A Report on Productive and Reproductive Performance and Reproductive Disease Prevalence in Different Breed Combinations of Crossbred at Mollah Dairy Farm, Chittagong.

Abstract

The study was undertaken to evaluate the productive and reproductive performances of different breed combinations of Holstein Frisian and local and to measure the effect of different breed combination of Holstein Frisian, Shahiwal, local at Mollah Dairy Farm in Chittagong district. The prevalence of different reproductive diseases as mastitis, dystocia, and brucellosis was studied. About 68 cows of 1st parity were taken as study population. Age range was 3-5 years of maximum cows. Different breed combinations as (Local × Holstein Frisian) (L×F), (Local× Holstein Frisian) × (Local× Holstein Frisian) ((L×F) x (L×F)), (Local × Holstein Frisian) × Holstein Frisian ((L×F) × F), (Shahiwal × Local) × Holstein Frisian ((S×L) × F) were taken under consideration. The time duration of this study was 3 months and based mainly on recorded data of the farm. To evaluate the productive and reproductive performance, age of 1st calving, days open, gestation period and milk production were considered. The maximum value of HF and SLF crossbreds in different breed combination were in different parameter as age of 1st calving, days open, gestation period, milk production were 3.5±0.3 years, 264±9.3 days, 278±9.3 days, 13.4±3.7 liters respectively. The all breed combinations of HF, Shahiwal and local crosses cause variation in above parameters except in days open. In case of days open the effect found same or no variation because every cow during study period was not come to the heat. As a result to find out the effects of all breed combination of HF and local crosses in “days open” was not possible. There also found that 50% animal of entire flock was affected with reproductive diseases as mastitis, dystocia, and brucellosis. Pattern of diseases affection was in both simple form and complicated form.