The Perendale originated in New Zealand from crossing the Border Cheviot with the Romney breed. They are an open-faced, medium-framed breed that produces bright, lofty, long-stapled, medium-wool fleeces. Developed as an easy-care sheep, they are both hardy and highly adapted to marginal forage-producing areas.
It depends how badly the eardrum is ruptured. Mine ruptured a couple of years ago from a bad ear infection, and it took me at least 3 weeks to get the ringing out of my ear. Depends a bit of how good you protect the ear from pressure changes; usually between 2 - 4 weeks. If you really do have an ear problem, do NOT mess 'round.
The most common piercing, in the earlobes, takes six to eight weeks to heal. Piercing the cartilage portion of the ear can take between four months to one year. The healing time varies because of the different types of tissue in the ear. Different levels of pressure are also placed on the ear while a person is sleeping which affects the healing time.