NEVES, P. B.; http://lattes.cnpq.br/9998002022068128; NEVES, Patrícia Bueno das.
Resumen:
An epidemiological survey to caprine
subclinical mastitis in the Paraíba State was conducted to determine the occurrence
of the infection, to isolate and to identify the involved microorganisms, as well as to
evaluate the antimicrobial sensitivity of the isolated agents and to determine the
agreement between California Mastitis Test (CMT) and bacterial isolation. Sixty
nine goat milk samples from seven herds were collected. During milk collection the
physical examination of mammary glands and the CMT were carried out. Milk
samples were cultured on 5% sheep blood agar and incubated at 37 oC under aerobic
conditions for 48 hours, and colonies were identified by Gram staining method and biochemical tests. The sensitivity of the coagulase-negative Staphylococcus (CNS)
samples was tested to antimicrobials gentamicin 10 mcg, florfenicol 30 mcg,
kanamycin 30mcg, amoxicillin 10 mcg, enrofloxacin 5 mcg, cefquinome 30 mcg e
NBT (neomycin 30 mcg, bacitracin 10mcg and tetraciclin 30 mcg). Of the 69
analyzed milk samples, 29 (42%) presented bacterial growth. The CNS were
obtained in 81% of the isolated ones. Thirty six samples (52.2%) were positive at
CMT, which presented slight agreement compared to bacterial cultive, as well as low
sensitivity and specificity, 55.17% and 50% respectively. Kanamycin, gentamicin,
cefquinome, florfenicol and NBT presented anticrobial sensitivity upper to 90%.