We have Shetlands too. Started in 2010 with two heifers; first calves 2012; our two originals are now due their fourth calves in May, along with one of their daughters (second calf) and another daughter calved (unexpectedly last month) plus two 2014 born heifers, a 2014 steer, a 2013 steer and a yound bull, Wharncliffe Kingmaker - so 10 in total.
I love them; we halter train the heifers and they are pretty easy to handle in their second winter (first winter they're typical teenagers
).
The beef is amazing; I planned to milk as well but haven't got organised (yet).
We inwinter the females, 1) to protect the grazing and 2) to handle and halter train them. We feed mainly barley straw and a bit of hay. The steers get barley straw. All have access to a molassed lick - the cows eat a lot, the boys almost nothing. So far (don't want to tempt fate) they have been very easy calving (see the post in Diary about our recent surprise calf) and very good mums, but not protective of their calves from me (but they aren't that keen on strangers).
Things you might want to think about. They are very rare - about 550 breeding females. The breed needs breeders with commitment to maintain and grow it; the breed was almost lost due to changes in lifestyle and increased crossbreeding. In the longterm, the future for the Shetland has to be as a low-input suckler cow producing crossbred calves for the commercial market; but there needs to be a solid base of purebred animals first. I don't want to sound all ranty and heavy - but I know of a few folk who've bought cows and not bred from them then they end up as burgers. Not good for the breed
Shetland semen is available from RBST via Genus, so AI is an option. Because the breed is so numerically small, inbreeding can be a problem. In selecting a bull / bulls, I'd advise you to consult with the breed society, Shetland Cattle Breeders Association
www.shetlandcattle.org.uk - as a member (£16 a year) you get access to a database that allows you to do projected matings so you can see if the bull and cow are closely related. The Association will help with advice and interpretation. If you want to buy a bull, same advice applies. We bought a bull from Derbyshire this because he has different bloodlines to ours and our bull calf is going to South Wales in October at weaning for the same reason.
SCBA also has a Marketplace with cattle for sale. You have plenty room for four cattle plus many more. As Backinwellies says, make sure they are well handled and be clear about what you need, given your handling facilities. Frankly, I wouldn't want to halter train an adult cow
Also worth thinking about what you're going to do with the beef - our steer was 330kg dw last year
They won't need straw outside so long as there's dry areas to lie on. Never tried electic fence except as a top wire in a stock fence - they are pretty respectful of that after a few blasts. Shetlands do survive in harsh conditions but many crofters on the islands inwinter them, traditionally chained up.
I use sugarbeet as a bribe for haltertraining, loading etc.
Outwintering is fine but you need to think about how you're going to handle the stock, especially the youngsters. I couldn't catch our 7 month old heifers to halter them if they weren't inside.
I love the Shetlands - see the diary posts as proof - you won't go far wrong with them and you'll be helping to save a wonderful breed