Abstract The present study was planned to explore the productive performance including birth weight (BWT), lactation length or days in milk (DIM) and milk yield (MY) on imported Holstein Friesian kept under the local conditions at different locations in Baluchistan. Overall average values for BWT ranged from 15 to 68 kg with an average of 30.12 ± 0.15, DIM were 180 to 728 with an average of 313.56 ± 3.83 and MY ranged from 1471 to 7033 lit with an average of 3731.26 ± 40.52. The effect of year, season, age and location were studied and the results revealed that the year (P<0.01) and season of birth (P<0.05) and location of the farm (P<0.01) had significant effect on BWT, while age of the dam had non-significant effect on this trait. In case of DIM and MY, season of calving and location of farm had non-significant effect while the effect of year of calving (P<0.01) and age of the dam (P<0.01) had significant effect on MY but no significant effect on DIM. Overall performance of these imported and farm born Holsteins was much better as compared to the local breeds.
Keyword: Holsteins, lactation, Birth weight.