SUMMARy
the aim of this study was to evaluate some reproductive performance of male lambs, digestibility coefficients and feeding values of rations as affected by supplementation of different selenium (Se) sources. Twenty-four healthy Sohagi male lambs (7-8 month old and 24.47±0.15 kg body weight) were randomly assigned into four dietary treatment groups (6 animals each).The experiment was extended for 25-weeks after two weeks as adaptation period. Basal diet was formulated to meet the nutritional requirements according to the NRC (1985) except Se.