[Studies of bovine Mycoplasma mastitis. 4. Serological classification of Mycoplasma strains isolated from 3 stocks].

Thirty-two isolates from altered milk samples taken from cows with mastitis of two herds were serologically tested by the WHT against rabbit hyperimmune sera of 16 reference and type strains. The strains tested were associated and grouped in the following way: 16 M. bovis, nine A. laidlawii, and seven A. axanthum. The classification of on M. bovis strain was confirmed by SHT. Five isolates from another stock, with biochemical properties related to the family of mycoplasmataceae, were not serologically identified.