Antimicrobial resistance (AMR) is a growing concern for human and animal health. Public awareness of these issues has contributed to increased demand for organic food. In poultry production, there are 3 major production types: no antibiotic ever, organic, and conventional. Organics have been considered safer alternatives that carry fewer antibiotic-resistant bacteria and have less incidence of stable resistance. In this study, we examined the impact of organic and conventional production practices on the resistance patterns of the intestinal microbiome of chickens. Culture and sensitivity analysis performed on the cecal contents were compared between organic and conventionally grown chickens from identical parent stock collected in July and September. The results demonstrated that Escherichia coli isolated from conventionally produced chickens were significantly more resistant to neomycin (P-value <0.0002) and tetracycline (P-value = 0.0000) when compared with organically produced chickens in the July collection samples. However, there was no significant difference observed between groups in the September samples. These data demonstrate that AMR patterns of E. coli can differ significantly between organic and conventional chickens in the samples, but AMR pattern among E. coli isolates may not be consistent.

抗菌素耐药性（AMR）是人类和动物健康日益关注的问题。公众对这些问题的认识促进了对有机食品的需求增加。在家禽生产中，有3种主要生产类型：从来没有抗生素，有机和常规抗生素。有机物被认为是更安全的替代品，它们携带较少的抗生素抗性细菌，并且稳定抗药性的发生率较低。在这项研究中，我们研究了有机和常规生产方式对鸡肠道微生物组耐药模式的影响。比较了七月和九月收集的相同母本的有机鸡和常规生长鸡的盲肠内容物的培养和敏感性分析。结果表明，大肠杆菌与7月采集的样本中的有机生产的鸡相比，从常规生产的鸡中分离得到的新霉素（P值<0.0002）和四环素（P值= 0.0000）明显更强。但是，在9月的样本中，各组之间没有观察到显着差异。这些数据表明样品中有机鸡和常规鸡的大肠杆菌AMR模式可能存在显着差异，但大肠杆菌分离株之间的AMR模式可能不一致。