A STUDY ON PRODUCTIVE AND REPRODUCTIVE PERFORMANCE OF DIFFERENT DAIRY COWS (AT SHIBGONJ UPAZILLA

Abstract

The study was done to monitor the comparative study on the reproductive and productive performance of different dairy cows under farm condition at Shibgonj Upazilla. For achieving these goal 125 dairy cows were selected from Shibgonj Thana. To evaluate the reproductive performance, age of puberty, gestation length, intercalving period were considered. The average age of puberty for Local non descriptive, LocalXFriesian, LocalX Jersy, LocalXSahiwal, FriesinXSahiwal were 35.2 months,20.2 months,27.8 months,21.6 months, 21.6 months respectively. The normal gestation period of cow is (280±10)days. The average gestation period for Local breed, LocalXJersy, LocalXFriesian, LocalX Sahiwal, SahiwalXFriesian were 279.68±3.59 days, 283.63±8.6 days, 281.13±3days.15, 280.6±6.32 days, 279.52±5.13 days respectively. The mean production performance of Local cows per day is of 4.008 liter and LocalXSahiwal (6.482),LocalXJersy(9.23), LocalXFriesian(10.2), SahiwalXFriesian(12.623) liters. As a whole FriesianXSahiwal performs better than other cross