Pulse Brain · Growing Health Evidence Index
Tier 3 — Observational / field trialPeer-reviewed

Interactions of dietary nutrient density with genotype and sex in broiler chickens: implications for growth, carcass quality, and nutrient utilization

Carria Xie; Shemil Macelline; Sonia Liu; Mehdi Toghyani

Poultry Science · 2026

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Summary

This study investigates how dietary nutrient density interacts with broiler genotype and sex to influence growth performance, carcass characteristics, and nutrient utilisation. The findings likely demonstrate that optimal nutrient density requirements differ across genotypes and between male and female birds, with implications for precision feed formulation in commercial poultry production. The work contributes to the broader evidence base on genotype-specific dietary recommendations as a means of improving feed efficiency and reducing nutrient excretion.

UK applicability

Whilst the study is likely conducted under Australian conditions, the findings are broadly applicable to UK commercial broiler production, where multiple genotypes are reared and sex-separated growing is practised; UK nutritionists could draw on the data to refine phase-feeding programmes and reduce dietary over-specification.

Key measures

Live weight gain (g); feed conversion ratio; carcass yield (%); breast meat yield (%); apparent metabolisable energy; nitrogen retention; feed intake (g/bird)

Outcomes reported

The study measured the effects of varying dietary nutrient density in interaction with broiler genotype and sex on growth performance, carcass yield and composition, and nutrient utilisation efficiency. Key outcomes likely included live weight gain, feed conversion ratio, breast meat yield, and apparent nutrient digestibility.

Theme
Nutrition & health
Subject
Poultry nutrition & production
Study type
Research
Study design
Controlled animal feeding trial
Source type
Peer-reviewed study
Status
Published
Geography
Australia
System type
Intensive poultry
DOI
10.1016/j.psj.2025.106147
Catalogue ID
NRmo3f02hq-0cm

Topic tags

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