Effects of dual infection of chickens with Mycoplasma synoviae and Mycoplasma gallinaceum or infectious bursal disease virus on infectious synovitis.

Mycoplasma synoviae infection on Newcastle disease vaccination of chickens

Newcastle disease is characterized by respiratory manifestations in association with nervous and/or digestive symptoms. Its prevention is done by vaccination with live attenuated (lentogenic strains) and/or killed vaccines. The lentogenic strains can lead to strong post-vaccination reaction, principally due to the presence of other pathogenic agents. Among them, Mycoplasma synoviae is worldwide...

Resistance to Mycoplasma synoviae is bursal dependent.

Bursectomizing small bursa line birds produced susceptibility to Mycoplasma synoviae. This suggested that M. synoviae is B cell dependent, but does not rule out a T cell effect.

Characterization of a Highly Virulent Infectious Bursal Disease Virus

Mycoplasma synoviae Infection in Chickens By SHIZUO SATO

Disease caused by Mycoplasrna s11noviae, so far called infectious synovitis, shows symptoms such as joint swelling, lameness, pale comb, and retarded growth mainly of chicken and turkey. This disease, first noticed in a broiler raising area of U.S.A., was reported by Olson et al. and Wills in 1954. Since then the disease has been recognized in European countries and South Africa•>. In Japan, al...

Serologic profile of avian leukosis virus subgroup-J, Mycoplasma gallisepticum and Mycoplasma synoviae in broiler grandparent flocks of Iran.

  Avian Leukosis Virus Subgroup-J (ALV-J). Mycoplasma gallisepticum (MG) and MycopJasma synviae (MS) are important pathogens in chickens that cause severe economical losses in poultry industry throughout the world. Seven broiler grandparent flocks of Iran (six broiler strains) were sampled randomly at the ages of 8-63 wk (100 samples from each flock) for antibody detection to ALV-J, MG, and MS ...