The government is being urged to intervene to stop a broiler chicken farm being built in Northamptonshire.
Plans have been submitted by Bedfordia Farms for 10 poultry buildings in Rushden, with each containing more than 50,000 birds.
Almost 7,000 people have signed a petition opposing the plans.
"These conditions are simply abhorrent," Peter Bone, the Conservative MP for Wellingborough, told the Commons.
"It is no way to treat thinking, feeling creatures. To me, it feels completely un-British."
Farming minister George Eustice said the government couldn't interfere in the planning process, but any development would have to abide by strict standards.
East Northamptonshire Council's planning management committee is due to look at granting approval for the project on 13 December.