MORPHOLOGICAL AND FUNCTIONAL FEATURES OF UDDER OF COWS OF DIFFERENT GENOTYPES DEPENDING ON MILKING TECHNOLOGY
The influence of milking technology on the morphological and functional features of udders of Black-Pied and Simmental cows was studied. It was found that loose housed Black-Pied cows milked with an automatic milking system (AMS) had greater udder measurements than those of the cows maintained in tie stalls and milked with pipeline milking machines: girth - by 3.9 cm (2.9%) (p < 0.05); depth - by 0.6 cm (2.5%); length - by 1.0 cm (2.5%); and width - by 0.5 cm (2.5%). The conditional size of udder of Black-Pied cows was greater than that of Simmental cows by 295.2 cm<sup>2</sup> (10.0%) (p < 0.05). The Black-Pied cows milked with AMS yielded more milk than the cows of the third group (Black-Pied, pipeline milking machine) by 1.2 kg (6.2%). Milk let-down is greater in Simmental cows by 0.05 kg/min (2.3%) than that in the group of Black-Pied cows with the same milking technology. The difference in the milk let-down rate in Black-Pied cows made 0.05 kg/min (2.4%) in favor of loose housed cows milked with AMS.