Study on productive and reproductive performance and reproductive disease prevalence in different breed combinations of Freisian×Local crossbred at Government Dairy and Breeding Farm, Faridpur

Abstract

The study was undertaken to evaluate the productive and reproductive performance of different breed combinations of Holstein Frisian and local and to measure the effect of different breed combination of Holstein Frisian and local at Govt. dairy and breeding farm in Faridpur district. The prevalence of different reproductive diseases as mastitis, dystokia, and brucellosis was studied. About 29 cows of 1st parity were taken as study population. Age range was 3-5 years of maximum cows. Different breed combination as Local × Holstein Frisian (L×F), (Local× Holstein Frisian) × (Local× Holstein Frisian) ((LxF) x (LxF)), (Local× Holstein Frisian) × Holstein Frisian ((LxF) x F was taken under consideration. The time duration of this study was 2 months and based mainly on recorded data of the farm. To evaluate the productive and reproductive performance, age of 1st calving, service per conception, days open, gestation period, milk production, calves birth weight and live weight were considered. The maximum value of HF crossbreds in different breed combination were in different parameter as age of 1st calving, service pert conception, days open, gestation period, milk production calves birth weight and live weight were 3.48±0.17 years, 4.00±0.37, 338±118 days, 274.50±5.69 days, 8.33±0.88 liters, 32.17±4.88 kg, 247.50±6.29 kg respectively. The all breed combination of HF 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, dystokia, and brucellosis. Pattern of diseases affection was in both simple form and complicated form.

Key words: Breed, productive performance and reproductive performance, diseases

CHAPTER- I