Effect of combined supplementation of probiotic and yeast on growth, carcass characteristics and economics of production in broiler chickens
Swain, B.K. | Naik, P.K. | Chakurkar, E.B. | Singh, N.P.
An experiment was conducted to study the effect of combined supplementation of probiotic and yeast on growth, carcass traits, organ weights and economics of production in commercial broiler chickens from 0 to 6 weeks of age. Basal diets were formulated containing maize, soybean meal and rice polish with 22.8% CP and 2900 kcal ME/kg at starter phase (0–3 weeks) and 19.9% CP and 3000 kcal ME/kg at finisher phase (4–6 weeks). The broiler chicks were fed basal diet supplemented with Improval (mixture of probiotic and yeast) @ 0 (T₀), 0.5 (T₀.₅), 1.0 (T₁.₀) and 1.5 (T₁.₅) g/kg diet. Growth and feed efficiency of broilers fed T₁.₀ diet were better (P<0.05) than those recorded on control diet. Higher (P<0.05) dressing percent and breast yield were observed in chicks fed T₁.₀ diet supplemented with 1.0 g/kg supplement. The abdominal fat content was reduced (P<0.05) in the supplementated groups compared to control. The relative weights of liver, heart, spleen and bursa were higher in all the supplemented groups while that of the ceaca was reduced (P<0.05) in the birds fed T₁.₀ diet. Findings of the present study suggested that supplementation of probiotic and yeast mixture @ 1.0 g/kg diet was effective in improving performance and economics in broiler chickens.
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