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Reprodukční a užitkové vlastnosti dojnic holštýnského skotu v chovech s rozdílným typem dojení
JEŠETOVÁ, Kateřina
This study focuses on the reproductive and productive traits on two dairy farms of Holstein cattle with different types of milking. The aim of the study was to evaluate and compare the productive and reproductive parameters of Holstein cattle in herringbone and robotic milking parlours for the year 2023. On the farm A, there is milking caried out in a herringbone parlour twice a day. Cows are milked by machine in the groups (2×10). On the farm B, milking is carried out by using automatic milking robots twice a day. It is obvious from the milk yield results that the farm B achieved a higher average milk yield by almost 4 liters per cow (3,86 l) compared to the farm A. Cows from both farms achieved higher milk yields with increasing order of lactation. On the other hand, higher milk component content (fat and protein content) was achieved within farm A. There was not a significant difference in the average protein content in the milk between the farms (0,08 %). However, the average milk fat content was higher in the farm A by 0,41 % compared to the farm B. The average somatic cell count was twice as high in the farm with robotic milking (342 000 SB/ml) compared to the farm A (170 000 SB/ml). The largest differences between these farms with herringbone and robotic milking enterprises were in milk yield, milk fat content, somatic cell count, lactation days and percentage of stillborn calves. Other indicators, such as service period, age at first calving, dry period length, intercalving interval and insemination index were similar or almost identical in both farms.
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