Evaluation of adaptability of cows under conditions of voluntary milking

The research material was highly productive Holstein cows in the peasant (farmer) economy of the Republic of Tatarstan. As a result of the research, the authors noted that the voluntary milking system contributes to the formation of a certain stereotype of behavioral reactions in animals during the day. Cows can be milked both day and night. At the same time, animals with an average daily yield of 24.4±1.32 kg were milked 2 times a day, 34.0±0.71 kg - 3 times, 40.4±1.40 kg - 4 times, 45.0±1.72 kg - 5 times. With an increase in the multiplicity of milking, single milk yield is reduced from 12.2±0.52 kg when visiting the milking session 2 times to 9.0±0.37 kg when visiting the milking station 5 times. The average intensity of lactation was 2.08±0.03 kg/min, but as a consequence of increasing the frequency of milking, the intensity of lactation is reduced from 2.34±0.12 kg/min when milking 2 times to 1.91±0.11 kg/min when visiting the milking session 5 times. However, not all cows are suitable for this system for the duration of milking and the intensity of lactation, studies have shown that 63.0% of animals fit into the requirements, while the most effective work is achieved in the presence of at least 70.0% of such cows.