HGG Community Forums

IMO ; mares and stallions Breedability varies with each breeding ; just becuase you and your siblings have the same parents doesnt mean you will All excel in the same things ; my one brother is an accountant , i went into the Veterinary field ( sciences ) and my baby brother is a beach volleyball coach for UH ; on the beach living the good life ( LOL ). He probably makes more money than I do , but it would bore me to tears so there is that. Foals are the same, you can breed a mare back to the same stallion and get something completely different each time.

Each paper level covers a certain range of breeding ability. Each horse's personal breeding ability is a hidden number percentage. For example, a horse with perfect breeding ability(i.e. a foundation create from certain herd helpers, such as most Rank specials) have a breeding ability of 100%. An Exceptionally Perfect herd helper gives your horse a breeding ability of 105%. So, C/Yellow covers up to 100% breeding ability, B/Red is something like 100.5%-110%, and so on. I'll have to see if I can find the original post that explains this better. If I find it, I'll link it below.
When you breed two horses together, you get a foal that lands somewhere in their combined range of ability. That combined range can land the foal anywhere from inferior to superior to both parents. Similar breeding ability in the parents increases your chance of breeding a superior foal. Someone made a super helpful info graphic about this, and I will link it as soon as I find it.

Here's a post by @ConfluenceStable that gives some helpful information about breeding ability: https://www.huntandjump.com/forum/discussion/43811/pt-scores-showing-vs-breeding-a-bit-old-but-good-info
This one has the super helful info graphics: https://www.huntandjump.com/forum/discussion/44710/mind-the-gap-______-another-picture-guide-

the specific question was about foundation horses. I know for example that if i get an exceptionally perfect mare, she's going to be Red Papered and her PT will be the same 10.4, right, as the other exceptionally perfect mares I have.

So from that, they do look equally endowed, and that's what @lecobb8888 was asking about. But are you saying that within these parameters, there will still be some differences in breedability or show ability, even though they are all, in this case, Red and 10.4?

ok I've been looking at Exceptional Producers, and while they appear to all be red, their PT scores are all over the map, from zero to 10s.

@Fiddler PT stands for Performance Test. All it means is how old the horse will be before it “levels off” or stops learning during weekly training. That score is not connected to how good the foals from the horse will be. For an indication of that look at the Breeding Inspection or paper level. But every horse regardless of paper level has a range of quality they can pass on. And just like color, the quality of a foal is a combined inheritance from both parents.