Retrospective study was conducted in Wolaita Sodo State Dairy Farm, Southern Ethiopia, to assess the reproductive performance and herd life of Jersey cattle, and the associated factors. The study breed was mainly kept in the farm on pastureland and with some supplementary feeds. The results revealed an overall mean of age at first service, age at first calving, calving interval, interval between calving and effective service and number of services per conception of 722.24 days (SE=36.4), 1035.21 days (SE=12.59), 450.09 days (SE=6.60), 174.68 days (SE=8.61) and 1.79 (SE=0.06) respectively. All the traits were significantly influenced by year of birth (
