T. V. Pidpala,
U. S. Matashnuk
The result of the analysis by the technological cards and sequence movement is established that cows are distributed into the technological groups by physiologically technological periods and placed in appropriate shops: the cows which had the calf, milking and artificial insemination, production of milk, persistent to moister cows.
It is established that cows of the experimental group have advantages by the level of milk productivity. For the same duration of lactation period it was received from them for 907 kg (P>0,999) more milk in the first lactation period than from animals of the controlled group. At the same time, the firstborn of the experimental group is dominated by the amount of milk fat and milk protein. The difference compared to peers in the controlled group was 32.6 kg (P>0,999) and 27.4 kg (P>0,999). Cows of the experimental group are characterized by the more stable lactation curve compared to the animals of the research group.
It was found that the cows which gave birth at first in the experimental group showed up the highest daily milk production in the third month of lactation (42.8 kg) and after moving these cows to a milk production department, its amount began to decrease quickly. We see a different tendency in the animals of the experimental group. The extended period of their staying in the shop of the first milking and insemination helps to maximize the productivity of dairy cattle of the Holstein breed. They showed up the highest daily milk production in the fourth month of lactation (43.5 kg) and their milk amount gradually decreases, which led to a high level of milk production.
The results of the study proved that distributing of cows by physiological status into technology groups and keeping them in their relevant departments according to the flow-shop system allows unifying the operating conditions of dairy cattle according to their biological needs. It was established that the duration of staying cows in the shop of the first milking and insemination up to 180-200 lactation days helps to maintain a high level of milk productivity in animals and to increase total production.
Key words: technology, flow-shop system, cows, production, lactation, lactation curve.