Re: RC: Re: tie ups and carbs

[Teddy Lancaster <teddy@runningbear.com>]

Makes perfect sense to me...I sold this mare later and the new owners (who love
her as much as I did) have found they must manage carefully what she ingests...

Teddy

CMKSAGEHIL@aol.com wrote:

> In a message dated 12/19/99 7:15:06 AM Pacific Standard Time,
> teddy@runningbear.com writes:
>
> << Depends greatly on what KIND of alfalfa.. >>
>
> Also depends on the horse.  Tie-ups on alfalfa are generally due to calcium
> problems.  The calcium in the alfalfa causes the horse to not produce very
> much calcitonin--the hormone that regulates blood calcium.  Then when he gets
> in a situation where he needs to mobilize calcium--such as heavy exercise--he
> can't.  Some horses can deal with this better than others--we see horses here
> on identical diets of local alfalfa mixed with local grass (and our Oregon
> alfalfa is not overly rich)--some can't tolerate it at all, and will tie up,
> and others will go merrily on their way with nary a problem.  We also have
> one who can't tolerate it--we didn't have him on any last year, and he was
> fine, but he missed a couple of races here after tying up on a training ride.
>  Interesting to me was the difference in his post-tie-up recovery curve vs.
> horses I've seen ridden past the ragged edge at rides--this guy had HIGH CPK
> and SGOT but cleared both in less than a week, whereas I've seen many with
> similar profiles that were ridden "past the edge" so to speak that took
> several weeks to reach a normal profile.  At any rate, no more alfalfa--no
> more problem.  He can eat it just fine when not working (and is on it for
> winter) but he will darn sure come back off of it as soon as he goes back to
> work.
>
> BTW--the genetics group at UC Davis is doing some work on the heritability of
> tying up, and I would suspect that there is a strong heritability among those
> who have calcium regulation problems--this guy is related to several top
> endurance horses who have to have careful calcium management, but more of
> them have manifested it by thumping when out of whack rather than by tying up.
>
> Heidi

--
Teddy Lancaster
AERC# 139422 - Member since 1974
6000+ career miles

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