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The objective of this study was to elucidate reproductive characteristics, potential output and dynamics population of Ongole Grade cattle in Kebumen Regency, Province of Central Java. The study was conducted from September to November 2015. The materials used in the study were 165 farmers as respondents having Ongole Grade cattle. The research method used was survey. Respondent samples were taken from five districts in which the location was determined by using purposive sampling. Data were collected through direct interviews with livestock farmers as respondents. The analysis used was descriptive analysis. The results showed that the age at first mating was 26.87 month, S/C was 1.64, post-partum mating was 4.52 month, weaning age was 3.97 month, calving interval was 14.32 month, and the birth rate to population was 45.5%. Reproductive efficiency value was 91.8%, natural increase was 44.68%, and net replacement rate of bull and heifer were 1,209% and 253%, respectively, and total output 44.11%. Population dynamics of Ongole Grade cattle from 2009 to 2014 fluctuated with average growth was -4.84%. In 2019, cow population of Ongole Grade was estimated about 68.381 heads. In conclusion Kebumen Regency has a relatively high potential output of Ongole Grade cattle that is 44.11% and population dynamics from 2010 to 2014 fluctuated with average of decrease growth is  4.84%. Estimation of cow’s population of Ongole Grade cattle will increase 16.7% per year.

POPULATION DYNAMICS ON ONGOLE GRADE CATTLE IN KEBUMEN REGENCY - CENTRAL JAVA