A poll merino ram from the Moorundie stud in South Australia sold for $35,000 under the hammer, which was $5000 more then the previous record.

Seller Geoff Davidson said it was surprising to see such a high price.

"But he is the best sheep offered at Sheepvention I think," Mr Davidson said.

"All the rams here are a very good standard, perhaps this ram had some very unique features. His heavy cutting ability will make him a good stud sire. When you get two breeders interested in a ram the prices can go to this level."

Another ram was sold privately for $51,000.

Sheepvention president Will Kinghorn said the extra day this year had been a great success, despite some early reservations from farmers and vendors.

"The crowd through the gate on Sunday exceeded all of our expectations," Mr Kinghorn said.

"(The feedback) has been very positive, everyone has had strong trade over the three days. The ram sale has been a huge success. To get to the new record price is fantastic, and to have over 300 rams in the sale is brilliant."

Skipton-based corridale breeder Milton Savage claimed the Supreme Long Wool Ram title, after not entering at Hamilton for 10 years.

"Once I won (the title) at Bendigo I was fairly anxious to come to Hamilton because I didn't want to get knocked off the perch," he said.

"Cyril (the ram) is slightly on the finer side for a corridale, but he is well put together and balanced with an even fleece on him."