The Correlation of Body Measurements and Weights of Ongole Crossbred (PO) Cattle in Kebumen Regency

Abstract

The aim of this research was to determine the correlation of body measurements with body weights, slaughter weights with carcass weights and deciding the most suitable formula to estimate body weights of Ongole Crossbred (PO) cattle in Kebumen Regency. This research was conducted from September to December 2015. The materials which were used recording data from 357 male PO cattle and 762 female PO cattle were divided into three groups of age (calf, young, and mature). The correlation between body measurements and weights was analyzed by multiple regression equation analysis by using SPSS 16 with stepwise method. The estimation of body weights through body measurements used Schoorl and Lambourne formula. The correlation of slaughter weights and carcass weights was analyzed by simple regression analysis used SPSS 16. The body measurements and body weights had a great correlation that showed by R² value were 0.86 and 0.91 for sire and dam respectively. The estimation of young and mature male cattle body weights was better using Schoorl formula while the estimation of young and mature female cattle body weights is better using Lambourne formula. The slaughter weights and carcass weights had a great correlation that showed by R² value were 0.90 and 0.65 for sire and dam respectively. Therefore, according to the research's result can be concluded that there is a great correlation between body weights with body measurements and slaughters weights with carcass weights of PO cattle. The estimation of PO cattle body weights through its body measurements can be calculated with Schoorl and/or Lambourne but remain to be paid attention to the correction factors.