Abstract
Machine milking technology requires a strict selection of cows, because different factors influence its efficiency: physiological characteristics of animals, technical characteristics of milking plants, etc. In this connection, the purpose of our research was to study udder quality and to establish the influence of teat morphological features on the process of machine milking. It was found that 75% of the herd had cylindrical teat shape, which contributed to complete udder emptying, there was no teat canal
 overcompression in the upper part, the cows did not show anxiety. At the same time, animals with funnel-shaped and conical udders were identified (15.9 and 9.1%, respectively).
 When milking these cows, the teat canal in the upper part was clamped by the rigid edges of the teat rubber, which slowed down the process of milking. When milking these animals, it is recommended to use teat rubbers with soft edges of the head, which can increase the average and maximum milk flow rates of cows by 12.5 and 7.5% respectively and relative milk yield by 3.3 percentage points.
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