Ação de produtos pós-dipping sobre a adesão de Staphylococcus spp. e biofilme consolidado

Abstract

Bovine mastitis is a common disease in herds of dairy cattle that can cause huge losses if not controlled. Staphylococcus spp. are involved in most cases mainly subclinical mastitis with difficult removal. One possible explanation for the persistence of these pathogens would be the ability of staphylococci survive in bacterial communities called biofilms, which confers protection of bacteria to adverse conditions and may be present in both the mammary gland as well as equipment and the milking environment. The application of teat dipping product after milking is a fundamental management measure for prevention of new cases of mastitis. It is known that these products have good action on mastitis cell-free microorganisms, but there are no studies that assess their action on biofilms. This work aimed to evaluate the effect of two teat dipping products based on chlorhexidine and iodine on preventing adhesion products as well as the action on consolidated biofilms of 16 strains of Staphylococcus spp. Generally, disinfectants did not prevent the adhesion of most samples, although act eliminating the free cells, and there was little action on the consolidated biofilms. Thus, we highlight the importance of prevention of colonization of the teat by infectious microorganisms, thereby preventing infections resulting from biofilm formation.