problem with my rooster and hens pecking feathers out his feathers by his butt and made wounds

I would keep him isolated til I saw no sign of a wound. The feathers may not grow back til his next molt. If he gets to the point where he is completely healed but still a bit bare from lack of feathers, I'd use the BluKote to hide the "naked" skin and then put him back with the vlock.

Sometimes BluKote keeps the others away from a wound, and sometimes it doesn't. It's still a good antiseptic to use on chicken wounds, though.

Another thought is that feather picking can be a sign that their diet is short on protein. Sometimes this happens because people give too many "treats" like greens and fruits that have no protein, causing their total protein intake to decrease. You could switch to a game bird feed for their treat if you use scratch for a treat. You could offer some BOSS. You could scrabmble them some eggs. You could look for a higher protein % in the feed store. Layer feed is not real high in protein. Many people never buy it; instead, they feed game bird feed or a flock raiser or grower, and offer oyster shell separately for hens who need extra caclium. I buy a can of canned mackerel now and then. Some table scraps would be good protein sources, but be careful that they don't get pieces that are too large. Just some ways to increase protein intake.