Changes in milk quality indicators depending on year season in black-and-white cows in Vologda region

In 2022 on the territory of the Vologda Region, the quality indicators of milk: the mass fraction of protein, the mass fraction of fat, and the content of somatic cells have been determined in the Black-and- White cows. During the period 95,264 milk samples taken during control milking at the farms of the region have been analyzed. Samples have been tested on the Danish Combi-Foss infrared milk analyzer. Based on the data obtained, a research base has been compiled, and then the comparative analysis of the studied indicators has been carried out, taking into account the season of the year. According to its results, it has been established that throughout 2022 the indicators have been within the normal range and in line with Russian regulatory documents. The content of fat and protein in the autumn period is higher compared to other seasons of the year. The number of somatic cells in milk meets the requirements of the highest grade throughout the year.