Epidemiological analysis of ovarium hypofunction in beef cattle in Jepara regency

Ovarian hypofunction is the highest incidence of reproductive disorders in Central Java, breeders losses due to the long calving interval, and increased maintenance costs.Feed quality is considered to be a cause of ovarian hypofunction, but other factors cause disease.This study aimed to determine the prevalence and risk factors for ovarian hypofunction in beef cattle and a model for predicting ovarian hypofunction in Jepara Regency. A total of 304 beef cows from 176 breeders were selected by formal random sampling in 14 villages in 7 sub-districts.Anamnesis was conducted to farmers and the beef cow’s rectal examination to determine the reproductive status and questionnaires for animal husbandry and individual animals level.The results showed prevalence of ovarian hypofunction 8.88% and risk factors that have a relationship are frequency of supplementary feed (OR = 12.77), ownership of one animal (OR = 0.34), main feed (OR = 9.59), breed type (OR = 0.37), cows age (OR = 0.33), lactation status (OR = 0.07) and calf weaning time (OR = 0.03). Model of disease formed are Ln P/1-P = 0,484 + (2,247xPKUT) + (-4,406xSAPH).