Milk yield and its relationship in highly productive cows during robotic milking

Abstract. The purpose of the research was to study indicators milk yield highly productive cows, correlation dependence milking parameters on inter-milking time intervals, and their physiological relationships during robotic animals. Methods. conducted cows Lenin collective farm Moscow region, a database formed 5416 individual from SELEX program, taking into account signs (milk yield, single duration, different age periods, etc.). Results practical significance. results evaluation in are presented, importance most important factors affecting rate is noted. peak productivity first heifers occurred third month after calving, middle–aged – second month. difference yields between groups lactation 37 %, 20 %. duration closely related amount this relationship more manifested heifers: some months lactation, value determined than 66 % variations milking. With milking, average range 2.4–2.7 kg/min, two significantly lower, even higher for lactation. weakly correlated with intervals but secretion. 9–10 kg, optimal interval start nipple treatment connection device 131–152 seconds. Scientific novelty. For time, features by dairy interrelation, influence them preparation were studied.