A study on factors affecting reproductive performances of Dairy cow in Rangpur

Abstract

This study was conducted in the Rangpur district of Bangladesh to comprehensively assess the factors influencing the reproductive performance of dairy cows, with a specific focus on metestrous bleeding, parity, the timing of artificial insemination, age, breed, and repeat breeding incidents. The study revealed some significant findings. Metestrous bleeding was identified as a critical factor (P<0.00) significantly reducing the conception rate in dairy cows. Parity was found to play a pivotal role (P<0.038) in determining conception rates, with heifers exhibiting the highest fertility, while older cows experienced a decline in their reproductive performance. The timing of artificial insemination (P<0.026) in relation to the onset of estrus was very important, with insemination around 12-16 hours after onset estrus resulting in a remarkable high conception rate. Moreover, age of cow was identified as influential factors, with older cows at a higher risk of repeat breeding (P<0.048).