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Breeding horses for Color...

20 16:54:33

Question

Magic
Hello, I was wondering what color of foal I would have if I breed mare(Magic; Arabian) had predominantly bay, and dark bay parents, grandparents, and most of the horses in her lines that I can find. to the stallion (Financiero; Andalusian) Who's father and mother were Grey, and most of his siblings, are Grey(Can't find grandparents colors)? Also, I am worried about how "bulky" he is compared to her. How long does it usually last? I think I am afraid to ask. I know breeding is a "natural" process, but does it change horses afterward? Thanks

Answer
Hi Emily,

Your color question: Since the stallion you're considering has two grey parents, it is a good possibility that he is homozygous for the greying gene, meaning that all of his foals will grey out with age, no matter what base color they are born. If he is heterozygous for the greying gene, you still have a 50% possibility of having a foal that will grey out.  You would need to know what color the stallion was at birth in order to determine what the base color of your foal would be.

I have to be honest and tell you that I'm not sure what you mean when you say that you're concerned about the stallion being more "bulky" than the mare, or what you're asking in reference to "how long does it usually last?"  If you're referring to the breeding process, it usually does not take very long, but it varies from stud to stud.  The average time is just a minute or two from the time he actually penetrates until the time he ejaculates.

As for breeding changing horses, the actual breeding process generally does not change a mare, but when a mare is pregnant, some behaviors can change.  I have seen some mares who are normally high strung actually calm down some.  And then other mares can exhibit stud-like behaviors while pregnant.  Other mares do not change at all.  Again, that is something that can vary from mare to mare.

Breeding horses can be quite stressful.  A lot can go wrong during the actual breeding process, during the pregnancy and definitely during foaling.  The best thing you can do is do a lot of research and preparing prior to breeding, just to make yourself more aware of both the good and the bad aspects of breeding.

Best of luck.