Reproduction efficiency of Zebu and crossbred cows as measured by the inter-estrus and inter-service intervals at Bako

The study was conducted to evaluate the reproduction efficiency of zebu and crossbred cows measured by the inter-estrus and inter-service intervals using data from Bako Agricultural Research Center. The overall mean inter-estrus and inter-service intervals were 44.3 t 0.85 and 49.1 t 1.24 days, respectively. Comparison of the sire breeds indicated that the Jersey crosses had significantly (p 0.05) different from Boran in inter-estrus and inter-service intervals. Cows in the first parity had significantly (p 0.05) The first inter-service interval was significantly (p 36 days), respectively. The inter-estrus interval was significantly longer (p < 0.05) than the inter-service interval. From this study, it can be concluded that the prolonged inter-estrus and inter-service intervals could be due to poor heat detection, poor breeding and probably early embryonic mortality. Thus, improving the heat detection and breeding efficiency and identification of the causes of early embryonic mortality might enable in improvement of the overall reproductive efficiency of the farm