This research was conducted to evaluate effects of dietary supplement with Chufa tubers on the productive performance of  Egyptian Zaraibi does and their newly born kids as well as some rumen parameters and blood profile. Twenty four pregnant does were divided into four equal groups (G₁, G₂, G₃ and G₄) and fed according to NRC (1981) allowances, where diets contained 0, 5, 10 and 15g Chufa tubers (CT)/h/d, respectively. The obtained results showed that the highest values of daily feed intake as % of BW and g/kg W^0.75) during late pregnancy were recorded with G₄ (3.46 and 91.84, respectively) while the lowest value was detected with G₁ (3.24 and 86.16, respectively). The same trend was also observed during the suckling period. In the same time, the daily DM intake as %BW and g/kgW^0.75 during suckling period were higher than those consumed during the suckling period in all groups. The daily water consumption noticeably decreased during late pregnancy with increasing the  level of Chufa tubers (CT). The minimum pH values and the maximum total VFA,s values were recorded at 3 hrs post-feeding . The effect of adding CT to pregnant goats rations on ruminal pH values and ammonia-N concentrations were not significant. But, ruminal total VFA's concentrations post-feeding (3 and 6 hrs.) were significantly higher as a result of adding Chufa tubers (CT) to Zaraibi does rations .In the sametime, ruminal VFA's took the reverse trend of ruminal ammonia-N , since they were affected by the physiological status. Concerning hemato-biochemical parameters, the results indicated that most tested constituents of blood profile were not significantly affected by the tested experimental rations. Moreover, hemoglobin (Hb), red blood cells (RBC's), MCHC, serum total protein, globulin, calcium, phosphorus and magnesium concentrations were significantly decreased during late pregnancy than in suckling period. Whereas, serum enzymes and thyroid hormones took the reverse trend . The effect of treatment was positive on live body weight of does and their born kids. Daily body gain of kids was improved in G₂ (92.3g), G₃ (93.2g) and G₄ (97.0g) by (7.33, 8.37 and 12.79% , respectively) compared with that of G₁ (86g). The mortality rate of kids decreased (23.1, 15.4, 13.3 and 6.67%) with increasing the level of Chufa tubers (0, 5, 10 and 15 g/h/d) in the four groups (G₁, G₂, G₃ and G₄, respectively). Thus, output measured as kilograms of kids produced per doe per year recorded the lowest value with the control group. Accordingly, the economic efficiency was higher due to using Chufa tubers at levels 5, 10 and 15 g/h/d compared with control one (0 g).