*Corresponding author's e-mail: nurtini@ugm.ac.id
The objective of the research was to know the accuracy of the model of carrying on trade. The materials of this research were 93 heads of cattle consisted Ongole Grade (OG) and its crossing (OG cross). The results showed that the margin (the difference between selling price and buying price) for OG and OG cross were 415, 419.00.00IDR/head and 551, 032.00IDR/head, respectively. The result of multiple regression analysis showed that the margin could be explained jointly and very significant (P< 0.01) by slaughtered weight of cattle, weight of carcass, BCS, age estimation, sex, and breed of cattle (R2= 0.8060). Partially, the slaughtered weight of cattle, weight of carcass, BCS, and breed of cattle were positive and very significant influence on the margin got by cattle supplier, while the age estimation and sex positive and significant (P<0.05) influence on the margin got by the cattle supplier.
Butcher, Estimation of weight the carcass, Margin, Price transaction, Trader