Ryan Starkenburg
TPI or Net Merit: Which Index is the Most Appropriate for Todays Breeding Industry?
With American genetics being a major driver of Holstein breed progress around the world, their main genetic indexes TPI and Net Merit are widely known and are used extensively in...
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...
The Never-Ending Quest for Outcross Genetics: How Important is it?
Genetic gains during the genomic era have more than doubled from earlier times, and we now select for a much more complete array of traits including fertility, health and feed...
Unique: AIs Offer Their Own Recommendations: These Sires Should Be Used More Often (2)
In HI’s July issue, we published part one of a unique document, in which AI companies all over the world indicate which of their own bulls deserve to be used...
Hoogerhorst DG-OH Rubels-Red: Red & White Globetrotter & Successful Sire of Sons
With 2723 TPI and 3503 LPI respectively, Rubels-Red is the progeny proven nr.1 in both the US and Canada, while with 280 NVI he is in the top-10 of the...
De-Su Delta 4900 Increasingly Influential at DeNovo Genetics and ABS
De-Su Frazz Tahiti (2986 TPI) in the top-5, Denovo 2705 Venture (2941 TPI) Nr. 9 and Denovo 14744 Ginetta (2898 TPI) in 17th place. With three sons in America’s progeny...
BullTalk - December 2022
‘He has exceptional traits that make him very attractive to people who are interested in Red Holstein genetics,’ says Genex staff member Abby Van de Ven about the fascinating young...
Intriguing Sires DP - November 2022
‘In Switzerland, we are thrilled to have such a high production and fitness bull with correct conformation.’ Jürg Stoll from Swissgenetics is referring to Ewing who (after Ranger-Red) is the...
Intriguing Sires DP - July 2022
At first he attracted attention with his successful sons – including the much publicized Mendel-P (see BullTalk HI 06/2022) – and now with milking daughters in his proof Entity is...
Focus on... February 2022
There is a certain tradition by which we present a selection of outstanding red-carrier sires in our “Focus On” column between the respective evaluation periods. These are sires that not...
Intriguing Sires DNA 2022 - February 2022
As one of the few families with worldwide fame, the Barbie family is one of a select group that continually generate attention on Germany’s breeding scene, although it is seldom...
BullTalk - February 2022
‘Dreambig has been quite popular since he became available, but now, eighteen months after starting, has had his bestselling month. To me, that means that dairy farmers see good conception...