STUDY ON SOME ECONOMIC TRAITS OF CROSSBRED DAIRY COWS

Abstract

The study was conducted to evaluate the economic traits of crossbred dairy genotypes at some selected dairy farms in Chittagong area. A total of 110 crossbred dairy cows belongs to three different cross (Local x Friesian); (Local x Sahiwal x Friesian); (Sahiwal x Friesian) were selected and their information regarding breed composition, milk yield, live weight of cow and their calf weight were collected from farm record for a period of last five years. Significance difference was found within the live weight (P<0.05) of different types of dairy cows. Incase of milk yield and birth weight of calf there were no significant differences (P > 0.05). Highest live weight (371.82 ± 8.54 kg) was observed in Local x Friesian and lowest in Local x Sahiwal x Friesian , (327.69 ± 9.06 kg). Milk yield was lower in Local x Sahiwal x Friesian (10.61 ± 1.16 L/day) than other two group. The average birth weight of (Local x Friesian); (Local x Sahiwal x Friesian); (Sahiwal x Friesian) was 29.38 ± 0.73, 10.61 ± 1.16 and 30.83 ± 0.86 kg respectively. The milk yield and live weight of Local x Friesian crossbred were superior to other dairy crossbreds whereas in birth weight of calves Sahiwal x Friesian was superior