Being an owner/breeder myself, I was very fond of Impressive. I owned 3 Impressive bred horses (all bred by me). My first was Shesa Bold Bar a 1993 Palomino by he's Triple Impress (Skip by Impress x Vanbargo) a grandson of Impressive. He was about 15.2 hands and roughly 1400 lbs. Not quite so massive as today's popular stallions and at the time I bred my mare we were just learning about HyPP being named officially and that it could be identified via testing. Naturally I had my mare tested (N/N).
My next Impressive bred horse, a nephew of my mare. Skip's Triple Dare a 1999 Palomino colt by DoUDare (Hes Triple Impress x Sizzle Raliegh Ann) I had the opportunity to use a friend's mare that I just loved - Miss Thirsty Jaguar (Mr Jaguar x Ima Thristy Angel) - I showed this colt at Halter even after a near fatal accident when he was impaled on T-Post and had the post go through his ribs, shred his lung and collapse it and lose a rib which after he spent 3 months recovering from, pulled through beautifully but the scar was obvious and so was the missing rib - I watched judges gather and debate looking at my colt but in the end he won. Later as a riding horse he was AWESOME, he was so smooth and so easy to train and work with he blew my mind - My mare was my personal favorite, last foal out of my first horse and a treasure. Later I had my colt tested (N/H) and decided at 2 to castrate him. I know many would have kept him a stud and said I was stupid for gelding such a nice colt, but hey - he ended up being an awesome kids horse. I've often said, responsible breeders will self police the industry without AQHA having to do much and for the most part the spread has been less prominent but I think after reading AQHA's stance on HyPP and future registrations that they are on the right track.
Read all the comments here, Although the vid link to Kids Classic Style is no longer working I have seen him myself in person like 8 years ago and can say he is truly one massive horse - not particularly my slice of pie, I don't like them quite that heavy - I love a more refined performance typed halter horse than just pure looks. (my opinion of course) but, Kids Classic Style does look like he does in pictures and of the vids of him out there on YouTube.
One question I found didn't quite get answered, which is the reason I am posting on this thread was, why only Impressive?
Well, Impressive is not the only individual or species to have HyPP. It has been found in Humans as well, been well documented and I have heard through other sources that there may be a specific line of beef cattle suspected to have this mutation too (though can't say the beef rumor is true) But I do know it's not just Horses. As for heredity of HyPP:
Disease in humans
- H/H, meaning they have the mutation and it is homozygous. These horses always pass on the disease.
- N/H, meaning they have the mutation and it is heterozygous. These horses are affected to a lesser degree and pass on the disease 50% of the time.
- N/N, meaning they do not have the mutation and cannot pass it on.
Although much less publicized, hyperkalemic periodic paralysis has been observed in humans. In humans the disorder causes episodes of extreme muscle weakness, with attacks often beginning in infancy. Depending on the type and severity of the HyperKPP, it can increase or stabilize until the fourth or fifth decade where attacks may cease, decline, or, depending on the type, continue on into old age. Factors that can trigger attacks include rest after exercise, potassium-rich foods, stress, fatigue, weather changes, certain pollutants (e.g., cigarette smoke) and fasting. Muscle strength often improves between attacks, although many affected people may have increasing bouts of muscle weakness as the disorder progresses (abortive attacks). Sometimes with HyperKPP those affected may experience degrees of muscle stiffness and spasms (myotonia) in the affected muscles. This can be caused by the same things that trigger the paralysis, dependent on the type of myotonia. (See also paramyotonia).
Some people with hyperkalemic periodic paralysis have increased levels of potassium in their blood (hyperkalemia
) during attacks. In other cases, attacks are associated with normal blood potassium levels (normakalemia
). Ingesting potassium can trigger attacks in affected individuals, even if blood potassium levels do not rise in response.
The above Information I found for quick reference is not my own just posting info that is readily available on the net.