Growth Performance of Libyan Barbary Sheep

Abstract

This study evaluated the growth performance of 60 Libyan Barbary sheep Female lambs from birth to 8 months of age. Advanced statistical analyses including regression modeling, ANOVA, growth curve fitting, residual analysis, and calculation of Kleiber ratio were conducted. Results showed acceptable pre-weaning growth (ADG = 0.175 kg/day) comparable to regional literature, but lower birth weights (3.10 kg) than reported for Tunisian and Syrian populations. Post-weaning growth deceleration was significant (p < 0.001). Birth weight showed a moderate positive correlation with 8-month weight (r = 0.345, p < 0.01). Gompertz growth model predicted an asymptotic mature weight of 42.97 kg (Zullinger et al., 1984). Kleiber ratio at 3 months weaning was 19.36 (Kleiber, 1947), with a coefficient of variation of 12.65%, indicating moderate individual variability in feed efficiency. The paper provides detailed comments on all figures and practical recommendations for management.