Third, and this isn't of top importance, because of light pigmentation the Hereford has always been subject to eye cancer and udder burn.
Upper pitchers are typically of a lighter pigmentation, being predominantly yellowish-green, occasionally with traces of red or purple speckles on the inner surface.
One characteristic of neurofibromatosis is the presence of light brown pigmentation on the skin called café au lait spots.
The condition is also common in other canine breeds that share a genetic propensity for light pigmentation.
Of the roan varieties, lemon roan with a light brown pigmentation is the most recessive of all the roans.
The color of the upper portions of the body is grey, with only light pigmentation on the lower part of the body.
The subsequent spread of light skin was thought to be caused by assortive mating and sexual selection contributed to an even lighter pigmentation in females.
Areas that are further away from the equator and are generally closer to the poles have lower concentration of UV radiation, thus they reflect lighter pigmentation.
As seafood is high in vitamin D, vitamin D deficiency would not create a selective pressure for lighter pigmentation in that population.
Aerial pitchers have a lighter pigmentation than their lower counterparts, being light green on the outer surface.