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Cattle Boards
Artificial Insemination (AI) for Cattle
In-breeding Risk same grandfather & great great grandfather
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<blockquote data-quote="Farminlund" data-source="post: 1610655" data-attributes="member: 1132"><p>I haven't been on this board for sometime but when there's something I need to understand - this is the place you can usually get an answer! Thanks in advance for any inputs.</p><p></p><p>I have always bred using the rule of thumb of 3 generations back on both sides of the pedigree for the same sire/dam, however, I mistakenly bred a cow who's sire is Mytty in Focus to 44 Main St 7049 who has Mytty 3 generations back (ie great grandfather). So the resultant calf would have the same grandfather (on the dam side) & great great grandfather (on the sire side). I know there are means to determine the risk level involved with such breeding's but I'm not sure how to figure it out. Should I abort the calf if the ma is settled or let her have the calf or can anyone tell me how to determine the risk %?</p><p></p><p>I once had a calf (when using a bull) that had the same grandfather on both sides (father of dam & sire) & I had to but it down, as it was missing the A-hole - but that's pretty much a known high risk situation, I surely don't want that to happen again!</p></blockquote><p></p>
[QUOTE="Farminlund, post: 1610655, member: 1132"] I haven't been on this board for sometime but when there's something I need to understand - this is the place you can usually get an answer! Thanks in advance for any inputs. I have always bred using the rule of thumb of 3 generations back on both sides of the pedigree for the same sire/dam, however, I mistakenly bred a cow who's sire is Mytty in Focus to 44 Main St 7049 who has Mytty 3 generations back (ie great grandfather). So the resultant calf would have the same grandfather (on the dam side) & great great grandfather (on the sire side). I know there are means to determine the risk level involved with such breeding's but I'm not sure how to figure it out. Should I abort the calf if the ma is settled or let her have the calf or can anyone tell me how to determine the risk %? I once had a calf (when using a bull) that had the same grandfather on both sides (father of dam & sire) & I had to but it down, as it was missing the A-hole - but that's pretty much a known high risk situation, I surely don't want that to happen again! [/QUOTE]
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Artificial Insemination (AI) for Cattle
In-breeding Risk same grandfather & great great grandfather
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