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Does the use of whey protein in broiler chicken diets have a positive effect? Model-based meta-analysis

Published online by Cambridge University Press:  04 July 2025

Sugiharto Sugiharto ,
Danung Nur Adli Open the ORCID record for Danung Nur Adli [Opens in a new window] ,
Tri Ujilestari ,
Mohammad Miftakhus Sholikin  and
Jedda Ayu Inggrida
Sugiharto Sugiharto
Affiliation:
Department of Animal Sciences, Faculty of Animal and Agricultural Sciences, Universitas Diponegoro, Semarang, Central Java, Indonesia
Danung Nur Adli*
Affiliation:
Department of Feed and Animal Nutrition, Smart Livestock Industry Study Programme, Faculty of Animal Science, Universitas Brawijaya, Malang, East Java, Indonesia
Tri Ujilestari
Affiliation:
Research Center for Animal Husbandry, National Research and Innovation Agency (BRIN), Bogor, Indonesia
Mohammad Miftakhus Sholikin
Affiliation:
Research Center for Animal Husbandry, National Research and Innovation Agency (BRIN), Bogor, Indonesia
Jedda Ayu Inggrida
Affiliation:
Social and Economic of Agriculture, Agribusiness Programme Study (Kediri Campus), Faculty of Agriculture, Universitas Brawijaya, Malang, East Java, Indonesia
*
Corresponding author: Danung Nur Adli; Email: danungnuradli@ub.ac.id
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Abstract

A meta-analysis was conducted to evaluate the effects of whey protein supplementation on growth performance, nutrient digestibility, blood parameters and carcase quality in broiler chickens. The dataset was compiled from studies published between 1964 and 2025, following the PICO framework, which included the following components: population = broiler chickens; intervention = various whey products (types of whey, inclusion methods and different inclusion levels); comparison = control versus treatment; and outcome = growth performance, nutrient digestibility, carcase traits, humoral immunity, antioxidant properties, intestinal morphology and microbiota composition. Overall, the inclusion of whey protein in broiler diets significantly improved average daily gain, feed intake, breast percentage and villus height (g’ > 0.500; P < 0.001). In conclusion, this meta-analysis highlights the strong potential of whey protein as an alternative protein source in poultry nutrition.

Keywords

by-productcheesefeed additivefeed conversion ratiowaste

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Type
Modelling Animal Systems Research Paper
Information
The Journal of Agricultural Science , First View , pp. 1 - 23
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© The Author(s), 2025. Published by Cambridge University Press

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