Nearly 800 mega-farms
Our investigation has also shown the UK is now home to at least 789 mega-farms or what the US calls CAFOs (Concentrated Animal Feeding Operations).
To meet the definition of a Cafo, a facility must have at least 125,000 broilers (chickens raised for meat), or 82,000 layers (hens which produce eggs) or pullets (chickens used for breeding), or 2,500 pigs, 700 dairy cattle or 1,000 beef cattle.
The majority of the UK mega-farms - 575 - are poultry, with 190 pig, 21 dairy and 3 beef units.
Seven of the 10 largest poultry farms - producing meat or eggs or both - in the UK have the capacity to house more than one million birds. The biggest two farms are able to hold 1.7 million and 1.4 million birds respectively. The biggest pig farm is able to hold 23,000 pigs, while the largest cattle farm - in Lincolnshire - can house approximately 3,000 cattle.