Originally Posted by trailhorserider
So is it true as many as 5% of Peruvian Pasos have DSLD? Perhaps that's where the idea they have dropped fetlocks comes from?
I'm sure that's where the dropped fetlocks comments are coming from. I like to deal in facts, and the facts about dsld are:
Nobody really knows what dsld is. There are a lot of self-proclaimed "experts" out there who claim it's a genetic disease. Research has been underway for years. And I want to make it very, very clear that the lion's share of the funding for the research has been provided by Peruvian breeders.
Research thus far has not discovered a gene - so there is no genetic test for dsld - nor has the research even revealed a genetic mode of inheritance. The condition doesn't seem to follow either a dominant or recessive mode of inheritance. To me that's really interesting. Usually one of the first things researchers discover about genetic diseases is the mode of inheritance. HYPP was shown to follow a dominant mode of inheritance even before the gene was discoverd. SIDS in Arabs was a known recessive trait years before the gene that causes it was discovered.
As far as percentages are concerned, one of the frustrating things about having Peruvian Horses is the number of vets who have heard the stories and who just assume any lame Peruvian has DSLD. I've run into those types myself. Sometimes it's hard to even get them to do an exam. I honestly think there have been many, many Peruvian Horses that have been "written off" by vets (and owners) who believe the stories and just figure the horse has dsld without ever getting a real diagnosis.
As far as the little horse this post was originally about (and he's a cutie!) a couple of things point to "Peruvian" - the fact that he's hot and that he doesn't like puddles.
NONE of my horses will walk through a puddle... not if there's a way to go around it. A couple of other things are definitely not Peruvian - his tailset is way too high and his withers are prominent. As a rule Peruvians don't have prominent withers.