JAN BIERMA
BullTalk - March 2025
The progeny proven bull Predar has managed to attain Germany’s highest score for longevity (RZN). With no less than 138 RZN, he reigns over all progeny proven and DNA tested...
Impressive Genosource Family Enterprise:‘The Role of Breeders is Much More than Only Adding Indexes.’
It was just eleven years ago that the American breeding enterprise Genosource began, but with a lot of dynamics and much success, it seems like the name has been well-known...
At the Swiss Castel Holsteins, the Direction has Changed, but the Passion Remains
Many will still remember her. The tremendous quality of the Swiss cow Castel James Jolie, who was able to win the National Swiss show, the prestigious Swiss Expo, and the...
Amighetti Numero Uno: The Name of the World’s First “Genomic Giant” was Splendidly Selected
Initially he was a bit of mysterious bull: Amighetti Numero Uno, who in the summer of 2011 seemed to fall like a thunderbolt out of a blue sky. It was...
Sheepster’s Background: How the Glare Family Appears in the News Again Thirty Years Later - And Now Globally!
No, he is not yet progeny proven, the nearly four-year-old Trooper son OCD Sheepster. In August, his first progeny proven index is expected. However, the Select Sires graduate is already...
Did Mascot’s Retreat Indicate the Disappearance of Ned Boy Blood? No! Whittier-Farms Ned Boy Continues to be Influential in Current Breeding
Genosource Captain: the world’s most powerful TPI bull. In his pedigree, we find the name of Whittier-Farms Ned Boy at least four times. Mogul: millionaire and member of the top-5...
Earl de Banos: Magnificent Ducasse Jaka Rightly Places the Limelights on a Unique Breeding Enterprise
Undoubtedly all those who attended the French “Centenary” – the splendid centennial show of the French herdbook organization – will be able to vividly recall: the thrilling victory march of...
Brand New AI Company Showbox Sires Quickly Gains Global Recognition
The summer of 2023 saw a new AI company emerge: Showbox Sires. Founded by two well-known and passionate Holstein breeders: Tim Abbott and Mike Duckett, assisted by their wives Sharyn...
BullTalk - February 2025
High in the German progeny proven RZG ranking we find a new favourite: Koepon Camden-RC. ‘An allrounder with high longevity, suitable for heifers, perfect rumps, mortellaro resistance, very good persistency,...
BullTalk - January 2025
‘I have always admired OCD Planet Diamond EX-92, as she has developed such a tremendously positive influence at Claynook in Canada. In 2017, I was at Claynook and wanted to...
How the Most Popular Cow in the World was Discovered… ...and Came into the Global Limelight at Mil-R-Mor Farm
Of course she has formidable competition, for example from Dellia, Laurie Sheik, and other female Holstein legends. But: nevertheless, Glenridge Citation Roxy still graciously carries the “Queen of the Breed”...
Rudolph Son Ramos: The Most Influential Holstein Bull on German Soil?
He was still from the old school, Ramos. First he was sampled as a young bull, so that five years after his birth, more than 100 daughters indicated his performance...