Assessment of the condition of health of the mammary gland of cows by indicators of milk quality

Abstract

The article presents an analysis of the level of somatic cells in the secret of the udder and the electrical conductivity of milk, on the basis of which the state of health of the mammary gland and the assessment of the incidence of cows with mastitis are studied. It was established that during the study period the number of healthy animals was 57.78-70.16%. Initial signs of subclinical mastitis were found in 13.23-21.80% of cows. Subclinical mastitis was diagnosed in 3.57-9.64% of animals. Clinical mastitis and complicated clinical mastitis were detected in 4.46-7.23% and 1.99-8.04% of cows, respectively. In 43.14% of cows there were single increases in the level of somatic cells. The maximum average number of somatic cells in the secret of the udder of cows in the herd was 440.31 thousand / ml, the minimum - 197.18 thousand / ml. The number of samples of the secretion of the mammary gland of cows with a high content of somatic cells was in the range of 12.44-21.43%. The electrical conductivity of milk in healthy animals was at the level of 3.5-4.5 1/Ohm*cm³. In animals with subclinical and clinical mastitis, the electrical conductivity of milk was 4.5-6.0 and 6.1-7.0 1/Ohm*cm³, respectively.