[HeidiT]

We are planning on getting a couple of Kune kunes. Probably two gilts which we will breed from at some point with a view to rearing any piglets for meat.
We have a half acre plot with chickens and ducks. There is a smaller fenced off area that we would plan to keep them in over night and over winter.

I'm unsure how much they will eat, and how much it will cost to feed them. I've read that they will need a mix of sow pellets and grass nuts over winter, but have also read that sugar beet can be give, or that hay, fruit and veg will do, so I'm quite confused!

In the field we have some fruit trees, will these be safe from pigs, or do they need to be protected?

They will have a shelter, but will this be enough over winter if it gets very cold?

That's all I can think of for now, but will probably think of other questions.
Thank you 

[HappyHippy]

Half an acre won't be big enough to support two breeding sows and the associated offspring you'll have if you're rearing for meat I'm afraid. It'll quickly get churned up (combination of feet and rooting) and if not rested and allowed to recover it'll become what's known as 'pig sick' - the soil will be compacted, nothing will grow and you'll have to rotivate and reseed. Do you have at least another half acre available for them to use? If the answer is no, I'd wait until you do.
Kunekune should be fed around 1lb of pig nuts per day and have access to grazing, so a 25kg bag will feed 2 pigs for around 3 weeks. The cost can vary from £9 to £15 (for specialist feed) per bag. In winter, when there's no grazing available they can have grass nuts / hay (some love these, some not so much) for roughage and to help fill them up. We fed sugar beet in very cold weather, giving it regularly can make them fat - if you want to breed you need to make sure they stay nice and lean, fat pigs have problems conceiving, farrowing and can be more prone to squashing piglets. Cruel to be kind in terms of feeding, don't give in to their squealing or persuasive piggy eyes - as long as they have grass, a bit of fruit and veg (not from your kitchen) and pig nuts they're getting what they need 
If your fruit trees are less than 10-15 years old I'd definitely get them fenced off to protect them and be wary of windfall fruit - you wouldn't want them getting too much.
For winter, you don't say where you are, but I'm in central Scotland and ours were all fine as long as they had a good dry arc and friends to snuggle into for heat.
HTH

[HeidiT]

Thank you, that is very helpful.
Would half an acre be ok for a couple of castrated males, or one male, one female? We don't have access to more land at the moment.

[HappyHippy]

Yes, for growing some for meat or a couple as outdoor pets it should be fine.
You might need to make a little area with hard standing (or slabs) for winter if you've got heavy/clay soil or lots of rain, but you'll not really know until they are there and you can see how it goes.
Kunekune are great