Bhaskar Choudhary, Neeraj Kumar, Ram Kishan Yadav, Melanie Frisch and Ugur Kumbet

Premise of the study was to corroborate the growth promoting effect of protease on the performance and to explore its digestion enhancer effect in broiler chicks. A total of 400 DOC of same hatch were procured and randomly distributed into five groups i.e. T₀ (Control), T₁, T₂, T₃ and T₄ treatments with good body weight and 80 chick were randomly distributed into five treatment with four different protease enzymes concentration (T₁ 0.01g_, T₂ 0.02g, T₃ 0.03g, T₄ 0.35g) and one control without enzyme respectively. In this treatment four replication were carried out with 20 chick each in each replication randomly distributed. All broilers were offered water ad lib at all time. They were housed in deep litter. A bulb of 100 watt was left on in each block. Broilers were given floor space @ 0.75 sq ft. Each was managed under identical management condition. The data on feed intake, body weight was recorded weekly to determine gain in weight and FCR. The data were analysed statistically. The mean body weight DOC in different treatment T_0, T_1, T₂, T_3, and T₄ was 45.65, 45.92, 45.02, 46.72 and 45.95 g respectively. The differences in body weight of DOC were non-significant.

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