Eggs are considered to be a healthy, sustainable source of protein, with lower green house gas emissions than most meats. More than half of eggs produced in the UK come from free range systems, and many cage systems are expected to convert to cage-free barn systems in the coming years. However, mortality can be higher and more variable in cage-free systems, potentially inviting negative implications for animal welfare, business profitability and environmental sustainability.
The aim of this project is to use a combination of surveillance and on-farm data collection to better understand the causes of mortality in laying hens in loose housing systems. We will quantify mortality attributable to a range of causes and investigate risk factors for high mortality. We will compare mortality across cage-free systems (barn; free range; organic), and examine the implications for the welfare of birds in each system in the context of the potential welfare-sustainability trade-off.
CLOSING DATE: Friday, April 22, 2022.