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9 fowls per replication during 20 laying weeks (24 to 44 weeks). The inclusion of distillers dried grains in the diet did not affect egg production, egg weight and mass conversion. However, there was an increase in feed conversion with 10 % (P < 0.05). Yolk color was more intense with the inclusion of distillers dried grains and
20 % was superior to 10 %. Results suggest the possibility of adding up to 20 % in the laying hen diets without negative effect on egg production. Further studies are necessary related to the internal and external egg quality, as well as on the economic benefits of this by-product on substituting raw matters of higher costs (soybean and calcium phosphate).
Key words: non-conventional feeds, agro-industrial by-byproducts, laying hens, DDGS
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