0
2006.
Persistency of milk production of Simmental breed cow
In this research 245 cows are included. They are daughters of ten sires, and all of them realized 548 lactations in the period 2000 and 2003. Data were used from two cattle farms, "Backa" and "Pobeda" that are on government property "Krivaja". At first hundred days, cows produced approximately 1770 kg milk yield, and during the period of first two hundred days, cows produced about 3173 kg milk yield. The milk yield in monthly controls which were made approximately at 29,4 days, was 399 kg, which means 11,73 kg per day. Persistency of milk production was done by index R2:1 and the average amount of milk was 79,57%.