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<p>Fibre inclusion in laying hen diets it is considered a solution to reduce feed formulation costs by improving nutrients absorption and metabolization within the gastrointestinal tract. A 5-wk study was conducted on 200, Tetra SL layers (28 weeks) randomly allocated in 5 groups (C, E1, E2, E3, E4, respectively), with initial average weights of 1732.26±109.35 g/hen, housed (4 hens/cage; 10 cages/group; 40 hens/group). All groups had the same basic feed compound structure (corn, oil, soybean meal and sunflower meal). The conventional diet (C group) contained 2780 kcal/kg Metabolizable energy (ME); 17.5% Crude protein (CP); 4.39% Crude fibre (CF). The experimental diets added 16.56% sunflower meal and 20% rice bran, increasing the dietary cellulose up to 7%. The fibre digestibility was improved using on E2 (0.015% enzyme); E3 (0.015% phytoadditive) and E4 (0.015% enzyme + 0.015% phytoadditive). The high fibre diets had no negative impact on productive performances and egg quality parameters. Yolk cholesterol significantly decreased (P&lt;0.05) on E1, E3 and E4 groups compared to C, E2 groups. Villi height increased significantly (P&lt;0.05) on E2 group compared to all other groups. In conclusion, the high dietary crude fibre (7%), additional enzymes/phyto additives, can improve the nutrient digestibility and intestinal morphology with beneficial effects on health and egg quality.</p>
</abstract>

Fibre inclusion in laying hen diets it is considered a solution to reduce feed formulation costs by improving nutrients absorption and metabolization within the gastrointestinal tract. A 5-wk study was conducted on 200, Tetra SL layers (28 weeks) randomly allocated in 5 groups (C, E1, E2, E3, E4, respectively), with initial average weights of 1732.26±109.35 g/hen, housed (4 hens/cage; 10 cages/group; 40 hens/group). All groups had the same basic feed compound structure (corn, oil, soybean meal and sunflower meal). The conventional diet (C group) contained 2780 kcal/kg Metabolizable energy (ME); 17.5% Crude protein (CP); 4.39% Crude fibre (CF). The experimental diets added 16.56% sunflower meal and 20% rice bran, increasing the dietary cellulose up to 7%. The fibre digestibility was improved using on E2 (0.015% enzyme); E3 (0.015% phytoadditive) and E4 (0.015% enzyme + 0.015% phytoadditive). The high fibre diets had no negative impact on productive performances and egg quality parameters. Yolk cholesterol significantly decreased (P<0.05) on E1, E3 and E4 groups compared to C, E2 groups. Villi height increased significantly (P<0.05) on E2 group compared to all other groups. In conclusion, the high dietary crude fibre (7%), additional enzymes/phyto additives, can improve the nutrient digestibility and intestinal morphology with beneficial effects on health and egg quality.

Effects of High Fiber Ingredients with Enzyme/Phytoadditive Addition on Laying Hens Productive Performances, Egg Nutritional Quality and Intestinal Morphology

National Research-Development Institute for Animal Biology and Nutrition (IBNA)

University of Agronomic Sciences and Veterinary Medicine of Bucharest

Archiva Zootechnica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fibre inclusion in laying hen diets it is considered a solution to reduce feed formulation costs by improving nutrients absorption and metabolization within...

Effects of High Fiber Ingredients with Enzyme/Phytoadditive Addition on Laying Hens Productive Performances, Egg Nutritional Quality and Intestinal Morphology

Published Online: Dec 30, 2021

Page range: 6 - 23

DOI: https://doi.org/10.2478/azibna-2021-0009

Keywords
enzyme, fiber, intestinal morphology, laying hens, nutrient digestibility

© 2021 Ioannis Chrysikos, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Effects of High Fiber Ingredients with Enzyme/Phytoadditive Addition on Laying Hens Productive Performances, Egg Nutritional Quality and Intestinal Morphology

Published Online: Dec 30, 2021

Page range: 6 - 23

DOI: https://doi.org/10.2478/azibna-2021-0009

Keywordsenzyme, fiber, intestinal morphology, laying hens, nutrient digestibility

© 2021 Ioannis Chrysikos, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
enzyme, fiber, intestinal morphology, laying hens, nutrient digestibility