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Artificial Insemination (AI) for Cattle
Ai sire question
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<blockquote data-quote="Ebenezer" data-source="post: 1501688" data-attributes="member: 24565"><p>"risk = stillbirth % increases with inbreeding coefficient." (Quote function will not work today.)</p><p></p><p>Not really. Biggest risks are lower performance or females that are sterile. But that is part of the sort and save process. And some of the lower performance will disappear in the 2nd and third generations.</p><p></p><p>"To the linebreeding... it is intimidating. I don't think there is enough education for most (including myself), to feel comfortable with it. I do see it's benefits but what are the risks? Where are the boundaries? How does everyone's lack of education, hurt you as the seller when you sell?"</p><p></p><p>There are definite steps. Not all animals will linebreed well. My guess is that there will be 85% that will not work and 15% that will show little to no effects. That is the purifying first step. %IBC is not a big deal. Full sib to full sib, son to dam, sire to daughter or whatever. But making tight breeding in the herd or flock is not the goal. It is to close out unnecessary influences once you see decent animals that have also been sorted for useful trait for you and others who use or eat them. You are really seeking the purer and more potent individual(s) in a group.</p><p></p><p>Selling then becomes not a mainstream numbers game or "mine are sired by the same bulls or rams as everybody else's in the USA or world" but a true set of selling points of proper function, environmental fit and useful animals which are all a lot alike without one great one to set up as an achievement each year. But you're right, it is not for everybody.</p></blockquote><p></p>
[QUOTE="Ebenezer, post: 1501688, member: 24565"] "risk = stillbirth % increases with inbreeding coefficient." (Quote function will not work today.) Not really. Biggest risks are lower performance or females that are sterile. But that is part of the sort and save process. And some of the lower performance will disappear in the 2nd and third generations. "To the linebreeding... it is intimidating. I don’t think there is enough education for most (including myself), to feel comfortable with it. I do see it’s benefits but what are the risks? Where are the boundaries? How does everyone’s lack of education, hurt you as the seller when you sell?" There are definite steps. Not all animals will linebreed well. My guess is that there will be 85% that will not work and 15% that will show little to no effects. That is the purifying first step. %IBC is not a big deal. Full sib to full sib, son to dam, sire to daughter or whatever. But making tight breeding in the herd or flock is not the goal. It is to close out unnecessary influences once you see decent animals that have also been sorted for useful trait for you and others who use or eat them. You are really seeking the purer and more potent individual(s) in a group. Selling then becomes not a mainstream numbers game or "mine are sired by the same bulls or rams as everybody else's in the USA or world" but a true set of selling points of proper function, environmental fit and useful animals which are all a lot alike without one great one to set up as an achievement each year. But you're right, it is not for everybody. [/QUOTE]
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