THE INFLUENCE OF THE PHASES OF THE ANNUAL TECHNOLOGICAL CYCLE ON THE DYNAMICS OF RUMINATOR ACTIVITY IN HEALTHY COW MILKING

In a long-term experiment on red-spotted dairy cows using the SCR Heatime HR-IR system, nature of rumination in animals was studied. The involved 10 cows, which were observed during year-round physiological cycle.Studies have shown that phase cycle is not significantly affected by term rumination. Rumination gradually increases after calving from 254 to 510 1 62 days lactation, and then stabilizes at 505-509 minutes per day. Then, due change composition diet transition first second level temporarily for 5-7 562 minutes, again 536-538 minutes.In third lactation there gradual decrease time launch it becomes minimal - 505 dry phase, decreases close birth. some completely absent several hours. After childbirth, duration returns normal 45-55 lactation.The closely directly correlated with content fiber diet. At optimal levels, ranges 505-540 When concentration exceeds level, goes beyond greater direction, reduction less than 16 -18 % matter, insufficient digestion diet.The indicator can be used characterize norm its dynamics serve as reliable test physiology stressful state cow's body. Healthy highest rates intensity more twice naturally moments one another, last three weeks pregnancy calving.Rumination andan increase animals.Reducing below leads significant departure norm.