Sam and Kim, of Waikaka, and Teegan, of Waianiwa, have been coached in stockmanship by their uncle Rob Hall, of Lilliesleaf Stud, Waikaia.
He provided the Angus heifers and calves, as well as transport to Donovan Park, Invercargill.
Teegan was first in the novice herdsperson competition, while Kim was second.
Sam won the junior herdsperson competition and then won the Goodall youth beef herdsperson trophy.
Mr Hall was delighted with their achievements.
''I am really proud of them,'' Mr Hall said. ''I won the Goodall trophy in 1986 and now Sam is getting her name on that same trophy.''
He said competing in the A&P shows was ''a great family thing''.
- by Yvonne O'Hara