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               How do these horses do it w/o replacement during 
competition.

Remember, they are EATING FOOD at the vet checks!

As long as the horse is fit for the distance (this influences how 
efficiently a horse can regulate temperature and cool off during or after 
hard workl) and eating/drinking at the vet checks (this replenishes their 
elytes) as it does normally.

Below from the Texas A&M Univ. "Scientific Principles for Conditioning Race 
and Performance Horses":

"Horses in moderate condition (body condition score of 5) are better able to 
effectively use DIETARY and STORED energy specifically toward the 
performance activity, with a SLOWER ONSET OF FATIGUE and IMPROVED THERMAL 
REGULATION."

Terry
"May the Horse be with you"


> From: "Steph Teeter" <stephteeter@xxxxxxxxxxxxx>
> To: <rides2far@xxxxxxxx>,<drnikisahak@xxxxxxxxxxx>,<ridecamp@xxxxxxxxxxxxx>
> Subject: RE: [RC]   RC:Core Temp
> Date: Fri, 23 Mar 2007 01:13:52 +0100
>
> >>
> As to the electrolytes. Steph said:
>
> >>>>messes with  osmotic balance in gut (high concentration of salt in
> one dose). <<<
>
> What happened to the old line that if a horse's electrolytes were
> depleted, that drinking clear water would disrupt the osmotic balance?
>
> Angie
> >>
>
> it's been a while since college, so please take my comments as those of a
> lowly rider, not a vet or physiologist.
>
> but - the principle is: water follows salt. wherever the concentration of
> salt is highest, water will go and seek equilibrium, given the
> channel/ability to do so. without enough water the body can't circulate
> substrate adequately (blood becomes thick/sludgy) and if the guts are not
> active (can also be a result of over-exertion)then stuff, including salt 
> may
> simply stay in the gut rather than get circulated to the cells that need 
> it.
> (or even worse case scenario draw water back into the gut to normalize the
> salt concentration).
>
> the risk of over-hydration (diluting the amount of salt in the body fluid)
> by drinking too much is (I think) much lower than the risk of dehydration.
>
> There have been many studies demonstrating that horses lose great amounts 
> of
> salt during exertion. And we know there are also studies (the French) that
> demonstrate that drenching with electrolytes doesn't improve performance...
> and we know of many cases where horses have done well w/o electrolyte
> supplementation. (I just rode 120km in very hot and humid conditions in
> Malaysia with no e-lyte supplementation during the ride - the horse
> drank/ate all night, hydration was excellent). So this begs the question: 
> if
> e-lytes are lost in exertion, but horses can still perform well w/o
> supplementation, then why are we told that we must actively replace the
> salts that are lost, during the exertion?  How do these horses do it w/o
> replacement during competition. Is there enough of an e-lyte reserve in a
> fully loaded gut to re-supply the system during exertion?
>
> hmmmmm??
>
> Steph
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