South Australians dominated in the Ayrshire ring at International Dairy Week on Tuesday.
The champion cow was Cher-Bar Rippa Lasselle, owned by Cheryl Liebich.
Ms Liebich's brother Scott Braendler family's stud, Boldview Farms, picked up the premier breeder and premier exhibitor awards.
The Jervois-based farm milks up to 400 cows twice a day, with the bulk Boldview Farm Ayrshire stud cows, owned by the Braendlers, and cows from the Cher-Bar Ayrshire herd, which Ms Liebich owns.
Although registered as two studs, the cattle are run and managed as one dairy.
Ms Liebich said it was a great effort by the champion cow to win the award as it calved down in June.
It had previously won champion cow at the Royal Adelaide Show four times.
Judge Max Hyland, who dispersed his award-winning Ayrshire herd last year, described the champion as a cow that had stood the test of time.
"She's a bit stale, but she still has a great udder and is really well put together," he said.
"If I was going to be taking a cow home, she would be the one."
Ms Liebich said she hoped to get the cow in calf again for next year's IDW and possibly flush it in the future.
An emotional Courtney Afford was thrilled when a heifer she described as her 'twin' because it shared the same birth day as her, was named the Intermediate Champion.
Ms Afford, from Billabong Farm, Woods Point, South Australia, had prepared the heifer, which last year won the Reserve Intermediate Championship at Adelaide Royal Show.
She said she liked the temperament of the Ayrshires, which make up only a small portion of the predominantly 150-head Holstein herd they milked.
Mr Hyland said he liked the heifer's sweep of udder and its length.
"I would love to milk all three of them but my wife won't let me milk any more," Mr Hyland said when announcing the heifer as the winner of the two-and-a-half-years in-milk class earlier in the day.
The owner of the junior champion Ayrshire said she couldn't wait for the heifer to calve next month.
"She's a beautiful animal," said Rebecca Cole, who with her husband Stewart milks 180 cows at Wagga Wagga, NSW.
The two-and-a-half-year old Regal Park Reality Solax was sired by Palmyra Tri-Star Reality.
Judge Max Hyland said the heifer showed great development and dairyness, while its rear udder was high and wide.
