Evaluation of three levels of brewery bran on consumption and apparent retention in Leghorn layers
Abstract
The substitution of different levels of commercial feed by brewer's bran in the White Leghorn layer feed was evaluated. Under production conditions, 32 hens divided into two groups were used: intact and cecotomized, each divided into four subgroups, to which the following treatments were applied: commercial feed (control) and by hundreds of substitution thereof for bran (10 ; 20 and 30) with a particle size of 1 mm. A 2 x 4 factorial design was applied. The consumption of nitrogen and neutral detergent fiber and the apparent retention of organic matter showed interaction between the factors under study. The diet factor significantly influenced the retention of dry matter and detergent neutral fiber. Dry matter retention was: 71.30; 62.98; 61.65 and 60.95, while for neutral detergent fiber it was: 74.90; 67.01; 65.71 and 65.94% for the control and experimental groups, respectively. The results allow to suggest up to 10% replacement of commercial feed with this by-product.
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