Mycoplasma synovia is an infection among broilers at an industrial-type poultry farm

Abstract

A method for diagnosing infectious synovitis among young broilers aged 11-12 weeks, obtained from an industrial-type poultry farm, was investigated in laboratory conditions. The experiments were carried out on the basis of the Microbiology Department of the All-Russian Research Veterinary Institute of Poultry Farming - a branch of the VNITIP Federal Research Center of the Russian Academy of Sciences. To perform mycoplasmatological studies, the limbs of birds with pronounced joint damage were selected and a nutrient medium was prepared by adding 20% horse blood serum, 10% yeast extract and 0.5% glucose to Edward's broth. Phenol-mouth at a concentration of 0.0001% was used as an indicator of the medium. As a result of a series of 7 "blind" passages, the appearance of opalescence and precipitation was noted, small transparent colonies were observed on a dense nutrient medium. Thus, the preliminary diagnosis of infectious synovitis (infektious synovitis) of broilers, obtained on the basis of epizootological data, clinical signs and pathoanatomic changes, was fully confirmed by a positive result of mycoplasmatological studies. According to the results, tilan was proposed for the treatment of sick poultry in doses recommended by the manufacturer, and for the prevention of the disease – strict compliance with the norms of bird planting density and indoor microclimate.