Ocorrência de patógenos causadores de mastite subclínica no município de Jaguapitã, estado do Paraná - Brasil

Soethe, Edivaldo MazieroAffonso, Mauricio ZampronioChaves Neto, Antonio FranciscoNegri Filho, Luiz CarlosBronkhorst, Dalton EvertBogado, Alexey Leon GomelSilva, Luiz Cesar daBarca Junior, Flavio AntonioSantana, Elsa Helena WalterSantos, Marcelo Diniz dosOkano, Werner

The aim of this research was to identify the occurrence of pathogens causing subclinical mastitis in grade B milk farms of the Jaguapitã county, state of Paraná, Brazil. California Mastitis Test (CMT) were carried out in 400 milk samples from 100 animals and 157 teats from 55 animals (55%) were positive, showed score two or higher to CMT. When these 157 positive samples to CMT were transported for bacterial culture in blood agar, 25.48% (40/157) samples showed no bacterial growth or more than two types of bacterial colonies grew, 28.03% (44/157) were Coagulase-negative staphylococci (CNS), 8.28% (13/157) were Streptococcus uberis, 7.64% (12/157) were Staphylococcus aureus, 7.64% (12/157) were Corynebacterium spp, 7.01% (11/157) were Staphylococcus intermedius, 4.46% (7/157) were Staphylococcus hyicus, 3.82% (6/157) were Bacillus spp., 2.55% (4/157) were Streptococcus dysgalacteae, Enterobacteria and Yeasts. We conclude that CNS is the most relevant subclinical mastitis causative agent.(AU)

1. Staphylococcus coagulase-negativa
2. Leite tipo B
3. Coagulase-negative staphylococci
4. Grade B milk.
5. Dairy cattle
6. Bovinos leiteiros
7. CMT