Wheat sample affects growth performance and the apparent metabolisable energy value for broiler chickens

A - Papers appearing in refereed journals

Azhar, M. R., Rose, S. P., Mackenzie, A. M., Mansbridge, S. C., Bedford, M. R., Lovegrove, A. and Pirgozliev, V. R 2019. Wheat sample affects growth performance and the apparent metabolisable energy value for broiler chickens. British Poultry Science. 60 (4), pp. 457-466. https://doi.org/10.1080/00071668.2019.1605152

AuthorsAzhar, M. R., Rose, S. P., Mackenzie, A. M., Mansbridge, S. C., Bedford, M. R., Lovegrove, A. and Pirgozliev, V. R
Abstract

1. The aim of this study was to examine chemical composition, quality characteristics, apparent metabolisable energy (AME) and nutrient utilisation of wheat samples currently available to the UK poultry industry and their effect on broiler growth performance.
2. Seventeen current UK wheat samples were used to formulate 17 diets, all of which included 670 g/kg of each wheat sample and 330 g/kg of a balancer feed. Eight hundred 1-day-old male Ross 308 broilers were allocated randomly to 160 raised floor pens. Each diet was replicated eight times, fed ad libitum from 0 to 21d age in a randomised complete block design. Excreta were quantitatively collected during the last 3 days for AME determination.
3. The content of protein, ash and gross energy (GE) ranged from 97 to 143 g/kg DM, 12.8 to 19.6 g/kg DM and 17.81 to 18.24 MJ/kg DM, respectively. The amount of starch and total non-starch polysaccharides (NSP) ranged from 671 to 728 and 80.1 to 98.2 g/kg DM, respectively. The quality characteristics of wheat samples were in the expected range.
4. There were differences (P < 0.05) in AME and N-corrected AME (AMEn) of wheat samples. The AME of the wheat had a maximum range of 1.13 MJ/kg DM between samples. Dry matter retention (DMR) and fat digestibility (FD) were significantly different (P < 0.05) between wheat samples.
5. The daily feed intake (FI) and weight gain (WG) of broilers fed two wheat samples were significantly (P < 0.05) lower as compared to other samples and their low FI and WG were not related to their chemical composition and quality characteristics.
6. The ash content of wheat samples was negatively associated with AMEn (r = − 0.489, P < 0.05). The coefficient of FD was positively related to AMEn (r = 0.552, P < 0.05).
7. Chemical composition and quality characteristics of the wheat did not relate (P > 0.05) to FI and WG of broilers. There was no relationship between growth performance of broilers and AMEn of the wheat samples.

KeywordsChickens; Feed intake; Metabolisable energy; Weight gain; Wheat
Year of Publication2019
JournalBritish Poultry Science
Journal citation60 (4), pp. 457-466
Digital Object Identifier (DOI)https://doi.org/10.1080/00071668.2019.1605152
PubMed ID30982351
Open accessPublished as non-open access
FunderBiotechnology and Biological Sciences Research Council
Funder project or codeDFW - Designing Future Wheat - Work package 2 (WP2) - Added value and resilience
Output statusPublished
Publication dates
Online15 Apr 2019
Publication process dates
Accepted05 Mar 2019
PublisherTaylor & Francis
ISSN0007-1668

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