Floor Eggs in Australian Cage-Free Egg Production

Area of Science:

• Animal Science
• Agricultural Management
• Poultry Science

Background:

• Cage-free egg production is now predominant in Australia.
• Floor eggs (FE) are a significant challenge in cage-free systems, impacting producers.
• Understanding factors influencing FE is crucial for improving production efficiency.

Purpose of the Study:

• To investigate factors associated with floor egg (FE) occurrence in Australian cage-free egg production systems.
• To identify management and environmental variables that correlate with FE levels.

Main Methods:

• A national scoping survey was conducted across 43 cage-free egg-laying flocks.
• Data was collected via phone interviews using predetermined questions.
• Statistical analysis was used to identify associations between flock characteristics and FE levels.

Main Results:

• Floor egg levels varied widely (0.01-17%).
• Larger flock sizes (r = -0.5, p = 0.002) and tunnel ventilation systems were associated with significantly fewer FE (p = 0.013).
• Higher rates of peak lay showed a weak association with fewer FE (r = -0.31, p = 0.049), and higher FE levels correlated with increased labor costs (p = 0.023).

Conclusions:

• Shed design, particularly tunnel ventilation, and flock size are key factors in reducing floor egg occurrence.
• Environmental management strategies can be leveraged to minimize FE in cage-free systems.
• Reducing FE can lead to improved operational efficiency and potentially lower labor costs in poultry farming.