Suffolk sheep. Suffolk sheep adult rams weigh 100-136kg, adult ewes 70-96kg; Australian White adult rams weigh 90-100kg, ewes 65-70kg, Suffolk bigger size. Suffolk sheep are produced in Suffolk, Norfolk, Cambridge and Essex in the southeast of England, UK. It is bred from an old British crossbreeding of meat lambs. It is one of the ideal sire breeds for producing quality meat hybrid lambs.