It is quite
possible to use ram lambs in their first year.
Lambs are usually cheaper but of course you often
don't know exactly how the animal will turn out. We
would never put ewe lambs into lamb. they
are just not mature enough in their first year. We
have 
seen ewe lambs that have been lambed
and even if they lamb successfully they never really
seem to recover and often appear slightly stunted.
You can use a ram lamb on ewes, they
are more than capable at 7 or 8 months old! However
it may be best to limit the number of ewes. The
drawback is that if the ram lamb has potential
problems such as tight horns it might not be evident
at a very young age but would of course be passed on
to his offspring.
