The usual advice in terms of the health of the bitch and pups is to breed her after she's two but no later than five (for her first litter). As people have said, if you're breeding her as a worker, you need to see how good she is in the field before deciding if she's worth breeding from and also what to put over her. If you're breeding her as a pet, then as others have said, there's an abundance of ok lurchers about, (plus some really excellent ones as it goes) in rescue already. Bear in mind that lurchers tend to have large litters so you're going to have to either find a lot of homes, or cul