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hartman_m_me_botfmvz.pdf: 174408 bytes, checksum: 9511ca024af8f06fe5fae7bb9807b1ea (MD5) === Universidade Estadual Paulista (UNESP) === O presente estudo objetivou determinar a prevalência da mastite ovina, avaliar o perfil microbiológico, perfil de sensibilidade microbiana e estabelecer parâmetros de interpretação diagnóstica mediante os resultados do California Mastitis Test (CMT), análises microbiológicas, contagem bacteriana total (CBT) e contagem de células somáticas (CCS). Estudaram-se 37 ovelhas da raça Bergamácia, durante oito semanas de lactação, avaliando-se 482 amostras de leite. Procedeu-se ao CMT para determinação de mastite subclínica e grau de inflamação glandular mamário. Encaminharam-se amostras de leite reagentes ao CMT ao cultivo microbiano e CBT. A CCS foi avaliada em aparelho eletrônico, em amostras de leite provenientes de úberes sadios e inflamados. Os patógenos isolados foram submetidos ao teste de sensibilidade microbiana para verificação do perfil de sensibilidade. A prevalência de infecção intramamária foi de 11,70%. Observaram-se ao cultivo bacteriológico: Staphylococcus spp. (61,11%), Streptococcus spp. (16,66%), Bacillus spp. (13,89%), Corynebacterium spp. (5,56%) e Serratia spp. (2,78%). Dos antimicrobianos testados, ceftiofur apresentou 80,77% de efetividade, seguido de enrofloxacina (69,23%), gentamicina (69,23%), oxacilina (61,54%) e florfenicol (57,70%). À CBT, constatou-se desenvolvimento bacteriano em amostras de leite procedentes de úberes com mastite, entre 20 e 3.030.000 colônias/mL de leite. A CCS apresentou média de 36.285 células/mL no leite de animais sadios. Nas amostras positivas ao CMT observou-se média de 267.579 células/mL na ausência de microrganismos e 489.400 células/mL em meios mamários com isolamento bacteriano. Infere-se a associação entre positividade ao CMT, presença microbiana e aumento da CCS, ressaltando a importância destes procedimentos no diagnóstico da mastite ovina. === The present study aimed to determine the prevalence of mastitis in the ewes, evaluate the microbiological profile, microbial sensitivity, and to establish the diagnostic interpretation parameters through of the results of the California Mastitis Test (CMT), microbiological analysis, total bacterial count (TBC), and somatic cell count (SCC). Thirty-seven Bergamacia ewes were studied, during eight weeks of lactation, with a total of 482 milk samples. CMT was realized to the determination of the subclinical mastitis and the mammary gland inflammation degree. CMT reacting milk samples was directed to the microbial culture and TBC. SCC was evaluated in an electronic machine, in milk samples from healthy and inflamed udders. The isolated pathogens were submitted to microbial sensitivity test for the verification of the susceptible profile. The prevalence of the mammary infection was 11.70%. To the bacteriological culture was found Staphylococcus spp. (61.11%), Streptococcus spp. (16.66%), Bacillus spp. (13.89%), Corynebacterium spp. (5.56%) and Serratia spp. (2.78%). Of the antimicrobials tested, ceftiofur presented 80.77% of effectiveness, followed for enrofloxacin (69.23%), gentamicin (69.23%), oxacilin (61.54%) and florphenicol (57.70%). To TBC, bacterial development in milk samples from mammary glands with mastitis was evidenced, with 20 to 3,030,000 colonies per milliliter of milk. CCS presented average of 36,285 cells/mL of milk of healthy animals. In positive samples to CMT was observed an average of 267,579 cells/mL in the absence of microorganisms and 489,400 cells/mL in mammary conditions with isolation of bacteria. Thus, we can infer the association among the positivity to CMT, the presence of microorganisms and the increase of SCC, standing out the importance of these analysis in the diagnosis of ovine mastitis.
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