Our rams stay in for 19 days maximum, usually only 17. We run an entire Southdown ram (usually one of the shearlings that's going out to hire) in the next field for around four days before the breeding tups go in. Southdown because they've short legs and can't hurdle the fence like the Badger Face. All hold to the tup first time around and lambing is over in 21 days. This is, however, after years of culling out any ewe scanned empty - no second chances here.