Efficacy of maize differing in particle size in low-density protein diets fed to broilers from day 1 to 21 of age

Naeem, M, Burton, EJ ORCID: https://orcid.org/0000-0003-2784-6922, Scholey, DV ORCID: https://orcid.org/0000-0003-2450-5989, Alkhtib, A ORCID: https://orcid.org/0000-0002-3381-0304 and Broadberry, S, 2024. Efficacy of maize differing in particle size in low-density protein diets fed to broilers from day 1 to 21 of age. British Poultry Science, 65 (5), pp. 615-624. ISSN 0007-1668

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Abstract

1. This study evaluated the efficacy of maize differing in particle size in low-density protein diets on performance, the digestive tract and litter characteristics in broilers. Four dietary treatments; control commercial diet with a typical crude protein content 22.50% (CON); CON + 20% maize with particle size 350 µm (M350), crude protein 19.90%; CON + 20% maize with particle size 2600 µm (M2600), crude protein 19.90%; CON + 20% whole maize (WM), crude protein 19.90%, were fed ad libitum to broiler chicks up to 21 d of age.

2. No differences in body weight gain, feed intake and FCR were found between the WM and CON. WM increased body weight gain compared to M350 and M2600. M350, M2600 and WM increased (p = 0.004) gizzard relative weight compared with CON on day 14. Both WM and M2600 reduced (p = 0.001) gastric isthmus diameter on d 14 and 21 compared with CON and M350.

3. No differences were seen in mucosa for the Lamina propria and the extent of Tunica muscularis of gizzard on d 21 and ileum mucosal depth on d 14 between WM and CON diets. However, WM reduced villus-to-crypt ratio compared with CON on d 21. The M350 reduced (p < 0.05) gizzard digesta particle size compared with CON, M2600 and WM on d 14.

4. Both WM and M350 decreased (p < 0.05) nitrogen excretion compared to birds fed CON. Feeding WM increased nitrogen efficiency compared with M350 and M2600 diets, but was similar to birds fed CON. Feeding M350, M2600 or WM decreased (p < 0.05) litter moisture and footpad dermatitis (FPD) scores compared with results from birds fed CON.

5. Overall, diluting the protein level in broiler diets with whole maize appeared better than fine or coarse maize in terms of growth performance, digestive tract development, nitrogen excretion and litter parameters. This may lead to economic benefits by reducing grinding costs and dependence on rich protein resources contributing to sustainable meat production and food security.

Item Type:	Journal article
Publication Title:	British Poultry Science
Creators:	Naeem, M., Burton, E.J., Scholey, D.V., Alkhtib, A. and Broadberry, S.
Publisher:	Informa UK Limited
Date:	2024
Volume:	65
Number:	5
ISSN:	0007-1668
Identifiers:	Number Type 10.1080/00071668.2024.2356655 DOI 2423755 Other
Rights:	© 2024 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way.
Divisions:	Schools > School of Animal, Rural and Environmental Sciences
Record created by:	Melissa Cornwell
Date Added:	08 Apr 2025 15:02
Last Modified:	08 Apr 2025 15:02
URI:	https://irep.ntu.ac.uk/id/eprint/53382

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