Population and Production Dynamic of Peranakan Ongole Cattle in The Breeding Source Area

The purpose of this research was to figure out the population structure and productivity of Peranakan Ongole cattle in the breeding source area. The research was conducted from September 2022 to August 2023 in the breeding source area for Peranakan Ongole cattle, Napis village, Tambakrejo sub-district, Bojonegoro district, East Java province. Data was obtained by recording for 1 year on 1,015 heads Peranakan Ongole cattle. Research variables include population structure and cattle productivity. The results of population structure research showed that the number of male calves was 10.34%, female calves 8.13%, bulls 17.61%, and cows 63.93%. Peranakan Ongole cattle calf crop was 55.01%, calf births to the population were 37.04% with the number of male calves born at 53.46% and the number of female calves born at 46.54%. The percentage of cows to the population was 63.94%. The percentage of mortality to the population was 2.27%. Total livestock income to the population was 12.12% and total livestock output to the population was 31.13%. The natural increase in Peranakan Ongole cattle was 34.78%. The research results showed that the Calf crop value is quite good. To increase the percentage of calf crops, it is necessary to limit and select the production of prospective and productive heifers and cows. Prospective heifers and cows who are productive and have good potential must be preserved to increase the number of births and produce good-quality calves.