We have about 3 acres of pasture and run sheep and chickens. Not many of either. As said, sheep require good fencing (electric won't work DAMHIKT) and a trained Border Collie. There are dozens of breeds with different characteristics--some are good for meat, others for wool, some are predator resistant (Icelandics), some have good feet for wet conditions (Romneys), etc. See what people in your area are raising on land like yours. shearing and foot care have been the biggest issues for us--the latest sheep we bought came with foot rot and we had a month or so of quarantine, treatment, etc to get it under control.
My take on it after 4 years is you need about as much infrastructure for 1 sheep as you do for 50 or 100. You can sell them on craigs list--we transport ours in a homemade box made out of welded hog panel that I can put in the pickup with the tractor forks--there's a USDA butcher near here and he does them. I doubt we make any money on them what with medicine, grain, hay, and the cost of slaughter and butchering. Originally we had Icelandics but they don't have a strong flocking instinct and they were wool sheep so they had to be shorn. Shearing sounds easy till you try it yourself and realize how hard it is not to cut the animal.
We had two goats for awhile and discovered that they prefer grass to blackberries and they make a lot of noise. at least the sheep don't bleat constantly unless the flock is split up in different pastures. so the goats are no longer with us.
Last word on livestock is you have to actively manage your pasture(s). With sheep you ideally want to rotate the pastures so any worms will not reproduce (typical life cycle is about 2 weeks). Also if the livestock overgraze the grass the plants are permanently damaged so you don't want that. All livestock is subject to a whole encyclopedia of truly disgusting diseases--just take a class at the local Grange or extension office to learn all about it.
Miked74T
