Bettera Susana G, Dieser Silvana A, Vissio Claudina, Geuna Graciela, Díaz Cristian, Larriestra Alejandro J, Odierno Liliana M, Frigerio Cecilia
Departamento de Microbiología e Inmunología, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Córdoba, República Argentina.
Rev Argent Microbiol. 2011 Apr-May;43(2):111-4. doi: 10.1590/S0325-75412011000200008.
Bacteriological contamination of well water and wash water in a random sample obtained from 50 farms from Villa María (Córdoba) dairy area, Argentina, was evaluated during a visit in 2007. Forty six percent and 24 % of farms showed an aerobic mesophilic bacteria count higher than 500 CFU/ml in wash water and well water, respectively. Escherichia coli was isolated in 20 % of samples from both sources. Pseudomonas aeruginosa showed high frequency of isolation in well water (36 %) and wash water (42 %). Eighty and eighty-eight percent of dairy farms have contaminated well water and wash water, respectively. The findings show moderate concordance between contamination of well water and wash water for mesophilic aerobics and total coliforms. The results reveal that a high percentage of dairy farms in the basin under study have poor bacteriological water quality, not suitable for milking and washing facilities.
2007年访问期间，对从阿根廷科尔多瓦省玛丽亚镇奶牛养殖区50个农场随机抽取的井水和冲洗水样本进行了细菌学污染评估。分别有46%和24%的农场冲洗水和井水中需氧嗜温菌计数高于500 CFU/ml。两种水源的样本中均有20%分离出大肠杆菌。铜绿假单胞菌在井水（36%）和冲洗水（42%）中的分离频率较高。分别有80%和88%的奶牛场井水和冲洗水受到污染。研究结果表明，嗜温需氧菌和总大肠菌群在井水和冲洗水污染方面存在中度一致性。结果显示，所研究流域内的奶牛场中，有很大比例的细菌水质较差，不适用于挤奶和清洗设施。
