Twenty six lines each of two legume crop species: mungbean (Vigna radiata (L.) R. Wilczek) and vegetable soybean (Glycine max (L.) Merr.) were evaluated for grain yield and fodder traits during 2013 in Hyderabad, India. Three best performing lines and one poor performing line were selected in each species for further testing during 2014. Line x year interaction was significant for neutral detergent fibre, acid detergent fibre, acid detergent lignin, metabolisable energy and in vitro organic matter digestibility for mungbean. In the case of soybean, line x year interaction was significant for haulm yield, seed yield, nitrogen content, metabolisable energy and in vitro organic matter digestibility. Mungbean lines, VC 6510-151-1 and ML818 were the best for seed yield and fodder traits. Vegetable soybean lines, Swarna Vasundhra and AGS 406 were the best performers for fresh pod yield, haulm yield and in vitro organic matter digestibility. In-vivo parameters such as dry (DMI) and organic matter intake (OMI), dry (DMD) and organic matter digestibility (OMD) and nitrogen (N) balance were determined after feeding sheep with haulms from selected lines of mungbean and vegetable soybean as supplements to a sorghum stover based ration. Vegetable soybean line, Swarna Vasundhra recorded the highest OMD while the mungbean line, VC 6510-151-1 recorded the highest nitrogen balance.