Ideal Protein Concept in broiler chicken nutrition: Advances in essential amino acid profiling, modeling approaches, and sustainable feed formulation: Ideal Protein Concept in broiler chicken nutrition

Rico Anggriawan; Diyah Ayu Candra; Nia Agus Lestari; Amam Amam; Ragil Angga Prastiya; Yusrizal Akmal

doi:10.62310/liab.v6i1.329

Authors

Rico Anggriawan Department of Animal Husbandry, Faculty of Agriculture & Animal Husbandry, Universitas Kahuripan Kediri, Kediri. East Java, 64211, Indonesia https://orcid.org/0000-0001-5465-2598
Diyah Ayu Candra Department of Animal Husbandry, Faculty of Agriculture & Animal Husbandry, Universitas Kahuripan Kediri, Kediri. East Java, 64211, Indonesia https://orcid.org/0000-0002-9184-3884
Nia Agus Lestari Department of Agrotechnology, Faculty of Agriculture & Animal Husbandry, Universitas Kahuripan Kediri, Kediri. East Java, 64211, Indonesia https://orcid.org/0009-0008-4842-3383
Amam Amam Department of Animal Husbandry, Faculty of Agriculture, Universitas Jember, Jember, East Java, 68121, Indonesia https://orcid.org/0000-0003-4595-6834
Ragil Angga Prastiya Department of Health and Life Sciences, Faculty of Health, Medicine and Life Sciences, Universitas Airlangga, Banyuwangi, 68423, Indonesia https://orcid.org/0000-0003-2658-2099
Yusrizal Akmal Department of Aquaculture, Faculty of Agriculture, Almuslim University, Bireuen, 24261, Indonesia

DOI:

https://doi.org/10.62310/liab.v6i1.329

Keywords:

Ideal protein concept, Amino acid requirements, Broiler performance, Lysine, Protein utilization

Abstract

A crucial precondition for creating nutritionally optimal diets for fast-growing animals, especially broiler chickens, is the precise determination of amino acid requirements. An imbalance of amino acids in the diet impairs the efficiency of protein deposition and increases nitrogen excretion, which raises nitrogen emissions in the environment. Poultry have dynamic amino acid requirements that are influenced by environmental factors, dietary composition, sex, and genetic potential. Logistically and financially, it is not feasible to systematically evaluate the entire range of these interacting parameters using traditional dose-response experiments. The ideal protein notion has become a strong and comprehensive foundation for predicting amino acid requirements in this setting. By defining the necessary amounts of essential amino acids as fixed ratios relative to a reference amino acid, this method allows for accurate dietary amino acid profile modification. Since lysine plays a crucial part in muscle protein accretion and its requirement is well-defined throughout growth phases and has been extensively validated by experiments, it is frequently used as the reference amino acid. To ensure maximum protein utilization and minimize nitrogen losses, this paper critically analyzes the ideal protein concept, paying particular attention to amino acid profiling in broiler chickens.

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