Enzymes which are biological catalyst composed of amino acids with minerals and vitamins. The use of enzymes has many benefits in poultry diets include not only enhanced feed conversion and bird performance but also reduced output of excreta problems of environment. The present research work was conducted to evaluate the effect of phytase enzyme on growth performance and blood profile of broiler. Birds were arbitrarily separated into four groups, i.e. Group A (control) was offered 0 g/kg, 0.05 g/kg (group B), 0.075 g/kg (group C) and 0.025 g/kg (group D) phytase enzyme provided in broiler feed. Parameters which were selected in present research work as, feed intake, live body weight, feed conversion ratio, growth performance and blood profile. Results showed that the maximum chicken body weight was noted in group C and feed intake was minimum in group C, as compared to other groups. Feed conversion ratio was significantly (p < 0.05) higher in group C, followed by other groups the non-significantly variance founded respectively, the highest weight of liver, gizzard, heart, intestine were noted in treated group C comparatively, highest spleen weight was in group B and in group A (control) the minimum weight of spleen was noted and the average blood profile of broiler chicks in different groups, the white blood cells was significantly higher in group D followed by group A, group B and C. Red blood cells was significantly (P < 0.05) better in group C. Haemoglobin was significant differences in different groups of trial. A significant (P < 0.05) difference in Packed cells volume in group A followed by group B, C and D. Total protein in group A was minimum followed by group B, C and D, respectively. From the present study, it was concluded that supplementation of 0.075 g/kg phytase enzyme has a better effect on growth performance and blood profile of broiler.
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