Evaluación de la calidad del agua para uso agropecuario en predios ganaderos localizados en la región del Sumapaz (Cundinamarca, Colombia) / Evaluation of water quality for agricultural use in livestock farms located in the Sumapaz region (Cundinamarca, Colombia)

Objetivo: evaluar la calidad de agua en pequeñas y medianas unidades de producción ganaderas de la región de Sumapaz (Cundinamarca, Colombia). Materiales y métodos: el muestreo se realizó colectando 50 mL de agua en bolsas estériles, para la determinación de contaminación microbiológica incluyendo presencia de aerobios mesófilos, coliformes totales, Escherichia coli y Pseudomonas sp. de acuerdo con los parámetros permisibles de potabilidad definidos en el decreto 1575 de 2007 del Ministerio de la Protección Social de la República de Colombia. Resultados: se evidenció contaminación microbiana en 16 (66,7%) de los 24 predios evaluados de acuerdo con la normatividad descrita. También, se detectó la presencia de aerobios mesófilos, coliformes totales, Escherichia coli y Pseudomonas sp. en al menos el 25% de los predios evaluados. Conclusiones: los hallazgos sugieren que el agua podría representar una fuente de contaminación microbiológica directa para la salud humana, producción pecuaria y a la vez afectar la cadena de comercialización de productos lácteos y cárnicos en la provincia del Sumapaz..(AU)

Objective: to assess water quality in small and medium livestock farms from the Sumapaz region. Materials and methods: 50 mL of water were collected in sterile bags, for determination of microbial contamination, presence of mesophilic aerobes, total coliforms, Escherichia coli and Pseudomonas sp. According to law 1575/2007 from The Ministry of Health. Results: microbial contamination was determined in 16 (66,7%) out of 24 farms. Altogether with presence of mesophilic aerobes, total coliforms, Escherichia coli and Salmonella sp in at least 25% of the evaluated farms. Conclusions:findings suggest that water could represent a source of microbial contamination for human health, livestock production and market chain of dairy and meat products in the Sumapaz province..(AU)

Screening food-borne and zoonotic pathogens associated with livestock practices in the Sumapaz region, Cundinamarca, Colombia.

Hazardous practices regarding antibiotics misuse, unsanitary milking procedures, and the commercial sales of raw milk and unpasteurized dairy products are currently being practiced by livestock farmers in the Sumapaz region (Colombia). The purpose of this study was to screen for food-borne and zoonotic pathogens associated with local livestock practices. We evaluated 1098 cows from 46 livestock farms in the Sumapaz region that were selected by random. Of the total population of cattle, 962 animals (88%) were tested for bovine TB using a caudal-fold tuberculin test and 546 (50%) for brucellosis by a competitive ELISA. In the population tested, 23 cows were positive for Brucella sp. representing a 4.2% seroprevalence and no cases of bovine tuberculosis were found. In addition, food-borne contamination with Escherichia coli and Staphylococcus aureus was assessed together with antibiotic susceptibility for ten different antibiotics in milk samples from 16 livestock farms. We found that 12 of the farms (75%) were contaminated with these food-borne pathogens. Noteworthy, all of the isolated pathogenic strains were resistant to multiple antibiotics, primarily to oxytetracycline and erythromycin. Our findings suggest that livestock products could be a source of exposure to Brucella and multidrug-resistant E. coli and S. aureus strains as a result of unhygienic livestock practices in the Sumapaz region. Training in good farming practices is the key to improving safety in food production.