ABSTRACT: Antimicrobial sensitivity and pathogenicity level of 90 strains of Escherichia coli isolated from livers and intestines from commercial layer hens presenting diarrhea were analyzed. To evaluate the antimicrobial susceptibility. all samples were subjected to antimicrobial susceptibility testing using 11 commercial drugs. The results have showed none of the strains was suscept... https://www.bekindtopets.com/great-pick-Rx-Arovyn-tulathromycin-Injectable-Solution-for-Swine-Cattle-big-savings/