Objective

: To characterize some factors which influence the hygienic-sanitary quality of milk in two dairy farms with different production conditions.

Materials and Methods

: A survey was done with the workers of one farm, belonging to an animal husbandry enterprise of Matanzas province, to determine their knowledge about the factors that affect milk quality and the fulfillment of the procedures for obtaining and preserving milk. In addition, the quality kinetics of the milk stored in two dairy farms of the enterprise, was evaluated.

Results

: The fat percentage varied between 3,70-3,96 and 3,87-4,30 %; while acidity was 0,141-0,151 and 0,14-0,15 % for dairy farm 1 and 2, respectively. Density in both dairy farms remained in the established indicators. The reduction time of methylene blue was the indicator that showed higher variations. In dairy farm 1 it reached a time of 5 h and 30 min. during all the samplings. Nevertheless, in 2 it was 3,5 h in the initial sampling, and then it decreased until reaching 40 min. at 24 h.

Conclusions

: The hygienic-sanitary quality of the produced milk depends on the existing conditions in the dairy farms. Acidity, density, fat and total solids remained within the established criteria, in spite of differences in the dairy farms. The reduction time of methylene blue was the most affected indicator in dairy farm 2, according to the hygienic conditions under which milking was carried out.

        · abstract in Spanish     · text in Spanish     · English ( pdf ) | Spanish ( pdf )