Pakistan is occupying the eminent status in the countries; inhabiting the huge bulk of population with considerable growth rate. That prevalent population trend is causing an extreme strain on food resources. With ever increasing cost of feed ingredients and use of cereal grains in poultry feeds which are also used for human consumption makes it imperative to look for alternative sources for feeding poultry to save grains for human consumption and reduce the cost of feed as well. Agro-industrial by-products or wastes which are cheaper, not utilized for human consumption and are readily available merit consideration for poultry feeding. Rice bran is one of the ingredients may serve the desired purpose.

Rice bran is an important by-product of rice milling industry. It is derived from the outer layer of rice caryopsis during milling and has comparable nutritional profile as compared to other cereal grains. Its food potential can not be absolutely exploited due to the presence of certain toxic factors such as Lipases, phytates, trypsin inhibitor and crude fiber. However, various treatments implementation could be resulted in the elimination of certain toxic factors and yielding it into a useful feed ingredient for poultry.

Present experiment was conducted to observe the impact of defatted rice bran on the performance of broiler chicks after subjecting it to treatments with NaCI + HCI and water soaking cumsteam passed. Four starter and four finisher rations were prepared and designated as A, B, C and D. All rations were isocaloric and isonitrogenous. Starter ration and finisher ration A, were kept as a control containing 0% defatted rice bran. Rations B contained 15% raw defatted rice bran while rations C and D contained 15% (NaCI + HCI ) treated and water soaked cum-steam passed defatted rice bran respectively. One hundred and twenty day old chicks were randomly divided into twelve experimental units of 10 chicks each under the four groups A, B, C and D. The starter rations were fed up to 28th day of age while the finisher rations froms 29th to 42' day of age.

Results of the present study indicated that the maximum weight gain was recorded in birds fed on ration C, containing 15% (NaCI + HCI ) treated defatted rice bran. Second best results were noted in birds fed on ration D, containing 15% (water soaked cumsteam passed defatted rice bran). It was noted that the weight gai improved with inclusion of treated defatted rice bran.

Best feed utilization was observed in the chicks fed on ration C whereas poor feed utilization was noticed in chicks fed on ration B (containing 15% raw defatted rice bran).\

Treatments, either with NaCl + HCI or water soaking cum steam passed resulted in the improvement of nutritional quality of defatted rice bran by hydrolyzing phytate phosphorus to inorganic phosphorus. The treatments also reduced the contents of crude fiber and made available the important micro elements, like, Cu, Fe, Mg Ca, Mn to the birds physiological system by breaking the structure of phytic acid.

It was concluded from the present study that the hydrolyzation is an excellent technique for converting low quality feed ingredient to higher nutritional quality. Specially hydrolyzation of low priced feed ingredients such as defatted rice bran and its inclusion to poultry feeds may reduce the load of whole cereals and ultimately holds go od economic prospects for feed millers. After the promising results of the present study it was strongly recommended that the hydrolyzation technique should be promoted in feed stuffs having higher contents of phytic acid and crude fiber.