My only experience of sheep has been pet lambs so I can't say too much really apart from I feel a warm glow seeing small lambs in the fields feeding off of their mums and always a bit sad for my little flock.
Like Jaykay says they quite often haven't had the best start in life. We had a sheep club graze our land last year and they bought in all cade lambs at £15 a head. I think 50% died in the first week before they'd even reached our pasture, they weren't sure if they'd had colostrum in some cases.
This year I spoke to our large animal Vet who recommended me to a local sheep farmer. This farmer made sure each lamb had 24 hours colostrum, was tagged with EID and non EID as he knew I was keeping over a year, he castrated them and then gave them to me for free saying "call me if you have any problems and should one die, come and get another...". The 3 boys we have are 6 weeks old today and thriving, busy lambs!
It is hard work, you have lots of feeds to start with and need to keep the bottles scrupulously clean. You need to be clued up on how to mix the feed correctly, how to deal with bloat should it arise, when to introduce creep feeds. You will need to vaccinate them at about 5 weeks and then again a month or so later.
On the plus side, when it comes to routine hoof care/dagging/shearing you will have some very tame sheep that come to you at the shake of a bucket. In fact one of the lambs from last year is now like a pet dog to me

On the negative side...you get very attached to them, when they are grown up and huge they still run to you thinking they are cuddly wee lambs and can bowl you over.....
I wouldn't change a thing
