Regression Models for Estimating Fat Carcass Percentage Using Chest Measurement in Thin Tailed Lambs

This study was conducted to evaluate the possibility of using chest measurement for subcutaneous, intermuscular, and total fat percentage in Thin Tailed Lambs. Twenty one heads of three months old male thin tailed lambs with initial body weight (BW) 14.57 ± 2.19 kg were raised up to 3 months fattening period. Chest girth (CG), chest depth (CD), and chest width (CW) were measured before slaughtered. The fat of the carcass was separated into subcutaneous, intermuscular, and total fat, then weighed. The data was analyzed by linear regression to determine the correlation and equation between chest measurement and fat carcass percentage, then was evaluated by t-test, standard error (SE) and the differences were measured to predict the accuracy of the equation. The results showed that the correlation between CG, CW and CG/CD in intermuscular and total fat percentage was positive and significant (P