Impressive Descendant HYPP=N/N Good or Bad?

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Impressive Descendant HYPP=N/N Good or Bad?

This is a discussion on Impressive Descendant HYPP=N/N Good or Bad? within the Horse Health forums, part of the Keeping and Caring for Horses category
  • What does hypp n/n mean horses
  • Impressive mean?

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    09-14-2010, 03:47 PM
Question Impressive Descendant HYPP=N/N Good or Bad?

I'm a new horse owner and just bought my first horse, a 5yo AQH gelding, so I did a little research on his bloodline (I know nothing about bloodlines, and little about horses), and found that he is a descendant of the horse Impressive, who I guess started on the HYPP mutation. My horse is N/N. So, does him being a a descendant of Impressive make him less/more desireable, or does is even matter at all?
Here is his pedigree Coolnrulen Quarter Horse
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    09-14-2010, 03:49 PM
Being N/N rules him out for any chance of having HYPP and/or passing it on if he were a breeding stallion. Impressive is still a very well respected name in the halter horse world. As long as he is Impressive and N/N, you should have no problems selling him down the line.
    09-14-2010, 03:51 PM
N/N is the best he can be concerning any potential HYPP episodes. Meaning he *should* never have one.

As far as Impressive - it's an individual thing. My husbands "A" horse has Impressive on her dams side. We don't ride or compete the papers - just the horse.
    09-14-2010, 03:53 PM
Impressive bred horses....some love them and some wouldn't touch them even if n/n I have no problem with an n/n horse
    09-14-2010, 03:53 PM
Great thanks!
    09-14-2010, 04:17 PM
I don't mean to hi-jack, but just have a question, if a horse is N/N does that mean they for sure won't have any HYPP episodes or just that they shouldn't have any?
    09-14-2010, 04:59 PM
Super Moderator
Originally Posted by kmdstar    
I don't mean to hi-jack, but just have a question, if a horse is N/N does that mean they for sure won't have any HYPP episodes or just that they shouldn't have any?
Won't. It means they do not carry the mutated gene.

H/H This status means that a horse carries a double copy of the defective gene and will pass at least one copy of the gene and the disease to 100% of it's offspring.

N/HThis status means that the horse carries one normal gene and one HYPP gene and statistically an N/H horse will pass the gene and the disease to 50% of it's offspring when bred to a N/N or non-Impressive bred horse. N/H to N/H cross will statistically result in 25% N/N progeny, 50% N/H progeny, and 25% H/H progeny.

N/N This status means that the horse carries two normal genes. It does not have the disease, nor can it be passed on.
    09-14-2010, 05:18 PM
Thanks! I've started looking at appaloosas as a possible next horse and realized I have to keep checking for the HYPP status so I'm trying to learn more about it.
    09-14-2010, 05:25 PM
Super Moderator
I'm actually a huge Impressive fan. I like the look, the movement, even the attitude....

I think he's just one of those controversial dudes that people either love... or hate...
    09-15-2010, 12:05 AM
Green Broke
I have an N/N grandaughter of Impressive, 1998 Appaloosa mare. Her sire was N/H. I have not had any problems with her health and she is a great horse. I will definitely own another N/N Impressive bred horse in the future, and may breed this girl if I find the right stud and the market comes back up again.

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