Jemma Walton finds out:

Roger has 45 girlfriends, including Serena and Venus Williams. And he has to get them all pregnant on a regular basis.

You wouldn't suspect this to look at him; he's mild mannered, short and has a big bum.

But Roger is the only bull on Judith and Andrew Jacobs' 500-acre farm, based in Decoy Road, Newborough, Peterborough and so his cow girlfriends – two of them named after the superstar tennis playing sisters – don't exactly have much choice.

"When men come to the farm they joke that they want to come back as Roger," laughed Judith.

The old-fashioned image many of us have of a village farmer is a ruddy-faced old boy complete with tweeds. His wife might be found doing the paperwork in the farmhouse, or baking a loaf of bread.

But Judith is a delicate blonde mum of four, and is as much a farmer as her husband Andrew is, having been born into a dairy farming family and meeting him at agricultural college.

"I realised when I was younger that I had the knack," she said. "Because I'm a stockswoman at heart, I can look at a cow and know if she's going to give birth that day – it's a talent, something you're born with – you've either got it or you haven't. My eldest daughter has it."

Andrew and Judith have a mixed farm made up of arable land which grows wheat (for biscuits and bread), sugarbeet (for sugar) and oilseed rape (for cooking oil and biofuel). They also have a suckle herd of cows for beef, and some sheep.

Their delicious cuts of lamb and beef can be found on the farmers' markets held in the Cathedral Square, in Peterborough, on the second and fourth Thursday of each month, and they also have their own farm shop.

Customers love reaching into their freezer to find something for their Sunday lunch and finding a joint that has "Peterborough" stamped on it is something that is all-too rare these days.

"I'm biased, but I think that our beef tastes better than some bought in from Poland – and we are increasingly being told that we have to shop local to reduce airmiles," she said.

"And as for organic food, I don't eat it – the farming industry is very strictly controlled – each of my cows has their own passport, and organic food is treated by chemicals as well. And organic food won't feed the planet."

It's no secret that farmers in the UK have gone through some very tough years, with many pig farmers currently struggling to make ends meet because pork is so cheap.

Dairy farmers have also faced problems as supermarkets use milk as a loss leader, but Judith thinks that the farming industry has a lot to look forward to.

"I think feeding the world is becoming more and more difficult," she said. "And as farmers are being looked to to grow biofuels, then hopefully we will be more respected.

"But as it is I'm very happy doing my job, and not many people can say that. Some of the cows we have are 16 and 17 years old, and you do build a relationship with them. They are all different characters."