Etiologia e sensibilidade antimicrobiana in vitro de bactérias isoladas de caprinos de corte com mastite subclínica na Paraíba.

Abstract

Etiology and in vitro antimicrobial susceptibility of bacteria isolated from beef goats with subclinical mastitis in Paraíba. Mastitis is a disease that affects the mammary glands of females, independent of species or breed, is characterized by inflammation, usually caused by microorganisms, but may be secondary to trauma, external injuries, high activity of the udder and mainly by poor hygiene, if presents in clinical or subclinical form. The dairy breeds are more predisposed, also occurring in meat production animals. This infection is responsible for significant losses in milk production due to low production and poor quality milk. Also, in the production of meat, because the milk is not good quality nutrition, harming gain weight of the creates and, consequentemente, causing losses to the producer. This study aimed to identify the etiologic agents of subclinical mastitis of beef goat of the cities Manaíra and Santana de Mangueira, located at the high hinterland Paraiba. According to the obtained results, there was isolation of bacteria in 5% of the samples collected, and the etiological agents isolates were: Staphylococcus spp. (63,6%), Serratia (18,1%), Klebisiella spp. (9,15%) and Escherichia coli (9,15%). In the susceptibility test "in vitro" by testing ten antibiotics, the microorganisms showed resistance to penicillin (100%), ampicillin (85.71%) and oxacillin (85.71%), and sensitivity to chloramphenicol (71.43%), gentamicin (71.43%) and cephalexin (57.14%). In addition to the ciprofloxacin, neomycin, norfloxacin, and tetracycline. The California Mastitis Test (CMT) proved to be efficient for the identification of subclinical mastitis in goats. Concludes that it is necessary implementation of facilities for cleaning and disinfection programs and the establishment of preventive measures and awareness of the owners, as the performance of diagnostic tests for subclinical mastitis, promoting proper treatment of such disease.