Frankly, that is why I am posting. I am trying to learn about the dun gene and as you can see I apparently have it in my line.
This last mare "Fortune Cookie" I originally sent in the AMHA registration as a bay (she looked black bay, which is common here as we have so many horses that are homozygous for black. They seem to produce VERY black bays). Then I had to call AMHA and ask that they change it to a buckskin, as she started lightening up after she was over a month old.
She tested Homozygous Black, Heterozygous Agouti and with one Cream gene.
This year when we clipped her out a couple of weeks ago we could see the back stripe, but it darkened a great deal in two weeks, which is when we took the photos this week. It was not until she was all cleaned up and we were walking her out to photograph that we saw all the vertical stripes and the person handling her kept saying she looked like the brindle photos I had shown her from the LB Forum. It was a sunny day, if it had been more overcast they would have shown better. You know how that goes! But they go down her sides significantly. Lots of narrow ones.
I am open for suggestions.
Her dam China has THE most iridescent color of hair I have ever seen and we had her tested for Champagne and Pearl because of it (both were negative). I am assuming she carries dun.
I bought Fortune Cookie's grand dam Rowdy Lass (shown above) in foal to Sids Terminator and I have no idea if he carried dun. Rowdy Lass has Cob webbing all over her back.
Any comments would be appreciated.