Nine Egyptian dairy buffaloes in mid lactation period (from 8^th  to 26^th week of lactation) were randomly assigned to one of three groups (three animals each) in a complete randomized design for 19 weeks, to determine the feeding value of experimental diets and performance of lactating buffaloes. Buffaloes were fed a total mixed ration (TMR) consisted of 40% roughage and 60% concentrate mixture (CM) on dry matter basis either without  added fat (control) or with 10% of CM as crushed sunflower seeds (SS group), or 10% of CM as crushed canola seeds (CS group). Apparent digestibility of DM, OM, CP, CF and EE were increased (P<0.05) when sunflower or canola seeds were added, while NFE digestibility was not affected with treatments. Feed intake was the highest in the group fed crushed sunflower seed, followed by control group then that was fed crushed canola. Body weight of buffaloes decreased by 22 , 34 and 40 kg for those fed the control. sunflower and canola seeds diets, respectively. Milk yield and fat corrected milk were increased (P<0.05) when sunflower or canola seeds were added to the basal diet. Sunflower and canola seeds containing diets increased milk fat and total solids concentrations but did not affect milk protein, lactose, ash, and SNF concentrations. Feeding sunflower and canola seeds increased (P<0.05) triglycerides and total lipids in buffaloes blood plasma but had no effect on cholesterol, total protein, albumin and globulin. It could be concluded that, the performance of lactating buffaloes was improved when crushed sunflower or canola seeds was added to the diet at a level of 10% of the concentrate mixture.