Practical view at respiratory diseases in poultry caused by mycoplasma synoviа

Mycoplasmosis in poultry industry is a world-wide problem. Even though vaccines and antibiotics generally keep Mycoplasma gallisepticum under control and protect broiler parent flocks, laying hens and broiler chickens, the problem of respiratory diseases caused by Mycoplasma spp. still exists. Moreover this problem induces economic losses at poultry farms. The expansion of M. Synoviae has taken a leadership role among pathogens causing respiratory and joint pathology (infection of synovium) in poultry. The infection is often subclinical and complicated by other respiratory pathogens. M. Synoviae is spread vertically and horizontally, the pathogen can affect 100% of poultry. One of the poultry farms in the Central Region tested inactivated vaccines (MS-NEV1 and MS-NEV2 strains) on broiler parent flock. A ground for testing was positive laboratory data obtained from the monitoring of broiler parent flock within the current 6 months. The test gave positive results on M. synoviae, PCR detected the genome of M. synoviae. Two broiler parent flocks at the age of 40 and 90 days were vaccinated with the inactivated vaccines (MS-NEV1 and MS-NEV2 strains). The vaccination prevented vertical spread of the pathogen. That was confirmed by the fact that the broiler chickens, obtained from the vaccinated flocks, had no clinical signs of respiratory and joint diseases. The test indicates the need to vaccinate broiler parent flocks with the inactivated vaccines against M. Synoviae. The vaccination provides effective protection of parent flocks and prevents the vertical spread of the pathogen.

микоплазмоз, вакцинация, родительское стадо, бройлеры, Mycoplasma synoviae, инактивированная вакцина, poultry, mycoplasmosis, Mycoplasma gallisepticum, Mycoplasma synoviae, vaccination

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