Arquivo Brasileiro de Medicina Veterinária e Zootecnia
On-line version ISSN 1678-4162
TEJADA, T.S. et al. Subclinical mastitis caused by Staphylococcus coagulase negative in meet-producing sheep. Arq. Bras. Med. Vet. Zootec. [online]. 2012, vol.64, n.4, pp.1074-1076. ISSN 1678-4162. http://dx.doi.org/10.1590/S0102-09352012000400039.
Microorganisms that cause mastitis were isolated in a herd of sheep and their sensitivity to antimicrobials was tested. Twenty-one sheep had their mammary glands monitored during lactation. Eighty-eight milk sample from CMT-positive sheep were analyzed in order to isolate the etiologic agent of mastitis. Coagulase negative Staphylococcus were isolated from 29.5% of samples. Ampicillin and penicillin were the antimicrobials with higher number of resistant strains. The importance of coagulase negative staphylococci has been demonstrated, especially S. lentus and S. sciuri as a cause of ovine mastitis.
Keywords : coagulase negative; mastitis; sheep; Staphylococcus.