Ukrainian Journal of Veterinary Sciences

Ornithobacterial rhinotracheitis belongs to the group of respiratory diseases, which are currently one of the main problems of the poultry industry, as they lead to significant economic losses due to loss of productivity in the commercial and reproductive stages, deterioration in egg quality, reduced growth and increased culling of broilers. The disease is widespread in Europe, America, Asia and Africa. A large number of types of pathogens, the rapid development of resistance to antibiotics, the difficulties of diagnosis - these factors make it difficult to cure the bird from this disease. Isolation of the pathogen by classical bacteriological methods is an extremely complex process, and the sensitivity reaction to antibiotics of the circulating species takes a long time and does not always give the desired result. But choosing the right chemotherapeutic drug to combat the pathogen is the main condition for successful treatment and the key to the well-being of the herd. For the research, pathoanatomical material was selected from clinically ill birds with signs of respiratory damage.The causative agent Ornitobacterium rinotraheal was isolated bacteriologically.
single study. For diagnostics, molecular genetic studies of tracheal swabs, using the PCR method. Sensitivity to antibiotics of ornitobacteria of rhinotracheal culture, isolated from broiler turkeys were determined by the disk diffusion method. Culture identification was confirmed by biochemical tests. reactions, disks with antibiotics were used. y isolated strains of microorganisms, optimal values ​​of growth retardation diameter susceptibility levels for each antibiotic were taken into account. According to our studies, the circulating type of the agent was found to be sensitive to oxacin (zone of growth inhibition 27.0 mm), oxytetracycline (25.5 mm), amoxicillin (24.0 mM), doxycycline (22.3 mM), tylosin and flortenipolutiamulin - growth inhibition zone 22.0, 21.5 and 18 mm, respectively.

ornithobacteriosis, Ornithobacterium rhinotracheale, tilmicosin, enrofloxacin, ORT