Kerry McCarthy, MP for Bristol East, has irked the British farming industry with her veganism and vice presidency of the anti-hunting League Against Cruel Sports.
In an interview with Viva!life, a magazine for vegans, she admitted she was a "militant" when it came to clamping down on meat consumption.
She said: "I really believe that meat should be treated in exactly the same way as tobacco, with public campaigns to stop people eating it.
She said: "Too much milk is being produced and if you live by the market you have to risk dying by the market."
Tim Bonner, of the Countryside Alliance, said: "Kerry McCarthy’s views on meat eating and livestock farming are completely out of step with the vast majority of people.
"Her ideas are verging on the cranky. This appointment is only going to make it more difficult for Jeremy Corbyn’s Labour Party to reconnect with rural Britain."