As I have gotten more interested in sport horse breeding I have started to read up on all sorts of related topics from learning about different registries to spiraling into a black hole tracking a horses bloodlines. Luna is registered KWPN/ Dutch WB. As such I have started trying to understand the different predicates available to KWPN mares.
It is different for all of the studbooks but for KWPN there are different predicates/status for mares. The predicates that a mare is eligible for are outlined on the registry’s website but for a quick rundown:
- Ster – A horse with above average conformation/movement/ jumping
- Keur – A mare that is above Ster with quality and has completed an IBOP performance test or sport requirements
- PROK and/or D-OC – A horse that has passed extensive radiographs or DNA testing
- IBOP/ Sport – A horse that has passed a riding test or sport performance
- Elite – A Keur mare that has also passed PROK or D-OC requirments
Generally a horse would be inspected as a 3yo to go from the foalbook (vb) to the studbook (stb). At this time they would also be inspected for Ster or Keur eligibility. At the end of the day whether Luna does well or not or is even presented at keurings does not mean she is or isn’t a quality horse. Primarily I am just excited for our future together in the Jumpers.
Yesterday I found out that Luna passed the D-OC DNA test from KWPN and now has the D-OC predicate. This is essentially a test to determine the heritability or likely hood of a horse to pass OC to its offspring. Here is an excerpt from the KWPN website regarding the D-OC testing.
What is the outcome of the DNA-test?
The outcome of the test DNA will be a genomic breeding value for OC (GFW OC). This value indicates the position of the horse relative to the current KWPN population. On average, 70% of the population of breeding values comes between 96 and 104. Scores a horse more than 104 then it may be expected that the horse inherits less OC to its offspring. Horses scoring 95 or below are expected to contribute negative for OC inheritance.
I personally remain a bit skeptical of the test due to personal experience though I do know that there are external factors impacting a horse developing OCD. That said I figured that as Luna will not be 2yo by the time that the PROK examination is discontinued as a step towards Elite I might as well go for it and see what happened. Who knows if she will even achieve the other requirements anyways.
Is there anyone else that’s involved or interested in breeding that knows of other registries with similar developing DNA testing protocols? I find it all very interesting but at the end of the day I don’t think that there will be a total eradication of the presence of OCDs and will wait to see how accurate this genetic/genomic testing ends up being. I guess if you don’t make steps in the right direction with research to understand the cause/problem there will never be progress though. Thoughts?