The 2019 International Dairy Week All Breeds Youth Show grand champion heifer will be offered for sale on Wednesday.
The two-year-old Jersey heifer, Darryn Vale Tequila Satin, was shown by Ellie Hourigan, on behalf of her family's Darryn Vale Jersey stud, Milawa, Vic, which milks 220 Jersey cows.
Ms Hourigan said Jerseys had always been a tradition for the Hourigans.
"She's a home-bred cow," she said.
"We picked that one out to sell, so we thought we'd give her a whirl in the show and see how she would go."
Ms Hourigan said the win was "pretty exciting".
The 19-year-old works on the family farm and has been coming to dairy week for a few years.
She loved the social aspect of being involved as well as the showing.
"Who wouldn't like to show a cow if you like cows," she said.
Check out our gallery from the youth show
Ms Hourigan said dairy farming appealed as a career because she was always learning and it providing lots of options.
Judge Brent Walker, from Guelph, Canada, said the champion was "a beautiful young cow".
"She's got width of chest, hardness on top, a beautiful mammaried cow and a great set of feet and legs," he said.
The reserve champion grand heifer was Pooley Bridge Atwood Jade 2, shown by Jett Easterbrook, shown on behalf of his family RK and JL Easterbrook and Sons, Tatura, Vic.
Mr Walker said the reserve cows "just keeps growing on me, all the time".
"And this young man here who won't sell me his cow.
"I asked him what the price was after I made her champion in the previous class - I asked him what he would ask for this cow and he never even thought about it, he said 'she's not for sale'."
Mr Walker said the show had featured a lot of good cattle.
The Sheri Martin Memorial Youth Showmanship Competition attracted more than 100 participants.
The Senior Champion Handler (aged 18-20 years) was Cally O'Shannassy, the Intermediate Champion Handler (aged 14-17 years) was Rebekah Love, Primary Champion Handler (aged 11-13 years) was Mikaela Daniel and the Junior Champion Handler (aged 8-10 years) was Shae Tweedle.
Check out our gallery from the handlers' competition
Youth Show Results
Grand Champion Heifer Champion: Darryn Vale Tequila Satin, Ellie Hourigan; Reserve: Pooley Bridge Atwood Jade 2, Jett Easterbrook.
Senior Champion In Milk Heifer Junior Leader Champion: Pooley Bridge Atwood Jade 2, Jett Easterbrook. Reserve: Paringa Dreams Focus, Harrison Moon.
Senior Champion In Milk Heifer Senior Leader Champion: Darryn Vale Tequila Satin, Ellie Hourigan. Reserve: Cairnhill Paradi Windy, Zali Deenen.
Junior Champion Heifer Junior Leader Champion: Avonlea Jacoby Sarah, Luke Gardiner. Reserve: Kit Jacoby Marion 2, Claudia Ross.
Junior Champion Heifer Senior Leader. Champion Paringa Goldchip Alanna: Charlie Lloyd, Reserve: Brindabella Jacoby Nana Noo, Georgia Sieben.
Sheri Martin Memorial Showmanship Competition Senior Champion Handler: Cally O'Shannassy. Reserve: Rachel Boostoppel.
Intermediate Champion Handler: Rebekah Love. Runner Up: Toby Fleming.
Primary Champion Handler: Mikaela Daniel. Runner Up Leah Dickson.
Junior Champion Handler: Shae Tweedle. Runner Up: Ruby Polson.
Catch the video highlights from the youth show here: