Vol. 11, Special Issue 11 (2022)

Author(s):
R Kavitha, D Chandrasekaran and K Rajendran

Abstract:
A biological trial in broilers was conducted for a period of 42 days with six treatments 30 birds each. T₁ as control, T_2: control + 250 g /ton NSP enzyme, T₃: control + 500 g/ton NSP enzyme, T₄:1000 g /ton NSP enzyme, T5 - T2: 0.8 percent reduction of metabolizable energy and 0.4 percent reduction of protein T₆ - T3: 1.6 percent reduction of metabolizable energy and 0.6 percent reduction of protein. T₇ - T4: 3.4 percent reduction of metabolizable energy and 1.1 percent reduction of protein. T₈ - Control + Phytase enzyme (300 IU/Kg of feed), 14.6 percent reduction of available phosphorus. T₉ - Control + Phytase enzyme (600 IU/Kg of feed), 30 percent reduction of available phosphorus. Significantly (p<0.05) higher and lower dressing percentage was observed in T₃ and T₉. There was no significant difference in organs weight between enzyme added groups and control group. A significant increase (p<0.05) in the length of small intestine and caecum length was observed in T₉ compared to the control. Colo-rectum length did not differ significantly between enzyme added groups and control group.