STUDY ON EFFECT OF PHYTASE AND CARBOHYDRASE ENZYMES IN PERBOILED RICE POLISH BASED DIET OF BROILER

Abstract

A total of 192 day old straight run Arbor Acres chicks were fed ad libitum up to 42 days of age on 16 iso-nitrogenous and iso-caloric diets by using phytase and carbohydrase for better utilization of parboiled rice polish (PRP) based diet. For the abundant use of PRP in diet, supplementing combination of 4levels phytase (0, 750, 1000 and 1250 FYT/kg) and 4 levels of carbohydrase (0, 80, 100 and 120 ppm/kg) in PRP based diet use in broiler diet. 16 different combination of doses of phytase and carbohydrase on PRP based diets were fed to observe the effect of PRP based diet on broiler performance. Diet and fresh drinking water were supplied ad libitum to broiler chicks. The growth rate, feed conversion, livability, meat yield and profitability increased almost linearly by using increased level of mixed enzyme in PRP based diets. Supplemental phytase and carbohydrase caused improvements in weight gain and feed efficiency of broilers. Costly grain was replaced by adding abundant cheaper PRP and enzyme supplementation. Increased muscle development and heavier body weight was observed. Therefore, it was concluded that it is possible to reduce grain by using abundant PRP in ration and supplementation of phytase and cabohydrase in PRP diet may be an efficient and economic way of improving performance of broilers using cheaper diet under Bangladesh condition