An on farm trial was conducted to evaluate the effect of concentrate and minerals mixture on growth and reproductive performances of black Bengal goat. The whole trial was divided in to two parts; in first part 45 castrated male goats were selected and divided in three groups. The castrated male goats of group FP were supplemented with gram husk 50 gram/goat/day whereas, group T1 were supplemented with concentrate 100 gram/goat/day and group T2 were supplemented with concentrate 100 gram/goat/day and mineral mixture 10 gram/goat/day. In second part 45 pregnant does were selected and divided in to three groups. The pregnant does of group PC were supplemented with gram husk 200 gram/goat/day whereas, group TP1 were supplemented with 300 gram of concentrate and group TP2 were supplemented with 300 gram concentrate/goat/day and mineral mixture 10 gram /does /day. The body weight gain in castrated male goat and pregnant does were significantly (P<0.05) higher in both the supplemented groups as compared to farmers practice group. The biochemical study revealed that non-significant (P<0.05) variation in Hb, total protein, albumin, globulin, A: G ratio and BUN level and significant (P<0.05) increase in blood glucose, Ca, P, Cu and Zn level were recorded in both the treatment groups. The significantly (P<0.05) higher peri-parturient body weight, placenta weight, birth weight of kids and significantly (P<0.05) lower kid mortality were recorded in concentrate and mineral mixture supplemented groups than farmers practice group.

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