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Need some Homo Polled assistance
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<blockquote data-quote="Lucky_P" data-source="post: 1253540" data-attributes="member: 12607"><p>Yep. Depends on what's behind the cow, and behind the dam of the Ranch Hand son(I'm presuming he's polled?). If either of those 'girls' are 'hiding' the horn gene, you've got a 0 to 25 to 50% chance at a horned calf. </p><p>Scurs 3 generations back behind Dream On, 1 generation back behind Ranch Hand...so they could be in the mix.</p><p></p><p>Horn gene and scur gene are separate traits. <a href="http://homepage.usask.ca/~schmutz/polled.html" target="_blank">http://homepage.usask.ca/~schmutz/polled.html</a></p><p>If you have a calf with scurs, they are hetero polled(horn gene carrier) but if homo polled, the scur gene may be sliding along unexpressed, and can show up in later generations, when a calf inherits the horn gene from a parent. A male only requires one copy of the scur gene to have scurs, females must have two copies...but if they have scurs, they are hetero polled.</p><p></p><p>I have a daughter of GAR Yield Grade(Angus), out of a smooth-polled AngusXSimAngus dam... who has scurs. So...she inherited one copy of the scur gene from her dam, and one copy from Yield Grade(yes, some Angus cattle carry the scur gene). Has not produced a horned or scurred calf, but has only been bred to smooth polled bulls(some have been hetero polled) - but as andyva says... since a cow only has just so many calves in her lifetime, she might be a carrier and never produce a calf with either of those traits...</p></blockquote><p></p>
[QUOTE="Lucky_P, post: 1253540, member: 12607"] Yep. Depends on what's behind the cow, and behind the dam of the Ranch Hand son(I'm presuming he's polled?). If either of those 'girls' are 'hiding' the horn gene, you've got a 0 to 25 to 50% chance at a horned calf. Scurs 3 generations back behind Dream On, 1 generation back behind Ranch Hand...so they could be in the mix. Horn gene and scur gene are separate traits. [url=http://homepage.usask.ca/~schmutz/polled.html]http://homepage.usask.ca/~schmutz/polled.html[/url] If you have a calf with scurs, they are hetero polled(horn gene carrier) but if homo polled, the scur gene may be sliding along unexpressed, and can show up in later generations, when a calf inherits the horn gene from a parent. A male only requires one copy of the scur gene to have scurs, females must have two copies...but if they have scurs, they are hetero polled. I have a daughter of GAR Yield Grade(Angus), out of a smooth-polled AngusXSimAngus dam... who has scurs. So...she inherited one copy of the scur gene from her dam, and one copy from Yield Grade(yes, some Angus cattle carry the scur gene). Has not produced a horned or scurred calf, but has only been bred to smooth polled bulls(some have been hetero polled) - but as andyva says... since a cow only has just so many calves in her lifetime, she might be a carrier and never produce a calf with either of those traits... [/QUOTE]
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