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Post by Snowfrost on Aug 13, 2011 4:38:37 GMT -5
Now, brown also occurs whenever an extension and agouti are present -- however, it does not appear as a bay horse does. The black is not restricted to the legs, and makes the body appear dark (but not black). Sometimes there is sealing along the muzzle, flanks, and chest (which are somewhat used as indicators for a Seal Brown horse). Brown horses cannot be affected by the + A alleles like a bay would. These are secondary, and seldom even occur. Some people may think that Seal Brown horses only occur with the Pangare gene present because of the sealing around its body. However, it has been realized that it is just the t gene acting (remember, t is the allele for a standard color, and browns are basically the same thing as bay horses -- which is why the color calculators won't take them as brown, but as bay). Brown horses always have black legs. This is because there is a poor restriction in the agouti, but brown horses have black bases. Seal brown is simply Ee/Ata. When you add a secondary allele, or a primary a, it changes the color of brown (or bay, depending on the combination). Seal brown also undergoes seasonal color changes. They are lighter in the summer, and nearly black in the winter (with orange sealing points). Now, you might notice that if you google search brown horses, most will look like bays -- I tried finding those that didn't look bay so that you wouldn't be confused. Since bay and brown horses are basically the same thing (besides the agouti alleles/'shade modifiers'), they tend to look the same. Just remember that brown horses always have darker feet and legs than their bodies, even if it's to the point where it's difficult to tell (that's alright, that's how it's supposed to be). If a horse (and wild-types make this even more difficult to be certain) has lighter feet, then it is not a brown or bay horse. It is likely a dark chestnut, or liver chestnut.
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