Welcome to Ja-Bob Holsteins!


Mark Yeazel leading Ja-Bob Addiction Rachel-RED EX 91

Our herd is based on the genetics of Sky-Hi Mars Helen-ET RC EX 92, who to date has over 350 known Excellent maternal female descendants around the world and over 1000 VG maternal descendants in 11 countries including the USA, Canada, England, Scotland, Ireland, France, Spain, Switzerland and Australia!

There are over 100 bulls in AI that trace to Helen's maternal line and hundreds more that trace maternally through the male side!

Read the Holstein International feature article on Ja-Bob in the Feb 2022 issue!

Heat Tolerance is a Challenge!

The slick (SL) gene is the genetic part of the answer! We are working with ABC Genetics in providing sires that carry the gene and are available today!

Mambo SL-RED to the right is one of the bulls available today.


Add the slick (SL) gene to your breeding program!
Ja-Bob Mambo SL-RED

At Ja-Bob Holsteins, we have slick donors that are red and several that are polled. These are backed by world famous cow families such as the Helen’s, Scarlets, Roxy’s, Verdejo and Rudolph Missy, and pedigrees are available upon request."