ESTIMATION OF LIVE WEIGHT IN DOMBABATUR BASED ON CHEST CIRCUMFERENCE

Abstract

A study was carried out at Batur, Banjarnegara, to predict the body weight of Batur sheep using simple linear body measurement. Heart girth was measured in centimeters, using the tailor cloth tape, wereas body weight was determined in kilograms using a weighing scale. Sixty nine ewes and trirdty two males of live weight ranging from 3-50 kg and 4-105 kg, respectively, were used in this study. In both groups, the relationship between heart girth (x, cm) and live weight (y, kg) on millimeters block showed linear. Analyses of correlation and regression and their interpretation followed Snedecor and Cochran (1978). Result showed that relationship between body weight and heart girth were y = -37,50 + 0,9385x (R2 = 0,89) for ewes and y = -93,62 + 1,851x (R2 = 0,96) for males. The different between slope and coefficient of regression of males and those of females were significant (P<0,01). Verification of both formulas showed close between expected and actual live weight.