Étude Sur La Prevalence De Streptococcus Agalactiae et Staphylococcus Aureus Dans Les Troupeaux Du Quebec Par La Culture Séquentille Du Reservoir
DOI:
https://doi.org/10.21423/aabppro19926658Keywords:
milk production, mastitis control practices, dry cow therapy, teat dipping, S. agalactiae, S. aureus, farm managementAbstract
This study was done on 325 dairy farms in Quebec, Canada to estimate S. agalactiae and S. aureus herd infection prevalence and their impact on milk production and quality. A maximum of 3 bulk tank milk sample were collected in each selected farm for bacteriology and somatic cell counting. A questionnaire for evaluation of farm management and mastitis control practices was administered during the first visit. The study reveals a herd infection prevalence for S. agalactiae and S. aureus of 43% and 93.4% respectively; 4.7% are negative to both bacteria. Adoption on a regular basis of teat dipping of all cows and blanket dry cow therapy is 60.8% and 34% respectively. The high prevalence results for S. agalactiae and S. aureus and the poor adoption of basic mastitis control practices give us a basis to improve upon with a mastitis control program.
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