Morrisons, Sainsbury's and Asda are importing meat from countries with lower animal welfare standards such as Australia, Poland and Uruguay, according to the National Farmers' Union.
The news that Mummy Pig has given birth has caused upset among the farming community, with some claiming the show has been disenguinine in depicting how pigs give birth.
Growers say major supermarkets are 'spurning' British produce in favour of larger cauliflowers grown in countries like Spain, France, Italy and the Netherlands.