HGG Community Forums

It's probably the nd1 that has lightened the color of this horse, although it doesn't always express that way.

It is the mutation of the Dun gene that first appeared. It has a variety of expressions, including the slight darkening of the top line which is a bit broader over the withers which you are seeing here. It can range up to a very distinct dark patch over the withers.

The bright clear colors of nd2 became preferred after that second mutation of the gene first appeared and has become more common in most horse breeds.

If you do a search for chestnut horses with nd1, you may see a variety of its effects. It can, of course appear on and affect any color, although it will probably not show up much on blacks.

yes, :) non-dun 1 will lighten the horses coat and leave a dark patch on the shoulder and/or give the coat a dulled look (sometimes), it varies depending on the portrait but Hom nd1 or het nd1 will show up. "Nd1 horses have many of the characteristic markings of dun horses but are less diluted" is what is says on the Dun page under the genetics guide. It can show up randomly in creates too
Here's some examples from me herd (I LOVE nd1 so it's pretty common in my barns)


show8769146

r2G Simple Snow nd1

r2G Single Step sP nd1

Yes, nd1 is part of the dun gene so will give the look of a grullo since grullo is black with dun

Yes definitely! It dulls down the coats.
I personally love nd1 expressions but I know not everyone else does. Most of my GMT'd projects get nd1 put on at some point, therefore the majority of my breeding stock has it :))