Prevalence of mycoplasmal bovine mastitis in California
- PMID: 507492
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Prevalence of mycoplasmal bovine mastitis in California
Am J Vet Res.
1979 Jul.
Abstract
Seven species of mycoplasma plus one or more unknown species were found to cause bovine mastitis in California. Both the frequency of cases and number of species of mycoplasma in samples received at the laboratory have increased from 1976 to 1978. By survey, nearly 4% of samples of bulk tank milk from dairy farms were found to contain mycoplasma of potential pathogenic significance. Acholeplasma laidlawii was frequently isolated from samples both from cows and from farm bulk tanks during wet, rainy weather in the spring of 1978, apparently as contaminants only. The prevalence of positive bulk tank milk samples in an area appeared to parallel the prevalence of clinical mycoplasmal mastitis problem herds.
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