Abstract
ABSTRACT The objective of this study was to ascertain the influence of different dietary fiber sources and the usage of xylanase on diet of commercial layers and their influence on productive performance, egg quality, and digestive organ biometry. A total of 864 Lohmann® White hens was fed diets with three different fiber sources (wheat bran, soybean hull, or coffee husk) with or without xylanase inclusion (concentration of 160,000 BXU/g) in a 3×2 factorial arrangement, with six replicates of 24 birds [...]
Highlights
Wheat bran is the main raw material used in laying hen nutrition to decrease energy levels and increase dietary neutral detergent fiber (NDF) levels
The main non-starch polysaccharides (NSP) detected in wheat bran were arabinose (5.9%), xylose (9.8%), and glucose (7.5%), which are the main components of hemicelluloses, responsible for changes in intestinal viscosity
Xylanase had no effect on final weight (P>0.05); this trait was influenced by fiber sources (P≤0.05)
Summary
Wheat bran is the main raw material used in laying hen nutrition to decrease energy levels and increase dietary neutral detergent fiber (NDF) levels. Such an ingredient has been often found at high cost; the search for alternative dietary ingredients to be used to reduce egg production costs with no damage to the performance of birds is needed. The interest in the effect of high-fiber content in diets on the digestive physiology of animals has increased, especially among the monogastric animals, in which the knowledge of microorganisms involved in fiber breakage is still limited when compared with polygastric species (Castro Júnior et al, 2005)
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