Rabbit is the promising livestock to developed in Jakarta under small-scale or backyard systems. Low level of input, fast return and suitable to popularize in rural area were the merits of raising rabbit in DKI Jakarta. However, rabbit performances in several farmers were differed. The aim of present study was to measure the mortality rate of pre-weaning rabbit and to evaluate its causes. The data of pregnant rabbit since year of 2014 until 2016 were recorded for gestation period, month of parturition, level of parity, litter size, and total of pre-weaning losses. The result showed that mortality rate of rabbit in DKI Jakarta categorized as high, it is 61.88%. From the observation, the main mortality factor was caused by failure of maternity behavior, followed by weak newborn, cannibalism of doe, technical cause such as trapped in the gap of wire of cage, lack milk production, desease, predators, climate, and death of doe.

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