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甲基因组分析显示,在各种家禽养殖模式中,抗生素耐药性和传播风险存在差异

Yanru Huang¹, Shuaizhou Zong¹, Dingting Xu²

¹Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, Zhejiang, People's Republic of China.

The Science of the total environment

|April 29, 2025

概括

与单一养殖系统相比,集成家禽养殖场表现出更高的细菌耐药性和复杂的抗生素耐药性基因. 这项研究强调了多样化的农业中的风险,这对于控制抗微生物药物耐药性传播至关重要.

科学领域:

环境微生物学环境微生物学
抗微生物耐药性抗微生物耐药性
基因组学就是基因组学.

背景情况:

越来越多的需求多样化的农业模式超出单一种植.
在集成和单一养殖家禽养殖中对细菌耐药性和传播风险的理解有限.
需要研究农业系统中抗生素耐药性机制.

研究的目的:

为了比较单种养殖和综合家禽养殖模型之间的细菌耐药性和传播风险.
分析抗生素耐药性基因的分布和传播,特别是blaNDM.
为了研究等离子体介导的blaNDM的水平传播机制.

主要方法:

来自六家家禽养殖场的环境和唾液样本的metagenomic分析.
在不同种植模式中比较微生物组成和抗生素耐药性概况.
抗生素耐药性基因和等离子体的识别和表征.

主要成果:

综合家禽养殖场表现出比单种养殖场更复杂的微生物群落和更强的抗生素耐药性.
在集成农场中发现了一个具有复杂结合转移区域的blaNDM阳性等离子体 (pndm-CD).
特定的插入序列 (ISCR1,IS26) 和基因结构与增强的耐药性和细菌竞争力有关.

结论:

综合农业系统可能会造成抗生素耐药性由于复杂的微生物环境而传播的风险更高.
了解像ISCR1这样的遗传元素和复杂的等离子体结构是管理blaNDM传播的关键.
这些发现为控制混合农业中的抗菌素耐药性和确保食品安全提供了基础.

关键词:

在 ARG 中,有 ARG 的存在.在 ARM 的 ARM 里.农业模式农业模式禽类的环境禽类的环境这是唾液.

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