Abstract
The Holstein Friesian has been rated as top milk producer number one cattle in the world as far as the yield is
concerned. Their productive potentials are excelled in USA and other European countries. The same were
imported to meet the milk demands of the developing countries like Pakistan. One thousand cattle imported from
Denmark in 1977-78 by Pakistan Government, were kept at Government Dairy Farms in Balochistan Province at
seven locations viz; Kalat, Khuzdar, Loralai, Mustung, Pishin, Quetta and Zhob. This study was planned to
explore their productive performance regarding the birth weight (BWT), lactation length or days in milk (DIM) and
milk yield (MY) kept under the local conditions of Balochistan. Effect of localities with respect to the environmental
data was also explored. 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 calvinq 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 than the local breeds.
