The real potential of semen production of Bali Bull: over year observation at Singosari National Artificial Insemination Center (SNAIC), Singosari-Indonesia

Increased reproduction is closely related to increased bull productivity. The high productivity of these bulls will increase the amount of straw. The productivity capability of Bali bull is essential in producing straw. High productivity will result in high straw production as well. So the research aims to determine the productivity of Bali bull at SNAIC in the last year. 31 Bali bulls aged 4 – 11 years were used in this study at SNAIC. Total 1.273 ejaculations collection from these during one year. The parameters used in this study include the number of successful holding of each bull, total productivity, and estimation of straw production in one year. From 31 Bali Bulls, the ranking was grouped into two based on values of sperm productivity. The two groups were analyzed using an unpaired T-test. The results showed that the pH, volume, individual motility, concentration, and abnormality were significantly different (P < 0.05) between the high and low groups. The percentage of successful shelters, total TSM, and the number of straws produced in one year in the high productivity group were higher than the low productivity group. High productivity groups are the best with high productivity potential and potential as a source of semen.