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<blockquote data-quote="Lucky_P" data-source="post: 913013" data-attributes="member: 12607"><p>Color inhibitor gene from Charolais, or color dilution gene from Simmental & Gelbvieh-type cattle do odd things. </p><p>Used to have a little yellow white-faced cow with finching - that would throw white calves when bred to a black Angus bull - looked like Charolais. </p><p>Have one of her daughters, also yellow/whiteface, by a red SimAngus bull, that has thrown three white calves and one black, bred to the current Angus sire.</p><p>Those white Angus-sired heifers are heterozygous black - (some 'whites' could even be homo black) but may have white hair, if the Charolais color inhibitor gene is present - so it wouldn't be out of the question for a white heifer bred to a red bull(like a Hereford) to drop a black calf if it inherited the black coat color gene from her but not the inhibitor gene.</p><p>I've seen some red Simmental-influenced cattle that you'd swear were not dilution gene carriers because they were SO red, but bred to a black bull or cow, they'll sometimes produce gray calves.</p><p></p><p>Good in-depth discussion of coat color inheritance in cattle here: <a href="http://www.braunviehcenter.com/cattle_genetics_part2.html" target="_blank">http://www.braunviehcenter.com/cattle_g ... part2.html</a></p></blockquote><p></p>
[QUOTE="Lucky_P, post: 913013, member: 12607"] Color inhibitor gene from Charolais, or color dilution gene from Simmental & Gelbvieh-type cattle do odd things. Used to have a little yellow white-faced cow with finching - that would throw white calves when bred to a black Angus bull - looked like Charolais. Have one of her daughters, also yellow/whiteface, by a red SimAngus bull, that has thrown three white calves and one black, bred to the current Angus sire. Those white Angus-sired heifers are heterozygous black - (some 'whites' could even be homo black) but may have white hair, if the Charolais color inhibitor gene is present - so it wouldn't be out of the question for a white heifer bred to a red bull(like a Hereford) to drop a black calf if it inherited the black coat color gene from her but not the inhibitor gene. I've seen some red Simmental-influenced cattle that you'd swear were not dilution gene carriers because they were SO red, but bred to a black bull or cow, they'll sometimes produce gray calves. Good in-depth discussion of coat color inheritance in cattle here: [url=http://www.braunviehcenter.com/cattle_genetics_part2.html]http://www.braunviehcenter.com/cattle_g ... part2.html[/url] [/QUOTE]
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