An experiment was conducted to evaluate the performance of commercial broilers fed with different levels of (0.25, 0.30, 0.35, 0.40 and 0.45%) non phytin phosphorus (NPP) in diet from 0 to 6 weeks of age. Higher body weight gain and improvement in feed conversion was found in the broilers fed with 0.35% NPP as compared to 0.25% or 0.30% NPP. Leg abnormality alleviated and bone ash content increased by increasing the levels of NPP in the diet. No extra advantage could be observed on body weight gain, Feed conversion, leg score or bone ash by increasing the levels of NPP beyond 0.35% in the diet. Serum calcium was not influenced by increasing the levels of NPP in the diet, however, serum phosphorus level increased significantly. The calcium and phosphorus retention reduced by increasing the levels of NPP in the diet. Results of the present study suggests that commercial broilers need 0.35% NPP in their diet for optimum body weight gain from 0 to 6 weeks of age.
Non phytin phosphorus, performance, broilers
