The use of antibiotics and antimicrobials drugs without control may lead to the development of numerous complications and resistance of microorganisms to antibiotics. Using antibiotics and antimicrobials drugs should be controlled on farms. That is why the monitoring and determination of sensitivity of bacterial diseases agents to antimicrobial drugs are very important. The results of pasterella, of salmonellas’ and kolibakterias’ monitoring in Azerbaijanian farms are presented in the article. Microbiological monitoring of a number of farms in Azerbaijan has shown that agents of bacterial diseases are widely spread. Between the isolated pasterella agent largest number were accounted for Salmonella (54.1%) and the Escherichia (30.8%). The rest (15,1%) were isolated cultures of Proteus, Pseudomonas, Klebsiella, Salmonella, Campylobacteria, Enterobacteria, and Clostridia Citrobacter. This indicates that systematic control over the availability of the causative agents of bacterial infections in all critical points of farms is necessary. Among isolates that were isolated from ill calves and objects, differences in their sensitivity to antimicrobial agents from active substances that officially have registered in our country were discovered. Bactericidal activity of relatively isolated cultures was showed by oxitetraciklin, colistin, ftorfenicol, zeftiocur, doxicyclin, enroxil and sarafloxacin.