Navegando por Assunto "Mastite bovina"

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Mastite bovina em rebanhos leiteiros no município de Parauapebas, mesorregião sudeste do estado do Pará
(Universidade Federal do Pará, 2008-03-11) BARROS, Bruno de Cássio Veloso de; FREITAS, José de Arimatéa; http://lattes.cnpq.br/2382745365421156
The mastite in its subclinica form is the responsible one for the biggest losses of milk production representing raised economic damages. With the objective to study the etiology of the bovine subclinica mastite in the city of Parauapebas-Pará, they had been submitted to California Mastitis test. - CMT 174 (8.4%) cows in its majority crossbred, pparently healthful of 15 located milk properties in the related city, situated in the Southeastern Mesorregião of the state of Pará. ++ were observed that 84 (48.33%) animal ones had presented resulted of +, +++ to the CMT. The milk of each ceiling that had reacted to the CMT in a total of 178 samples was analyzed bacteriologically aiming at the isolation and the identification of the microorganisms, had been analyzed the macrocospic, microscopical characteristics and biochemists of the isolated cultures. Of the total of samples 208 had been isolated cepas of microbianos agents in pure cultures or in associations being all proceeding ones from mamitico milk, of which 141 (67.79%) cepas was positive coconuts Gram S.aureus (29%) and S.epidermidis (19.14%) and 67 (32.21%) were enterobactérias. Among the enterobacterias they had been distinguished Pseudomonas sp.com 12 (17.91%) cepas esisoladas, Citrobacter sp. with 12 (17.95%) cepas and Shigella sp. with 10 (14.92%), Others 15 cepas of enterobacterias that had not been identified. The isolation of the agents presented significant variation, therefore the comments had been considered how much to the handling of it milks of the studied animals, the sanitary hygienical conditions of the attainment of milk through the application of a questionnaire aiming at the comment of the following 0 variable: creation system, handling adopted in the property, hygiene and level of exposition, infecciosidade of the isolated agents what it reaffirms the complexity of the infection in the area of study and its multifactorial aspect, needing the investment on the part the agencies fiscalizadores of better you practise of hygiene and attainment in the activity of milk exploration.
Acesso aberto (Open Access)
Prevalência e etiologia da mastite bovina na bacia leiteira de Rondon do Pará, estado do Pará
(2011-02) OLIVEIRA, Carlos Magno Chaves; SOUSA, Melina Garcia Saraiva de; SILVA, Natália da Silva e; MENDONÇA, Carla Lopes de; SILVEIRA, José Alcides Sarmento da; OAIGEN, Ricardo Pedroso; ANDRADE, Stefano Juliano Tavares de; BARBOSA NETO, José Diomedes
The prevalence and the etiology of bovine mastitis in the dairy region of the county of Rondon of Pará were investigated. The sensibility and the resistance of the isolated agents to the antimicrobiotics was evaluetad; 237 mixed-bred milk cows were used on nine properties, which were hand milked once a day and kept on Brachiaria brizantha pasture, with supply of mineral salt and water ad libitum. Clinical examination of the mammary gland, the test of the sieve and California Mastitis Test were performed. Of the 935 examined mammary quarters, 6.6% had subclínical mastitis, 1.3% clinical mastitis, and 92.1% were negative. The isolated bacteria in the clinical mastitis were coagulase negative Staphylococcus spp. (25%), Staphylococcus aureus (16.7%), Streptococcus spp. (8,3%), and Corynebacterium spp. (8.3%). In the subclínical mastitis coagulase negative Staphylococcus spp. (32.3%), Staphylococcus aureus (17.7%), Staphylococcus intermedius (1.6%), Streptococcus spp. (4.8%), Corynebacterium spp. (4.8%), and coagulase negative Staphylococcus spp./S.aureus (1.6%) were isolated. There was no microbial growth in 41.7% of the samples with clinical mastitis and in 37.1% with subclínical mastitis. In the antibiogram, 100% of the isolated negative coagulase Staphylococcus spp., S. aureus, S. intermedius, and Streptococcus spp. were sensitive to sulfazotrim. On the other hand, Corynebacterium spp. were 100% resistant to this same antimicrobiotic. Cefalotina, cefoxitina and gentamicina were efficient against the isolated Staphylococcus spp. which represent the greater part of the mastitis agents in this study. Mastitis was diagnosed in all flocks studied, however the number of affected animals was considered low; this probably is due to low milk production of the cows and to permanence of the calf with the mother after milking, what favors emptying the mammary gland. But hygienic sanitary measures and management practices have to be improved.