Resumen

VASQUEZ, Juan F; LOAIZA, Erica T  y  OLIVERA, Martha. The hygienic and sanitary quality of raw milk collected fromdifferent regions in Colombia. Orinoquia [online]. 2012, vol.16, n.2, pp.13-23. ISSN 0121-3709.

The results of hygienic and sanitary quality tests on 705,210,165 litres of raw milk collected by a Colombian dairy company in 2010 were analysed. This milk was sent from 3,939 cooling tanks in11 storage centreson the savannah around Bogotá, the Middle Magdalena Valley, the Viejo Caldas region, the Antioquia department and on the Atlantic coast. Significant differences (p<0.01) were found between plants for average colony forming units (CFU) and somatic cell count(SCC)using non parametric Kruskal Wallis one-way analysis of variance (ANOVA). The Funza (19,000), Armenia (63,000) and San Pedro (68,000) storage centres had lower average CFU/ml counts whilst the Puerto Boyaca (354,000), Funza (364,000) and Planeta Rica centres (373,000)had lower SCC/ml. 93.90% of the milk samples exceeded national CFU count standards and 84.49% of them the pertinent international standards. 39.54% of the milk sampled complied with Regulated Control Scheme (RCS) international standards. No significant differences were found in CFU and SCC values due to the time of year and a low level of association was found between the values for both parameters (r2=0.43). Ascertaining limitations regarding milk quality standards /failure to comply with the min each Colombian dairy region will help to orientate further education programmes for farmers according to their particular needs and thereby lead to improving Colombian milk quality.

Palabras clave : colony forming; unit; compliance percentage; mastitis; milk regulation; somatic cell count.

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