The effectiveness of the use of mastitis vaccine in breeding farms

Abstract

The article presents data showing the effectiveness of the use of anti-mastitis vaccine in breeding farms of the Sverdlovsk region, based on the study of the level of diagnosed mastitis and the indicator of somatic cells in milk. Studies have shown that the use of animal immunization against mastitis has a positive effect, so 6 months after the first vaccination of animals in the breeding reproducer and plant, the number of detected mastitis decreased by 16,6% and 7,3%, respectively, and the level of somatic cells in the milk of highly productive cows by 26,5% and 10,7%, respectively. 12 months after the first vaccination scheme was applied, the total number of animals with signs of mastitis in the breeding reproducer and plant was 13,3% and 7,5%, respectively. The level of somatic cells in the nucleus amounted to 290 thousand. /ml., and the stud farm of 450 thousand/ml 24 months after first use of vaccination schemes, the level of mastitis was identified at 6,0% and 5,7% of the studied population of high yielding cows breeding farm and breeding farm, respectively. The average number of somatic cells found in milk of animals of a farm decreased by 80 thousand/ml, the farm – to 79 thousand/ml, in comparison with the previous study period. The study revealed a significant decrease in diagnosed mastitis in animals after 32 months due to the use of the STARTVAK antimastitic vaccine, the total number of diseases in the breeding reproducer decreased by 30,6% compared to the period of the beginning of vaccination, and in the breeding plant – by 26,2%. As a result, the dynamics of reduction of subclinical and clinical mastitis in the breeder compared to the period at the time of immunization was 19,5% and 11,1%, respectively. And in the stud farm, the level of subclinical and clinical mastitis decreased by 16,9% and 9,0%, respectively. The number of somatic cells in the milk of cows contained in the breeding reproducer was 152 thousand/ml, which is 83,9% lower compared to the initial study period. The level of somatic cells in the studied samples of milk of animals kept in the breeding plant was 263 thousand/ml, which is 62,2% lower than this indicator before the application of the animal vaccination program against mastitis.