Contagious agalactia of sheep and goats in Apulia and Basilicata.
Between April 1985 and February 1988, 146 Mycoplasmatales strains were isolated from 500 milk samples collected from sheep and goat flocks and herds suspected of contagious agalactia; 19 (13%) were Acholeplasmataceae and 127 (87%) Mycoplasmataceae. Of the latter, 84 (66.1%) were M. agalactiae, 34 (26.7%) M. capricolum, 3 M. mycoides subsp. mycoides LC or subsp. capri, and 6 were not classified. M. arginini was not isolated, although known to occur in Puglia as an agent of ovine pleuropneumonia. Of the M. agalactiae isolations 32.4% were associated with typical contagious agalactia, 22.9% with mastitis alone, 34.5% with mastitis and arthritis, and 3.3% with mastitis and keratitis. Two forms of M. capricolum infection were recognized: one hyperacute with high morbidity and mortality, the other acute but without mortality. M. mycoides subsp. capri was associated with 15% mortality of adult goats and 100% mortality of kids.