Primary veterinary-sanitary control of milk quality at a dairy farm
This research was conducted in the Agricultural "Cherdanskaya", which is one of the largest producers of premium milk in Sverdlovsk region, using advanced technology in its production. For identify cows with mastitis udder disease on the farm before milking is used mastitis diagnostic test from the company "DeLaval". Was studied a group of 48 cows with the mastitis test and found 5 cows with a positive reaction, 9 questionable and 34 with a negative reaction to mastitis. From each group animals were selected for 3 of the milk samples and a survey on the bacterial contamination by making smears, staining and microscope method and the Cup method by plating milk samples on nutrient media. In the result, it was found that the total contamination of milk with subclinical mastitis increases 2.5 times, while the clinical form 13.6 times. Somatic cell count subclinical mastitis increases about 2.5, and in the clinical form of 2.5 - 25 times.