD / 蛋白质) 中观察到显著更高的BSH活性.
BSH活动与体重,料摄入量,体重增加和细菌数量有显著的相关性.

结论:

总细菌和菌的大量存在,加上BSH活性升高,可能导致减少料摄入量和体重增加.
这些微生物和酶因子被认为是观察到的分离到缓慢和快速生长的肉的驱动因素.
研究结果提供了关于肉肠道微生物群与宿主生理关系的见解,这对提高家禽生产效率有意义.

关键词:

胆盐酸酶的活性是胆盐酸酶.肉肉肉肉肉肉快速增长的快速增长的我们的肠道微生物群.增长缓慢,增长缓慢的人.

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