Effects of different levels of rice bran with and without multi-Enzyme supplementation on performance, egg quality and serum biochemical parameters in commercial ̎Hy-line W-36̎ laying hens

Document Type : Research Paper


1 Professor, Department of Animal Sciences, Maragheh Branch, Islamic Azad University, Maragheh, East Azerbaijan, Iran

2 Former Graduate Student, Department of Animal Science Islamic Azad University, Maragheh Branch


The present study was conducted to determine the effects of rice bran and dietary multi-enzyme (Natuzyme) on performance, egg quality, and blood biochemical parameters of 288 laying hens during 12 week. This experiment was conducted in a completely randomized design in a factorial arrangement of 4×2, with four different levels of rice bran (0, 5, 10 and 15%) and two levels of multi enzyme (0 and 0.05%) with three replicates (n=12 birds). Egg production, egg weight, feed intake, feed conversion ratio and egg mass were not influenced by rice bran and enzyme supplementation. The effects of different levels of rice bran and supplementation of enzyme were not significant on Haugh unit, specific gravity, eggshell weight, eggshell thickness and shell weight/surface area. Also the effects of different levels of rice bran and supplementation of enzyme were not significant on albumin, blood total protein, uric acid, globulin, cholesterol, triglycerid and glucose. It was concluded that rice bran could be used up to 15% in laying hens diets without any detrimental effect on performance and egg quality.


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