Antibiotic residues in pasteurized and unpasteurized milk marketed in southwest of Paraná, Brazil

Abstract

ABSTRACT: The treatment of dairy cattle with antibiotics may lead to milk contamination by drugs residues, which represents risks to human health. This study aimed to investigate the presence of antibiotic residues in milk, produced and marketed in Capanema microregion, Paraná, Brazil, through the analysis of pasteurized milk samples from different brands consumed by the local population and unpasteurized milk samples provided by a dairy industry. Enzyme immunoassays screening kits SNAPduo™ Beta-Tetra ST Test (Idexx Laboratories) were used, which verified the presence of β-lactam and tetracyclic drugs residues, as well as enzyme immunoassays screening kits Charm ROSA Test (Charm Sciences), which established the presence of quinolones and sulfonamides groups. Positive samples were reported for the four different classes of drugs, demonstrating failures in the inspection and monitoring of the sanitary and chemistry quality of the milk. Results obtained will form the basis to building a database about the quality of milk produced and marketed in the region, as well as the use of these materials to build up an initial theoretical framework for the development of research in animal health and public policies focused on the milk producers and dairy industry, to improve the quality of the milk produced.