Calidad higiénico-sanitaria de dos sistemas de ordeño en fincas bovinas ubicadas en el sector Vuelta Larga, municipio Maturín, estado Monagas (Venezuela)

The objective of the present investigation, was to evaluate the ‘Hygienic-Sanitary Quality of two Milking Systems in Bovine Farms’ in Vuelta Larga Sector, Maturin City, Monagas State. The trial lasted six weeks, in which the Hygienic Efficiency (% EH) of the facilities, the workers, the milking routine, the cleaning and disinfection measures and the storage and transport of both milking systems, were calculated. Furthermore, the population of Mesophilic Aerobic Bacteria (BAM) was determined ; The data were processed following a distribution in random blocks with factorial arrangement (2x2) whose factor A represented the milking system: manual and mechanical, and the factor B was the application and omission of manual drying of teats for each animal prior to milking. The percentage of Hygienic Efficiency (% EH) of the farms evaluated was not satisfactory, corresponding to 66.66% in the farm 2 and 54.84% in the farm 1. The variable was examined by analysis of variance and its mean values compared by Tukey test at 5% of probability. Factor A achieved a highly significant difference (p ≤0.01), with the manual system obtaining the lowest count with 5.24 Log10 CFU / mL. In factor B significant difference was found (p≤0.05), the drying application decreased the BAM population with 5.25 Log10 CFU / mL. The Hygienic and Sanitary measures implemented in the milking routine directly influence the quality of raw milk.