This experiment was conducted to evaluate the effects of different protein sources in the diets on feed utilization, rumen parameters and nitrogen reteion of female sheep. The experiment consisted of 4 female sheep at 3 months of age with the initial weight of 16.4 ± 0.12 kg, whichwere arranged in a Latin square with 4 treatments and 4 periods. The treatments were different protein sources in diets from the copra meal, psophocarpus scandens, soybean meal and soybean extraction meal corresponding to CM, PS, SM and SEM treatments, respectively. The experimental period was 14 days including 7 days for dietary adaptation and 7 days for sampling and measurements. Urea were supplied to balance the level of dietary crude protein (CP) in all treatments at 6.0g CP/kg live weight. The results showed that DM, OM, CP andmetabolizable energy(ME) intake of female sheep was not significantly different (P>0,05).DM intake of female sheep were 546, 575, 450 and 543g/day for the CM, PS, SM and SEM treatments. The CP intake value in this experiment werefrom 93.1 to 106 g/day. The daily weight of female sheep was  not significantly different (P>0.05) among the treatments, those were from 68.5 to 94.6 g/day.The conclusion was that the proteinsources of copra meal, psophocarpus scandens, soybean meal and extracted soybeanextraction  mealin female sheep diets gave the similar criteria of feed digestibility and growth and rumen parameters. However, psophocarpus scandens (PS) treatmentshould be considered due to the lower cost and a better use of local feed resouces