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Increasing the sieve pore size in wheat-based diets improved bone biomechanical traits and pancreatic enzymes, and enzyme supplementation regulated jejunum histology

Published online by Cambridge University Press:  07 July 2025

Esra Tuğçe Gül Open the ORCID record for Esra Tuğçe Gül [Opens in a new window] ,
Seyit Ahmet Gökmen ,
Osman Olgun Open the ORCID record for Osman Olgun [Opens in a new window] ,
Yusuf Cufadar  and
Ahmet Engin Tüzün
Esra Tuğçe Gül
Affiliation:
Department of Animal Science, Faculty of Agriculture, Selçuk University, 4130, Konya, Türkiye
Seyit Ahmet Gökmen
Affiliation:
Department of Plant and Animal Production, Ladik Vocational School, Ondokuz Mayıs University, 55500, Samsun, Türkiye
Osman Olgun*
Affiliation:
Department of Animal Science, Faculty of Agriculture, Selçuk University, 4130, Konya, Türkiye
Yusuf Cufadar
Affiliation:
Department of Animal Science, Faculty of Agriculture, Selçuk University, 4130, Konya, Türkiye
Ahmet Engin Tüzün
Affiliation:
Kocarlı Vocational School, Adnan Menderes University, Kocarlı, 09970, Aydın, Türkiye
*
Corresponding author: Osman Olgun; Email: oolgun@selcuk.edu.tr
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Abstract

In this study, the effects of wheat-based diets processed in a hammer mill with different sieve diameters (4000 (fine), 5000 (medium) and 6000 (coarse) µm) and enzyme addition (0 and 300 g/ton) on the performance, slaughtering characteristics, tibia properties, jejunum morphology and pancreatic enzyme secretion in broilers (1–42 days) were tested in a 3×2 factorial design. A total of 480 one-day-old chickens were randomly distributed into 6 treatment groups of 5 replicates, each containing 16 birds. The performance of broilers was not affected by particle size. Dietary enzyme supplementation improved body weight on the 1–10th day period but did not affect other performance parameters. Thigh and abdominal fat increased with fine particle size, breast weight increased with medium particle size and gizzard weight increased with coarse particle size. Enzyme addition decreased the carcass and gizzard weights. Tibia breaking strength decreased with fine particle size. Tibia wall thickness and ash increased with enzyme addition. Pancreatic enzyme secretions increased in the coarse group and with enzyme supplementation. Jejunum histomorphology worsened with coarse particle size, while enzyme inclusion improved histomorphology. The interactions affected feed consumption (25–42nd day), feed conversion ratio (11–24th day), breast weight, tibia breaking strength and ash, pancreas weight, lipase activity and villus parameters. These findings demonstrated that coarse grinding of wheat-based diets improved bone development and pancreatic enzyme activity without affecting performance while worsening jejunum morphology. Enzyme addition positively affected bone and digestive system development.

Keywords

Jejunum morphologypancreas enzymessieve diametertibiawheat

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Type
Animal Research Paper
Information
The Journal of Agricultural Science , First View , pp. 1 - 11
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© The Author(s), 2025. Published by Cambridge University Press

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