Resumen

CLAVIJO, Antonia et al. Efecto del sistema de explotación sobre la aparición de mastitis caprina en dos fincas del estado Falcón, sus agentes etiológicos y la resistencia a antimicrobianos . Zootecnia Trop. [online]. 2002, vol.20, n.3, pp.383-395. ISSN 0798-7269.

With the purpose of determining the effect of farrning system on the presence of mastitis in goats, their etiologic agents and the sensitivity to antirnicrobial, it was carried out this investigation in two farms in Falcon state. One farrn with serni- intensive handling (Farm A) and the other one intensive (Farm B). Staphylococcus aureus was isolated (62%), Endurichia coli (10,3%), Streptococcus dysgalactiae (10,3%), Streptococcus uberis (6,8%), Enterobacter aerogenes (6,8%), and Mycoplasma sp. (3,4%); presenting multiple resistance to the antirnicrobial. Farrn A presented mastitis in 44,4% of the samples, caused by S. aureus (62%), E. aerogenes (25%), and S. dysgalactiae (13%) showing low resistance levels with 4 pattems that included from 2 to 13 markers. complete sensibility was observed AN, C, DP, ENR, G, NB and Te. In Farrn B, mastitis was present in 87% of the samples. S. aureus (61%), E. coli (14%), St. dysgalactiae (10%), St. uberis (10%) and Mycoplasma sp. (5%) were isolated, showims a high resistance, including pattems from 6 to 19 markers berth momegth antimicrobial were 100% sensitive. This indicates that farrning system influences in the appearance of mastitis, because cohen is intensive and the biosecurity measures are not completed, more cases of mastitis take place being necessary to know the changes in the bacterial ecology and in the resistance to antimicrobial, in each farm, to recommend efficient therapies.

Palabras clave : mastitis; goat; antimicrobial; susceptibility.