The influence of dietary crude protein concentrations, grain types and arginine:lysine ratios on the performance of broiler chickens

The influence of dietary crude protein concentrations, grain types and arginine:lysine ratios on the performance of broiler chickens

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Shemil P. Macelline^a^,^b, Peter V. Chrystal^a^,^b^,^c, Chanon Inanan^a, Mehdi Toghyani^a^,^b, Peter H. Selle^b^,^d, Sonia Yun Liu^a^,^b^,^*

Animal Nutrition | 2023, 14(1) : 259 - 268

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Animal Nutrition | 2023, 14(1): 259-268

• Original Research Article •

The influence of dietary crude protein concentrations, grain types and arginine:lysine ratios on the performance of broiler chickens

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Shemil P. Macelline^a^,^b, Peter V. Chrystal^a^,^b^,^c, Chanon Inanan^a, Mehdi Toghyani^a^,^b, Peter H. Selle^b^,^d, Sonia Yun Liu^a^,^b^,^*

Affiliations

^aSchool of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Camperdown, 2006, NSW, Australia

^bPoultry Research Foundation within The University of Sydne, Camden, 2570, NSW, Australia

^cComplete Feed Solutions, Howick, 2145, New Zealand

^dSydney School of Veterinary Science, Faculty of Science, The University of Sydney, Camden, 2570, NSW, Australia

Published: 2023-09-10 doi: 10.1016/j.aninu.2023.05.007

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Abstract

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The objective of this study was to investigate the effects of dietary crude protein (CP) concentrations, grain types and arginine:lysine ratios on performance parameters of broiler chickens. The 2 × 2 × 2 factorial array of dietary treatments harnessed two CP concentrations (210 and 170 g/kg), two feed grains (wheat and sorghum), and two arginine:lysine ratios (104 and 110). Each dietary treatment was offered to 7 replicates of 14 birds per floor pen, a total of 784 off-sex male, Ross 308 broilers, from 14 to 35 d post-hatch. The dietary CP reduction compromised weight gain by 10.0% (2078 versus 2310 g/bird) as a main effect and FCR by 7.51% (1.474 versus 1.371), subject to an interaction. In a three-way interaction (P= 0.008), expanded arginine:lysine ratios improved FCR by 2.30% in 170 g/kg CP, sorghum-based diets but compromised FCR by 2.12% in corresponding wheat-based diets. Sorghum was the more suitable feed grain in reduced-CP diets as sorghum generated significant advantages in weight gain of 7.59% (2154 versus 2002 g/kg) and FCR of 6.94% (1.421 versus 1.527) in birds offered 170 g/kg CP diets. Both dietary CP and feed grain generated significant and divergent impacts in apparent ileal digestibility coefficients for the majority of 16 assessed amino acids. Dietary CP reductions increased non-bound amino acid inclusions (NBAA) in wheat-based diets (48.96 versus 9.80 g/kg) to a greater extent than sorghum-based diets (35.3 versus 9.50 g/kg) and increasing dietary NBAA inclusions were linearly associated with compromised weight gain (r＝-0.834; P < 0.001) and FCR (r = 0.862; P < 0.001). Increasing ratios of free arginine to lysine plasma concentrations were linearly (r＝-0.466; P = 0.004) related to improvements in FCR. The implications of the observed outcomes are discussed and possible explanations are advanced.

Key words

Amino acid / Broiler chickens / Energy / Protein / Sorghum / Wheat

Cite this Article

Shemil P. Macelline, Peter V. Chrystal, Chanon Inanan, Mehdi Toghyani, Peter H. Selle, Sonia Yun Liu. The influence of dietary crude protein concentrations, grain types and arginine:lysine ratios on the performance of broiler chickens[J]. Animal Nutrition, 2023 , 14 (1) : 259 -268 . DOI: 10.1016/j.aninu.2023.05.007

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Year 2023 volume 14 Issue 1

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Article Info

doi: 10.1016/j.aninu.2023.05.007

Receive Date：2022-08-18
Online Date：2026-02-03
Published：2023-09-10

Article Data

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History

Received：2022-08-18
Revised：2023-05-11
Accepted：2023-05-22

Affiliations

^aSchool of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Camperdown, 2006, NSW, Australia

^bPoultry Research Foundation within The University of Sydne, Camden, 2570, NSW, Australia

^cComplete Feed Solutions, Howick, 2145, New Zealand

^dSydney School of Veterinary Science, Faculty of Science, The University of Sydney, Camden, 2570, NSW, Australia

Corresponding:

^* Corresponding author. E-mail address: sonia.liu@sydney.edu.au (S.Y. Liu).

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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

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