HYPP and appaloosas

YorksG

YorksG

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Following from the post about the Quater Horses with this condition, I have read the stuff about the genetic mutation and am now wondering if this is anything to do with Ambers apparent intolerance of Alfalfa, which appears to have been linked with her bad back, muscle bulk on one shoulder and her very cresty stiff neck. These have been much better since she has not had alfalfa. Sorry about the rather rambling post but have been wondering about this since this afternoon.
 
What is her pedigree? Does she have Impressive in her? That is the only way she can have HYPP by having Impressive in her bloodlines.
 
What are the names of the Appaloosas/QH's in her pedigree then and I can perhaps tell you if they are linked to Impressive. Is there Conclusive in there? He was a prolific breeder and he comes from Impressive.
 
Sires great great grandparents are Sutters Showboy, Dixie Temp,three TB's , Louella Dotted Prince,Bantac Kaliff, Virginian. No knowledge of Dams parentage as she was registered with BAPS prior to them closing the books to horses without known parentage, but with appy characteristics. Thanks for your help, Tia
 
You can test for it. Might be worth a try
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http://www.vgl.ucdavis.edu/service/horse/hypp.html
 
Thanks meandmyelf, I think this is something I will check with the vet as well , she has been much better since we stopped the alfalfa. Have spent six months having her neck and back dealt with, changed the saddle etc. but the real breakthrough came when we stopped the alfalfa two weeks ago. I have now got my free moving sweet natured spooky but safe non-napping mare back!
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My mare is also by Bantac Kalif out of Virginian who was, according to her papers an imported three quarter TB (does this mean that we could be related !!). I could be wrong, but I think that most of the Appys bred in the UK at that time were of mostly British or European bloodlines and therefore very unlikely to have HYPP

American Bred Appaloosas didn't appear over here until relatively recently and as I'm a little out of touch with it all now I wouldn't know which ones were related to Impressive and which were not.
 
I think we may be cousens!
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The really wierd thing about Amber was that she bulked up oddly, we had a TBxWelshD who was intolerant of goodness knows how many foods and could only tolerate alfalfa, so I have always thought of it as a "safe" food, but it does seem to be at least a contributor, if not a cause of Ambers problems. The other thing is we have no idea what her mothers breeding is at all. We had an old Appy who bought 23 years ago and she was registerable (we didn't bother) but we had no idea at all about her breeding either.
 
Alfalpha is a safe food, it is one of the few recommended for laminitic horses, of which my old lady is one. However, it is very high in protein, 16 percent I think which is possibly where the problem is in your mare, it is the reason I can't feed it to my Quarter Horse, sends her off with the fairies.

For whatever reason, if by taking her off of it has solved her problem then you must be something like on the right track.

HYPP does not cause the over muscling featured in the other post, although having said that Impressive was very muscular as were a lot of his progeny. The cause of HYPP is a particular gene which was carried by him and passed onto some, not all, of his progeny. In the USA they are supposed to test horses of his lineage to see if they carry the gene.

PS I'll tell her tomorrow that she has a cousin, she'll like that
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Sorry I don't recognise those Appy names and the TB's aren't related so no worries there. One thing that might help you is that Impressive was born in 1969 so you only have to go back that far.

The two big names you would be seeing are Impressive or Conclusive as these were prolific breeders. If you don't see them then your horse will be unaffected by HYPP.

Have you used the allbreedpedigree site to see what more you can find?
 
Hi ya,

you are fine, there is no known Impressive lines in what you know of that breeding and you are very unlikely to have it in the side you are unaware of - based on what was around in this country at that time...

you can send off test to Avian biotech over here in cornwall who do horse colour testing - see link here and they are cheaper than sending to the States and are recognised for the tests.

http://www.avitronics.co.uk/

cheers, Jude.
 
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