A COMPARATIVE STUDY ON PRODUCTIVE AND REPRODUCTIVE PERFORMANCES OF LOCAL X FRIESIAN CROSSBRED COWS BETWEEN CENTRAL CATTLE BREEDING & DAIRY FARM, SAVAR AND SUPER DAIRY FARM, CHITTAGONG.

Abstract

The study was conducted on Central Cattle Breeding & Dairy Farm (CCBDF), Savar and Super Dairy Farm (SDF), Chittagong to compare the productive and reproductive performance of Local x Friesian crossbred cows under two different farm conditions. Age at first calving, Days open, gestation period, Calving interval and number of services per conception were considered as reproductive parameters whereas average daily milk yield and lactation length considered as productive parameters. In CCBDF, average age at first calving of Local x Friesian cows was 47.86 13.69 months whereas in SDF it was 38.29 5.21 months. The average days open in CCBDF and SDF were 301 114 days and 149 41 days respectively. Average gestation period in CCBDF was 277.52 7.72 days and in SDF 279.51 7.82 days. Average calving interval in CCBDF and SDF were 614 146 days and 431 62 days respectively. Average No. of services per conception in CCBDF was 1.70 0.62 Whereas in SDF 2.13 0.89. Average daily milk yield per cow in CCBDF 4.48 0.86 Ltr. whereas in SDF it was 8.62 2.88 Ltr. Average lactation length in CCBDF and SDF Were 319.53 96.09 days and 303.17 26.09 days respectively. So, it is evident that, Local x Friesian herd of super Dairy Farm performs better than that of CCBDF, Savar.