agouti question
colorfan
January 10, 2010 February 22, 2011
Forums
Is this a true statement?
extension red factor:e/e (red based)
agouti A/A homozygous dominant ofr agouti so will never produce a foal that is any variant of black. only bay.
If this is true is it possible to have A/a so agouti is only passed 50/50?
Probably seems really kindergarten but don't know.
thank you
Re: agouti question
Gosh that sounds exactly like my description of Lace. :mrgreen:
Yes, it means that horse will NEVER have a black, smokey black, grullo/a, classic champagne, etc. No black bases without agouti whatsoever. In other words, ONLY bay bases... bay, buckskin, bay dun, amber champagne, etc.
By the same token, if the results were Aa instead, 50% of the foals (when bred to an EE aa) could be bay and 50% black.
aa would mean could only produce black foals (to an EE aa).
Re: agouti question
Okay, with agouti, it goes like this...EE aa or Ee aa will be black; Ee A/a, Ee A/A, EE A/A or EE A/a is bay. Agouti does not show on red or ee a/a, ee A/A or ee A/a will all appear the same - chestnut.
Yes you can have an A/a with agouti only passing 50% of the time...but both sire and dam need to be tested to assess the agouti standing of each as both can pass it to the foal. I have met a lot of people that believe that only blacks carry agouti and therefore can only pass it on to the foal ... and we know this is not true.