Endurance.Net Ridecamp Archives

> HYPP is a dominant trait (so a horse need only inherit it from one
> parent for the disease to express itself; however, some horses live long
> happy lives with the disease and it can be "managed" with diet, etc.).
Slight correction here, and I apologize that I can't remember the correct
term for it (something like incomplete dominance, but not sure that is
correct, either).  At any rate--HYPP isn't exactly a dominant--if it was,
the HN horses would be clinically the same as the HH horses, and they are
not.  The gene has an additive effect when homozygous, so that on average,
the HN horses are not as badly or as frequently affected (or as difficult
to manage, on the average) as the HH horses.

Heidi


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The very essence of our sport is doing the trail as quickly as practicable,
while keeping one's horse fit to continue.  Taking the clock out of the
equation makes it another sport altogether.  The challenge is how to keep
the sport what it is while honing our skills (both as riders and as those
in control roles) in detecting where "the edge" is for each horse so that
we don't cross it. 
~  Heidi Smith
ridecamp.net information: http://www.endurance.net/ridecamp/

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