ABSTRACT
A study was carried out concerning the prevalence of Streptococcus suis type II in swines in Botucatu region, São Paulo State. Nine properties were studied, in a total of 331 animals of Large White X Landrace breeding, being 164 (49.55%) males and 167 (50.45%) females, with ages ranging from 4 to 6 weeks. The samples were obtained by sterile swabs from tonsils and were cultivated in MacConkey and 10% Bovine Blood Agar media. The plates were incubated at 37oC till 72 hours. The following tests were performed for the biochemical classification: acid production from inulin, lactose, raffinose, manitol, salicin, sorbitol and trehalose, aesculin hydrolysis, sodium hipurate and growth in saline solution 6.5%. Streptococcus suis type II were isolated in 34 (10.27%) samples. Ampicilin, oxacilin, penicillin, cloramphenicol, tetracycline, sulfazotrim, gentamicin and cephalotine were used to determine sensitivity. The results of the antibiogram, according to its sensitivity and resistance, respectively, are expressed as follow: cloramphenicol (92.86% and 3.57%), cephalotine (92.86% and 3.57%), oxacilin (92.86% and 7.14%), ampicilin (85.72% and 7.14%), penicillin (71.43% and 3.57%), gentamicin (45.43% and 35.71%), tetracycline (7.14% and 85.72%) and sulfazotrim (7.14% and 85.72%).
KEY WORDS:
Streptococcus suis type II; zoonoses; carrier; susceptibility; antimicrobial