Prevalence of staphylococcus species recovered from bovine mastitis [electronic resource].

Includes references.

Seventy four milk samples represent all affected quarters were taken from forty six dairy cows (holistein breed ) suffering from clinical mastitis in a large dairy farm at Dakhalia province – Egypt . The milk samples were examined bacteriologically to study the occurrence of staphylococcus (staph.) microorganisms and determined the susceptibility of coagulase positive staphylococcus for some chemotherapeutics agent. Out of the samples 40 (54.05%) revealed coagulase positive staph. which represent 24(52.17%) mastitic dairy cows , also further identification for coagulase positive staph. isolates revealed that the samples were infected with species of Staph. aureus , Staph. hyicus and Staph. intermedius with percentages 45.94% , 6.46% and 1.35% respectively which represent 21(45.65%) , 3(6.52%) and 1(2.17%) of mastitic cows respectively , on other hand 26(35.14%) of the samples infected with coagulse negative staph . represent 18(39.13%) mastitic dairy cows, also the study showed that the coagulase positive staph. more sensitive to gentamycin , erythromycin , trimethoprim and amoxacillin with percentage 100% , 95% , 92.5% and 65% respectively ,while the organisms less sensitive to sulfamethaxol , oxytetracycline , neomycin and ampicillin with percentage 95% , 72.5% ,62.5% and 52.5% respectively , on the other hand the organisms showed resistance to lincomycin , cefalexin and streptomycin with percentage 100% , 70% and 60% respectively.

Summary in Arabic.

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