RC: tying up and heat cycles

[Suzanne Mounts <mountss@usfca.edu>]

My mare tied up last Thursday 1/6.  She was treated by the vet and had
blood work done (showed expected high enzyme levels).  I also had her
selenium levels tested; results indicated selenium level was completely
normal (she has been getting selenium-E supplements since she tied up two
years ago).  There was no obvious explanation for her tie-up this time--she
had been ridden regularly, was getting her SeE supplement, etc.  The only
thing that is unusual is the visiting gelding.  

A friend's gelding who is convalescing from some undiagnosed lameness moved
into the barn in late in December.  Natty and I were away over the new
year's weekend.  Shortly after we got back (1/3 or 1/4) she came into heat.
 As I mentioned, she tied up on 1/6.  She is *still* in heat.  This is odd
for at least a couple of reasons.  First, it is the wrong time of year for
her to be in heat.  And, second, her cycles generally do not last more than
about 3
days.  Also, her heat cycles are generally pretty tame--lots of peeing, but
not much else.  This heat cycle has now lasted ten days or more, and has
involved much more squealing, etc.  

Any comments on a possible connection between her tying up and her great
passion for the visitor (she never acts this way about my gelding that she
lives with all the time)?

Suzanne Mounts and Natty (but Mom, don't you agree he's adorable???????)