Comparative Efficiency of Linear and Some non Linear Equations in Predicting Body Weight of Mule Duck at 21, 28, 35, 42, 49 and 56 Days Using Breast Angle at Corresponding Ages as a Predictor

The study was conducted on Vigova Super M ducks reared for meat. The body weight of the birds was assessed using their breast angle. Breast angle at 21 days was used to predict the body weight at 21,28, 35,42,49 and 56 days. Similarly breast angles at 28, 35, 42, 49 and 56 days were used for prediction of body weight. The data was analyzed using linear, logarithmic, exponential, inverse, power, quadratic, logistic, compound, growth and sigmoid curve fit analysis. The results indicated that the growth of the ducks is different at different phases of life. Quadratic regression analysis has a better prediction ( R2) value than the others at most of the times.