# Ep 46 | Harrison Davies: Aviagen’s 505 Club – top EPEF scores and the power of stockmanship

Page: https://stenobird.com/podcast/the-poultry-network-podcast-7041539/ep-46-harrison-davies-aviagen-s-505-club-top-epef-scores-and-the-power-of-stockmanship
Text version: https://stenobird.com/podcast/the-poultry-network-podcast-7041539/ep-46-harrison-davies-aviagen-s-505-club-top-epef-scores-and-the-power-of-stockmanship.md
Podcast: [The Poultry Network Podcast](https://stenobird.com/podcast/the-poultry-network-podcast-7041539)
Published: 2026-06-19T08:05:00+00:00
Episode link: https://poultry.network/ep-46-harrison-davies-aviagens-505-club-top-epef-scores-and-the-power-of-stockmanship
Audio file: https://episodes.captivate.fm/episode/a1e037e7-3089-4f3f-b2be-f33bcc015695.mp3
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Duration seconds: 1802

## Resource

This week on the Poultry Network podcast , Tom Woolman and Tom Willings are joined by Harrison Davies , technical manager at Aviagen , to discuss the launch of the Ross 308 505 Club . Harrison explains what EPEF — European Production Efficiency Factor — means, how it is calculated and why it provides a useful benchmark for broiler crop performance. The conversation covers the move from the 470 Club to the 505 Club, the impact of stocking density, the importance of brooding, and why FCR and average daily gain are helping drive recent performance gains. The episode also explores the role of technology, ventilation, bird behaviour and stockmanship, with Harrison stressing that while genetics set the potential of the bird, consistent management is what delivers performance on farm. Sponsored by the Poultry Network Supplier Directory 2026/7 .

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## Transcript

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