An experiment was conducted to evaluate Performance of 160 Day old Cobb-500 broiler chicks using Pigeon pea (Cajanus cajan) seed as an unconventional protein source. The dietary treatments were control (D1), 5% pigeon pea (D2), 10% pigeon pea (D3) and 15% pigeon pea (D4). At 5th week of age, the body weights of birds at different dietary treatments were 952.50, 987.75, 1030.25 and 1041.25g in D1, D2, D3 and D4 respectively, whereas 5th weeks body weight of broiler was significantly higher (P<0.01) in 10% pigeon pea (D3) and 15% pigeon pea (D4) groups than that of control (D1) and 5% pigeon pea (D2) groups. 5th week body weight gain of birds at different dietary treatments were 283.75, 313.25, 387.25 and 327.75 gm in D1, D2, D3 and D4 respectively, whereas Body weight gain after inclusion of 10% pigeon pea (D3) and 15% pigeon pea (D4) were significantly (P<0.05) higher than that of control (D1) and 5% pigeon pea (D2) groups. Feed consumption during 5th week age were 1768.25, 1819, 1845 and 1860 gm for D1, D2, D3 and D4 respectively, whereas Feed consumption were significantly (P<0.05) improved after feeding of 5% pigeon pea (D2), 10% pigeon pea (D3) and 15% pigeon pea (D4). FCR at 5th week of age were 2.34, 2.17, 1.98 and 2.18 in D1, D2, D3 and D4 respectively and FCR values was significantly (P<0.01) higher in control group than in the other dietary treatment groups whereas FCR value lower in 10% pigeon pea (D3) group. Performance Index (%) at 5th weeks of age was 42.67, 45.55, 52.19 and 47.48 in D1, D2, D3 and D4 respectively. At 4th and 5th weeks of age, the Performance Index (%) was significantly higher in 5% pigeon pea (D2) and 10% pigeon pea (D4) than other dietary treatment groups. Based on the results it may be concluded that, the pigeon pea can be used up to 10-15% as protein source ingredient in the broiler diet. 1433580527.php