The growth curve of body weight in Kacang goats managed by smallholders at Tambang District of Indonesia

Abstract

Kacang goat (Capra hircus) is one of Indonesian germ plasm and kept by smallholders for meat production. Thisresearch was carried out to obtain the growth curve of body weight from 1 to 24 months of age in Kacang goats managed by smallholders at Tambang District of Indonesia. Total of 100 goats (51 buck and 49 does) were used in thisstudy to obtain Logistic and Gompertz growth curves. Research showed that the Logistic and Gompertz growth curvehave similar of coefficient of determination value (R2= 0.98). However, the standard error (SE) value in Gompertzwas lower than Logistic curves. The inflection weight (IW) was reached of 13.16 to 15.30 kg (Logistic) and 12.76to 14.41 kg (Gompertz). The inflection age (IA) was reached of 12.95 to 15.57 months (Logistic) and 12.71 to14.41months (Gompertz). The growth rate (GR) were reached of 1.06 to 1.23 kg/month (Logistic) and 1.02 to 1.10 kg/month (Gompertz). It was concluded that Gompertz growth curve was the best predictor to predict body weight inKacang goats.