Response of feed enzymes supplementation on nutrients utilization in broiler chicks fed diets based on maize-soya-de-oiled rice bran

Effect of feed enzymes supplementation on nutrient utilization of broiler chicks fed diets based on maize-soya-de-oiled rice bran was investigated. A total of (n=384) day-old coloured broiler chicks were divided into 12 dietary treatments with four replicates in each following completely randomized design for 0–7 weeks of age. Two basal diets (D1) and (D9) were formulated separately for each growth phases containing 0.45 and 0.35% available phosphorus(AP) for starting phase and 0.35 and 0.25% (AP) for finishing phase. The other eleven dietary treatments includes D2 (C + multienzyme-Multi), D3 (C + xylanase-Xyl), D4 (C + Xyl + Multi), D5 (C + Phytase-phy), D6 (C + Phy + Multi), D7 (C + Phy + Xyl.), D8 (C+ Phy.+ Multi.+Xyl.), D9 (C-0.1% Av.P + phy), D10 (C-0.1% Av.P + Phy + Multi), D11 (C-0.1% Av.P + Phy + Xyl) and D12 (C-0.1%Av.P + Phy + Xyl +Multi). The supplemental rates of feed enzymes were multienzyme 500 mg/kg, xylanase 20mg/kg and phytase 100 mg/kg. Each of such diet formulated for starting (0-21d) and finishing (21-49d) growth phases was offered ad-libitum as mash to quadruplicate lots of 8 broiler chicks. Energy availability in broiler chicks affected numerically, maximum by 1.63% by supplementation feed enzymes. Retention of calcium (Ca) phosphorus (P) and nitrogen improved significantly (P<0.05) in most of the phytase treated groups. Retention of Ca and P were found comparable to that of control diet when dietary available phosphorus was reduced by 0.10%. Based on the results, it was concluded that supplementation of (phytase + multi enzymes+xylanase) with reducing 0.10% available phosphorus in maize- soya-de-oiled rice bran based diets (D12), improved nutrients utilization over the control diet and simultaneously reducing environmental pollution.