A 13-year-old Holstein Friesian dairy cow from Otago has been named the 2020 Valden Cow of the Year.

Raymac Justice Esonny EX took out the prestigious national title on Tuesday night, beating five other finalists.

She was bred by Balclutha dairy farmers Stephen and Judith Ray whose stud Raymac Holsteins milks 460 cows.

"Winning this award is probably the highlight of our career breeding Holstein Friesians. We are quietly glowing," Judith said.

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Four of the six cows in this year's final were bred by the Rays.

The coveted competition, which began in 2000, is run by Holstein Friesian NZ. It aims to identify cows that have contributed to the breed on a continual basis.

"We were surprised, but thrilled, to have so many cows in the final. Last year was the first time two of our cows made the top six," Judith said.

Esonny is the matriarch of the Rays' high-performing "E" family.

Raymac ME Expresso VG87 is one of Esonny's many daughters. Photo / Supplied
Raymac ME Expresso VG87 is one of Esonny's many daughters. Photo / Supplied

She had 20 direct daughters in-milk in the 2019-20 season. One of her daughters Raymac ME Expresso VG87, was one of this year's Valden Cow of the Year finalists.

"At the start of last season 86 cows, which is almost 20 per cent of the herd, were Esonny's descendants," Judith said.

"We affectionately call her 'The General' because of her no-nonsense attitude, but not in a bad way. She just eats and gets on with it."

Three of Esonny's descendants have been part of a project between Holstein Friesian NZ and genetics company LIC, which is developing top cow families and breeding bulls for use in artificial insemination.

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She's the granddam of Raymac Hot Espen S3F. The bull made the 2018 team of Holstein Friesian NZ's joint sire proving programme with CRV Ambreed.

Holstein Friesian breeders Judith and Stephen Ray on their Balclutha farm. Photo / Supplied
Holstein Friesian breeders Judith and Stephen Ray on their Balclutha farm. Photo / Supplied

"Esonny has been around for a long time. She has always been an exceptional brood cow and has produced a lot of very good daughters," Judith said.

Esonny is also the granddam of the 2018 and 2019 Broomfield Heifer Competition winners.

She received a 19 Star Brood Cow Award in 2019. The award is for cows whose progeny gain points based on their daughters' classification and production, or their sons' breeding worth (BW) and conformation traits.

Several of Esonny's progeny have reached the national final of the prestigious HFNZ Semex On Farm Competition.

Raymac ME Orace VG87. Photo / Supplied
Raymac ME Orace VG87. Photo / Supplied

Esonny has had 12 calves naturally, which included three sets of twins. Her other daughters were born as the result of embryo transfers.

The Rays' dairy farm is 175-hectares (effective). Their herd produced 233,300 kilograms of milksolids (kgMS) in the 2019-20 season.

They strive to breed a 570-kilogram Holstein Friesian cow which does at least its liveweight in milksolids.

"We try to breed well-proportioned, capacious cows with sound udders. We find they tend to have better longevity," Judith said.

One of Raymac Holsteins' other finalists, Raymac Oman Tansy EX2, was named top individual cow in the annual progeny competition run by the HFNZ Otago Branch in 2018.

Another finalist Raymac ME Orace VG87 had a son, Raymac MFM Oracle S3F, proven through Liberty Genetics.