The Sullivan family, Greenfields stud, Hallett, dominated the August-shorn Merino ram judging, taking both the grand champion and reserve grand champion broadribbons.
Finishing top dog was a 22.7 micron son of Greenfields Rex - which won the SA Ram of the Year title at Burra in 2017 - and out of a show daughter of leading sire Greenfields Hussey.
The ewe was part of the Greenfields pair that represented SA in 2017 at the Australian Sheep & Wool Show in Bendigo, Vic.
The grand champion ram had plenty of top show form coming into Adelaide this year, having been crowned supreme exhibit at the Hay Merino Sheep Show in NSW in June.
Greenfields stud co-principal Robert Sullivan said the champion young sire, which triumphed in the strong wool section at Adelaide before taking the grand champion ram sash, would be retained in the stud.
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Strong wool judge Max Wilson, Wilgunya stud, Dirranbandi, Qld, described the ram as a "monster" with wool that "really jumps out at you".
The Sullivan family also took the reserve grand champion ribbon with their 20.1M medium wool ram.
The reserve champion medium wool ram ribbon went to the Ashby family, North Ashrose, Gulnare.
Medium wool judge Shayne Mackin, Kamballie stud, Tammin, WA, said they were both great rams that were hard to split.
He said the Greenfields winner had a strong muzzle and head.
"It's good to see there are still some good 'hornies' floating around," he said.
The comment received applause from spectators.
The Koch family, Bunyara stud, Moculta, took home the reserve strong wool ram ribbon.
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A strong wool ewe paraded by the Brooks family, East Bungaree stud, Hallett, took grand champion ewe honours in the August-shorn Merino competition.
The 19.8M ewe started its march to the grand sash by taking the six-tooth strong wool ewe class, beating its only rival from the Greenfields stud.
They were then awarded champion strong wool ewe and reserve respectively.
Mr Wilson described the champion as "terribly productive".
"It is cutting a hell of a lot of wool with magnificent staple," he said.
Mr Wilson also praised the quality of the reserve champion.
East Bungaree stud's Tony Brooks estimated the rising two-year-old ewe would produce 13 kilograms to 14kg of wool.
East Bungaree also added the medium wool champion ewe sash to its broadribbon haul.
The reserve champion medium wool ewe went to North Ashrose, which also picked up the reserve champion fine wool ewe ribbon.
The champion fine wool ewe sash went to an entry from Heather and John Dalla, Orrie Cowie, Warooka.
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