The present study was under taken to investigate the effect of substitution of fish meal which is comparatively costly protein supplement with cheaper corn gluten meal on the performance of broiler chicks. One hundred and fifty day old (male and female) hubbard broiler chicks were reared on five experimental rations upto 50 days of age. The control ration contained 14.347. fish meal which was replaced by the corn gluten meal at 0, 3, 6, 9 and 127. levels (0, 25, 50, 75 and 100 per cent on protein equivalent basis). The starter rations were fed upto 28 days of age and remaining 22 days finisher rations were fed.

Results revealed non-significant differences among weight gain of chicks fed different experimental starter rations. However, significant differences among weight gain of chicks fed on finisher rations were noticed. The chicks fed on ration containing 100 percent and 75 percent fish meal were heavier as compared to those chicks fed on ration in which fish meal was replaced with corn gluten meal upto 50 percent on protein equivalent basis. Non significant differences in total weight gain were noticed amongst chicks fed on different experimental rations.

Highly significantly more feed was consumed by the chicks fed on starter and finisher rations containing 100 per cent and 75 per cent fish meal as compared to those chicks fed on other experimental rations. Non-significant differences in total feed consumption were noticed in chicks fed on various experimental rations.

Apparently better feed utilization in chicks were noticed by addition of corn gluten meal at different levels i.e. 3, 6, 9 and 12 per cent in the starter and finisher rations. However non-significant differences among the feed efficiency values were observed in chicks fed on various experimental rations.

Present results revealed that corn gluten meal at 3, 6, 9 and 12 per cent levels in broiler rations was equally well utilized as source of protein supplement as fish meal on the performance of broiler chicks.

The present study indicated that addition of corn gluten meal did not significantly effect the growth rate however slightly decreased with progressive increase of corn gluten meal in the ration. Feed efficiency was comparable with that of fish meal. Results further indicated that ration containing corn gluten meal were comparatively cheaper and cost per kg of live weight was decreased, therefore, net profit per chick was greater.