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Conference noted::equitation

Title:Equine Notes Conference
Notice:Topics List=4, Horses 4Sale/Wanted=150, Equip 4Sale/Wanted=151
Moderator:MTADMS::COBURNIO
Created:Tue Feb 11 1986
Last Modified:Thu Jun 05 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2080
Total number of notes:22383

1819.0. "Eating Acorns" by SMAUG::MORENZ (JoAnne Morenz NIPG-IPEG US DTN 226-5870) Tue Oct 26 1993 17:27

I recently moved to an area with ALOT of oak trees and now that fall has
arrived - there are acorns in one of my grazing areas. I notice the horses
munching on them Saturday and I immediately moved them to another area.

Does anyone know if acorns are poisonous for horses? Do they have some long-term
affect on the liver or anythiong like that. They only ate a few - and they
didn't show any signs of colic or anything.

Are they a danger?

	Thanks for your help!
T.RTitleUserPersonal
Name
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1819.1I'll checkDECWET::JDADDAMIOSeattle Rain Festival: 1/1-12/31Tue Oct 26 1993 19:485
    I don't know off-hand whether or not acorns are toxic but acorns and
    oak leaves are mentioned in 254.22(leaves = colic) & 1811.2(horses
    eating oak tree bark and acorns). 
    
    I'll check some of my reference books about acorns.
1819.2too close for comfortSAC::WALTHER_EEllen, ELIM documentation @UCGWed Oct 27 1993 05:4420
I'm not sure if they are poisonous but I'll have a look through my books
at home. In September, some of the oak trees in our fields started dropping
lots of acorns, and immediately Rocky started showing strange and alarming
signs (trouble breathing, coughs to alleviate some kind of throat irritation,
swelling about the throat, etc.). We were fairly alarmed!!!

A few of the other horses showed lesser signs of the same symptoms,
and because we could discover no other change in their diets or lifestyle,
we could only attribute this to the acorns. And because Rocky tends to gobble 
much more than any of the other horses in the field, we had to conclude that 
he must have eaten a greater number of acorns, hence the more intense 
discomfort on his part.

The symptoms disappeared within a day or two, and they were all fine. But
I would not turn out my horse again into a field with a large number of acorns.

Ellen

p.s. I'm not entirely sure the acorns here (UK) are the same as those in the
USA, though!
1819.3A bit riskyCHEFS::ELKINLWed Oct 27 1993 08:3516
    As far as I know, acorns in large quantities can be toxic.  As with a
    couple of notes back (salt), I was advised to feed salt to increase my
    horses thirst, therefore, if she did (by acident) eat the few acorns in
    our field, the toxins would be flushed through her more quickly.
    
    A horse down the lane from mine had access to acorns a couple of years
    back and ended up with SEVERE colic - he almost died.
    
    One suggestion that was put to me was to put a couple of pigs in the
    field to graze with the horses - apparently they love acorns and will
    clear them for you (and everything else probably!).  The Vietnamese pot
    bellied pigs are supposed to be ideal and are great pets.
    
    Hope this is of help to you.
    
    Liz (I'm getting there!)
1819.4No answers here!DECWET::JDADDAMIOSeattle Rain Festival: 1/1-12/31Wed Oct 27 1993 17:179
    I checked some horse books and some forestry books and couldn't find
    a specific mention wbout whether or not acorns are toxic...but for some
    reason I have this nagging feeling that I've read somewhere that they
    were toxic or caused colic...don't be mislead by the fact that
    squirrels and many other mammals(including pigs) eat acorns...there are
    lots of things that cows eat that will harm horses....
    
    Any chance of raking up the acorns? Or are there too many for that?
    
1819.5MPGS::MENARDThu Oct 28 1993 09:5810
    Acorns are poisonous.  I have a book on plants poisonous to horses and
    I know it's in there.  I'll look up tonight to see if it states how
    much they have to eat in order to get sick.  
    
    The reason cows can eat things that are poisonous to horses is because
    of the way their stomach is "designed".  It breaks down toxins before
    it is absorbed by their system.  I believe, but don't remember exactly
    so this may be incorrect, that a cow absorbs nutrients, etc from their
    intestines but a horse absorbs directly from their stomach.
    
1819.6"pre-processing"DECWET::JDADDAMIOSeattle Rain Festival: 1/1-12/31Thu Oct 28 1993 16:177
    I think you may have it backwards. Horses have simple stomachs and most
    digestion takes place in the intestines. Cows have 4 organs which perform 
    stomach/stomach-like functions before the food matter gets to their
    intestines. Actually, both animals absorb nutrients from their
    intestines. That's the primary function of intestines. It's just a 
    matter of how much "pre-processing" goes on before the food gets to 
    the gut.
1819.7I will give my vet a call and post the results hereSMAUG::MORENZJoAnne Morenz NIPG-IPEG US DTN 226-5870Thu Oct 28 1993 18:074
Thanks everyone for the input - I will be working on de-acorning the front 
field this weekend. I wish the squirrels would pick up the pace!!!

JoAnne
1819.8Not a good thing to eatSUBURB::HARWOODJA sunken souffl� is a risen omeletteMon Nov 01 1993 09:2010
    According to my books Oak leaves are toxic, but would require very large
    numbers to be eaten before proving fatal.
    Whilst Acorns are more so.  Acorns in small doses aren't usually too
    much of a problem as its thought the horses own system will cope.  
    It is strongly recommended not to let horses or ponies eat acrons at 
    all as they may develope a taste for them.  And if ingested in any 
    quantity they can be dangerous.  Tannin is thought to be the component 
    that causes the trouble.
    
    Judy