Britain has struck a deal to export millions of pounds worth of pig semen to China.
The unusual pact could be worth an estimated £45million for British farmers seeking to cash in on China's love of pork dishes.
Half the world's pigs are in China but much of the stock is of poor quality.
By inseminating them with semen from British pigs, the Chinese will get healthier and more productive breeds.
The deal was sealed by Environment Secretary Owen Paterson who is part of the British delegation taken to China by David Cameron this week.
It is hoped the first exports will start in the Spring of 2014.
Britain is also looking to sell pigs trotters to the country. Regarded as a waste product in the UK, they are a delicacy in China.
No10 spokeswoman said: "We're doing all we can to ensure that businesses up and down the country reap the rewards from our relationship with China.
"And that includes our pig farmers.
"This new deal to export pig semen will be worth £45 million to UK firms and means Britain's best pigs will help sustain the largest pig population in the world.
"And we're not stopping there, we're talking to the Chinese about serving up pigs trotters on Beijing's finest dining tables.
"That would be a real win-win - a multi-million pound boost for Britain and a gastronomic treat for Chinese diners."