Skip to Content Skip to Navigation

Practical strategies to increase individual layer hens feed efficiency

This project was conducted to characterise the underlying factors that contribute to layer hen individual feed efficiency and variation in flock feed efficiency throughout the production cycle, and to indicate new feeding layer hen management strategies to improve feed conversion ratio and egg quality, based on a greater understanding of high feed efficiency and low feed efficiency cohorts. The key story emerging from these data is that inefficient hens are characterised by their putting on a lot more body weight from point of lay towards mid lay, and their eggs are of inferior quality. The reverse can be said for efficient hens, which retain a bodyweight close to or below the guidelines suggested for the breed target (in the case of this set of experiments, the ISA Brown). There is an association between productivity, body weight and liver health. Inefficient hens appear more prone to liver damage and fatty liver haemorrhagic syndrome. The depleted amino acids in the eggs of inefficient hens probably underpin the poor Haugh unit and are a target strategy for nutritionists to increase egg quality (and probably feed efficiency).

Project date

1 Jan 2017-31 Dec 2020
Visit website

Principal investigator

Peter Groves

Research organisation

The University of Sydney (USYD)

Project led by

Eggs

Australian Eggs

Australian Eggs is a member owned not-for-profit company providing marketing and research & development (R&D) services for the benefit of …

Eggs
  • Location

    Australia wide

  • Organisation type

    Research funding body

Logo for Australian Eggs

Focus areas

Industries

Technology areas

Related research projects

Search all research projects
Logo for In-ovo egg gender determination
Eggs

In-ovo egg gender determination

The aim of the In-ovo chicken egg gender determination project is to investigate the optical methodology to differentiate gender of …
  • Led by

    Australian Eggs

  • Start date

    1 Jan 2020

  • Research organisation

    The University of Melbourne

Logo for Traceability for the Egg Industry
Eggs

Traceability for the Egg Industry

The project comprises an extension program to build an understanding of the benefits of traceability systems and new technology available …
  • Led by

    Australian Eggs

  • Start date

    1 Jan 2021

  • Research organisation

    Australian Eggs

Have questions?

Find out how we can help you.

Find answers to our most frequently asked questions on research projects, commercial opportunities, organisations and more. 

Still have questions or have feedback on the site? Please get in touch by completing our enquiry form.