A 17-weeks study was conducted to observe the effect of feeding solvent extracted karanj (Pongamia glabra vent) seed cake (SKC) and alkali processed solvent extracted karanj seed cake (AKC) on various haematological parameters and overall body weight gains in goat kids. Twenty non-descript male kids were randomly divided into fi ve treatment groups viz., T1 (control), T2, T3, T4 and T5 consisting of four kids each, under completely randomized design to make the initial body weight uniform and non-signifi cant. The T1 group was offered groundnut cake (GNC) as a sole source of nitrogen whereas T2 and T3 group were offered SKC @ 8.09% and 16.18% of concentrate mixtures respectively to replace 25% and 50% of GNC nitrogen. Similarly T4 and T5 were fed AKC @ 8.09% and 16.18% of concentrate mixtures respectively to replace the 25% and 50% of GNC nitrogen. No adverse effect of either SKC or AKC was observed on haemoglobin, blood glucose, blood urea nitrogen, serum total protein, serum albumin and serum globulin. The present study also revealed no signifi cant effect of either SKC or AKC on the overall body weight gain in goat kids. These results indicates that long term supplementation of SKC or AKC up to 50% replacement of conventional nitrogen source have no adverse effect on health as revealed by body weight gain and various haematological values.