Home Journals Articles Updates About
CN
image
收藏切换
The influence of non-bound amino acid inclusions and starch-protein digestive dynamics on growth performance of broiler chickens offered wheat-based diets with two crude protein concentrations
收藏切换
PDF
Shemil P. Macellinea, b, Michael T. Kiddb, c, Peter V. Chrystalb, d, Mehdi Toghyania, b, Peter H. Sellea, e, Sonia Y. Liua, b, *
Animal Nutrition | 2023, 15(1) : 399 - 408
Less
收藏切换
Animal Nutrition | 2023, 15(1): 399-408
• Original Research Article •
The influence of non-bound amino acid inclusions and starch-protein digestive dynamics on growth performance of broiler chickens offered wheat-based diets with two crude protein concentrations
Full
Shemil P. Macellinea, b, Michael T. Kiddb, c, Peter V. Chrystalb, d, Mehdi Toghyania, b, Peter H. Sellea, e, Sonia Y. Liua, b, *
Affiliations
  • aPoultry Research Foundation, The University of Sydney, Camden NSW 2570, Australia
  • bSchool of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney NSW 2006, Australia
  • cCenter of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA
  • dComplete Feed Solutions, Howick, 2145, New Zealand
  • eSydney School of Veterinary Science, The University of Sydney, Sydney NSW 2006, Australia
Published: 2023-12-10 doi: 10.1016/j.aninu.2023.04.013
Outline
收藏切换

The primary objective of this study was to investigate the influence of high and low inclusions of nonbound amino acid (NBAA) in standard and reduced-crude protein (CP), wheat-based diets on growth performance in broiler chickens. Dietary treatments were formulated to either 210 or 180g/kg CP. The 210g/kg CP diets contained either 12.1 or 21.1g/kg NBAA and 180g/kg CP diets contained either 44.0 or 55.5g/kg NBAA. The formulations also generated different dietary starch:protein ratios which impacted on starch-protein digestive dynamics. Each of the four dietary treatments were offered to 7 replicates of 15 birds housed in floor pens from 14 to 35 days post-hatch or a total of 420 male Ross 308 chickens. Growth performance, relative abdominal fat-pad weights, breast muscle and leg shank yields were determined. Ileal starch and protein (N) digestibility coefficients, disappearance rates and starch:protein disappearance rate ratios were defined. Apparent ileal digestibility coefficients and disappearance rates of 16 amino acids were determined at 35 days post-hatch and free concentrations of 20 amino acids in systemic plasma were determined at 34 days post-hatch. The transition from 210 to 180g/kg CP diets depressed weight gain by 11.3% (1742 versus 1964g/bird) and FCR by 10.4% (1.606 versus 1.455), although both parameters were subject to treatment interactions. The treatment interaction (P < 0.001) observed for FCR was because high NBAA inclusions significantly improved FCR by 4.17% (1.424 versus 1.486) in birds offered 210g/kg CP diets, but significantly depressed FCR by 3.36% (1.632 versus 1.579) in 180g/kg CP diets. A quadratic relationship (r = 0.860; P < 0.001) between dietary NBAA inclusions and FCR was detected, which indicated that when NBAA inclusions exceed 18.5g/kg efficiency of feed conversion deteriorated. However, a multiple linear regression (r = 0.913; P < 0.001) was detected for FCR where both NBAA inclusions and analysed dietary starch:protein ratios were significantly (P < 0.001) related to FCR. This relationship indicates that growth performance of broiler chickens offered wheatbased diets is strongly influenced by dietary NBAA inclusions coupled with dietary starch:protein ratios and consideration is given to the possible underlying mechanisms.

Amino acid  /  Broiler  /  Non-bound amino acid  /  Reduced-crude protein
Shemil P. Macelline, Michael T. Kidd, Peter V. Chrystal, Mehdi Toghyani, Peter H. Selle, Sonia Y. Liu. The influence of non-bound amino acid inclusions and starch-protein digestive dynamics on growth performance of broiler chickens offered wheat-based diets with two crude protein concentrations[J]. Animal Nutrition, 2023 , 15 (1) : 399 -408 . DOI: 10.1016/j.aninu.2023.04.013
Full Text
Less
Appendix
Less
Year 2023 volume 15 Issue 1
PDF
20
3
Cite this Article
BibTeX
Article Info
doi: 10.1016/j.aninu.2023.04.013
  • Receive Date：2022-11-06
  • Online Date：2026-02-03
  • Published：2023-12-10
Article Data
Affiliations
History
  • Received：2022-11-06
  • Revised：2023-01-18
  • Accepted：2023-04-05
Affiliations
    aPoultry Research Foundation, The University of Sydney, Camden NSW 2570, Australia
    bSchool of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney NSW 2006, Australia
    cCenter of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA
    dComplete Feed Solutions, Howick, 2145, New Zealand
    eSydney School of Veterinary Science, The University of Sydney, Sydney NSW 2006, Australia

Corresponding:

* Corresponding author. E-mail address: (S.Y. Liu).
References
Share
https://castjournals.cast.org.cn/joweb/aninu/EN/10.1016/j.aninu.2023.04.013
Share to
QR

Scan QR to access full text

Cite this article
BibTeX
Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
关闭全屏
  • BibTeX
  • EndNote
  • RefWorks
  • TxT
Links
Articles
Latest Articles
Most Read
Collections
Updates
Events
News
Multimedia
About
About Us
Contact
No. 86 Xueyuan South Road, Haidian District, Beijing
100081
010-62199257
qkjq@cast.org.cn

Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House