Katahdin Sheep

I'm not sure if that's the right spelling or not.  No, I'm not going to be raising these, but a friend of mine is getting some for butchering for her family and I thought I'd see if anyone had advice.  I know that they're hair sheep and raised for meat, but that's about all I know.  How hardy are they?  How secure does their fencing have to be?  What kind of diet?  Worming and shots?  She also has workhorses, are these sheep easy going?

Thanks for any info.

Have a glorious day.

From Glory Farm