Vol. 7, Issue 5, Part A (2025)

The present study was conducted to evaluate the Effect of phytase enzyme supplementation at varying dietary energy levels on the feed intake and feed conversion ratio of Pratapdhan chickens (day-old). They were used in a completely randomized design in 5 treatments with 4 replicates, each consisting of 10 chicks. The treatment comprised of T₁ Control basal diet (CP 20% and ME 2800 kcal/kg), T₂ Control diet (CP 20% and ME 2800 kcal/kg) + supplemented with Phytase @ 1500 FTU/Kg, T₃ (T₂ containing CP 20% and 2668 kcal/kg (5% reduction in ME)), T₄ (T₂ containing CP 20% and ME 2520 kcal/kg (10% reduction in ME)) and T₅ (T₂ containing CP 20% and ME 2380 kcal/kg (15% reduction in ME)). The results of the experiment revealed that the total feed intake was significantly highest (p<0.05) in T₂ (2447.99±4.10 g) as compared to T₅ (2443.17±4.77 g), and T₃ (2439.72±3.58 g) and lowest in T₄ (2341.17±5.09 g) and T1 (2326.88±4.14 g). The supplementation of phytase enzyme significantly reduced (p<0.05) FCR in T₃ (3.81±0.01) as compared to other treatment groups.