author(s)
SP Trivedi, SS Patil, DD Garg, HH Savsani, MM Pawar and BC Gohel

abstract
The present study was carried out to evaluate the effect of supplementation of organic chromium (CrPro) in the diet of broiler chickens. A total of two hundred, day old broiler chicks of Cobb-400 strain were divided into four treatment groups with 5 replicates of 10 chicks in each and were assigned to four iso-nutritive diets, viz., T₁: Control (Feed without CrPro supplementation), T₂: CrPro supplementation in feed @ 400 µg/kg, T₃: CrPro supplementation in feed @ 800 µg/kg and T₄: CrPro supplementation in feed @ 1200 µg/kg. The feeding experiment was carried out for 42 days and feed intake, weight gain, feed conversion ratio and economics of feeding were assessed. Supplementation of CrPro at different levels did not have any significant effect on total feed intake and final body weights of CrPro supplemented groups as compared to the control. The total body weight gain (g/bird) in T₄ group was significantly (P<0.05) higher than the control group (T₁). Feed conversion ratio of birds in T_2, T₃ and T₄ groups found numerically improved as compared to the control group (T₁). When profit over control in terms of rupees per bird was calculated, it were found to be 5.20, 4.14 and 2.65 more profit in T₄, T₃ and T_2, respectively. It is concluded that supplementation of organic chromium improves the performance of broilers when added at the rate of 1200 µg/kg broilers’ ration .