Determination of best fitted regression model for assessment of live body weight from morphological traits in Sirohi goat in Udaipur

Abstract

The objective of this research was to predict the live body weight from morphological traits of Sirohi goat. Based on data of Sirohi goat of different age (0–3 months, 3–6 months, 6–9 months and 9–12 months) kept under All India Co-ordinated Research Project on goats for Sirohi goats (AICRP) at Livestock Research Station, Bojunda, Vallabhnagar, and Dabok areas of Udaipur, Rajasthan during the year 2017. Simple and multiple regression models were used to explore the live weight and 5 morphological traits while taking animal’s age and sex into consideration. Correlation between body weight and morphological traits at different ages were positive and strongly correlated (P≤0.01). Simple and multiple regression models were fitted with body weight as the dependent variable and morphological traits as independent variables. The coefficient of determination in different equations indicates that combination of heart girth, height at withers, body length, punch girth and rump height succeed in estimating body weight better than single morphological trait. It can be concluded that the best fitted multiple regression models including heart girth, height at wither, punch girth, body length and rump height may be considered best for prediction of body weight of Sirohi goat.