Impact assessment of the reduction or removal of ionophores used for controlling coccidiosis in the UK broiler industry.

Coccidiosis is a complex parasitic disease ubiquitous in all types of poultry production. It can have both a direct effect on bird health and welfare with significant negative impacts on the production parameters and indirect effect as it predisposes to other pathogens. Ionophore coccidiostats have been used safely for over 45 years by poultry producers. Concerns have been raised that their use in livestock production could promote the development of antibiotic resistance, but their unique mode of action makes it unlikely. Conversely their removal can result in increased use of therapeutic antibiotics to treat disease posing a greater risk of antibiotic resistance development. Economic and environmental models examining the impact of the removal of ionophore coccidiostats from UK production suggest the annual cost to the broiler sector would be between £68.02-£109.95 million and result in an additional 84,000 tonnes CO e being produced per annum. Any cost increase would make this wholesome and affordable animal protein less affordable to poorer sectors of society. Increased greenhouse gas production, demand for water and land as a result of less efficient production will impact on climate change targets.