Open AccessMETHOD FOR SELECTING TECHNOLOGICAL TYPE COWS FOR ROBOTIC MILKING
Author(s) -
Д.Р. Шарипов,
O.A. Yakimov,
И.Ш. Галимуллин
Publication year - 2021
Publication title -
učenye zapiski kazanskoj gosudarstvennoj akademii veterinarnoj mediciny im. n.è. baumana
Language(s) - English
Resource type - Journals
ISSN - 2413-4201
DOI - 10.31588/2413-4201-1883-246-2-272-275
Subject(s) - milking , lactation , zoology , herd , udder , automatic milking , milk production , biology , mathematics , mastitis , pregnancy , ice calving , genetics , microbiology and biotechnology
The technological properties of the udder of cows have been studied under the conditions of using a robotic milking system. The research material was Holstein cows in the peasant (farm) economy of the Republic of Tatarstan, serviced by "Astronaut A4" robotic milking from "Lely Industries N.V.". A method for selecting cows for robotic milking has been developed. At the same time, in the herd, first, cows of the 1st lactation at 2-4 months of lactation are assessed according to the duration of milking and animals with duration of milking from 3 to 6 minutes are selected. Then, cows are selected from this group, whose lactation intensity indicator at 2-4 months of lactation exceeds the average value of this group by 0.5 sigma (M + 0.5σ), where M – the arithmetic mean of the indicator; σ – the standard deviation of the indicator. The proposed selection method makes it possible to form a breeding core and increase the milk yield in 305 days of lactation in the group of first-calf cows by 9.5 % (P˂0.01), daily milk yield – 14.4 % (P˂0.001), the milk flow rate – 33 % (P ˂ 0.001) and reduce the duration of cows' stay in the boxing by 17.5 %, the duration of milking cows – 21.7 %. When using this method, the efficiency of using robotic technology for milk production is increased.