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<blockquote data-quote="Aero" data-source="post: 267320" data-attributes="member: 2076"><p>first off, i apologize for making a joke at your expense; it wasnt very professional.</p><p></p><p>Alan:</p><p>the truth is that it really doesnt matter what you breed. a friend of mine has the most inbred (53.96% CIB) cow in the Angus breed and she does just fine. if there were problems hidden in her pedigree, they would have been found by the time they made her.</p><p></p><p>the scary part of any linebreeding is the first attempt. if you linebreed animals that were produced by outcrossing, there is no telling what you might find. But if you get lucky and produce a consistent group of linebred calves with no apparent flaws that you like, you have just made a big step in the right direction and might have a real star in the making. </p><p></p><p>i think what you are asking can be answered by some simple guidelines: <ul> <li data-xf-list-type="ul"> 1) linebreeding should be planned and centered around a certain animal or specific animal type.<br /> 2) the higher the CIB, the more chance there is of uncovering problems.<br /> 3) some people say the CIB limit is around 12.5% if you want to avoid phenotypic inbreeding depression.</li> </ul><p></p><p>the Angus Association has tool that will allow you to calculate the projected CIB for a mating or the estimated CIB for a specific animal but you have to be a member and can only calculate registered Angus animals.</p></blockquote><p></p>
[QUOTE="Aero, post: 267320, member: 2076"] first off, i apologize for making a joke at your expense; it wasnt very professional. Alan: the truth is that it really doesnt matter what you breed. a friend of mine has the most inbred (53.96% CIB) cow in the Angus breed and she does just fine. if there were problems hidden in her pedigree, they would have been found by the time they made her. the scary part of any linebreeding is the first attempt. if you linebreed animals that were produced by outcrossing, there is no telling what you might find. But if you get lucky and produce a consistent group of linebred calves with no apparent flaws that you like, you have just made a big step in the right direction and might have a real star in the making. i think what you are asking can be answered by some simple guidelines:[list] 1) linebreeding should be planned and centered around a certain animal or specific animal type. 2) the higher the CIB, the more chance there is of uncovering problems. 3) some people say the CIB limit is around 12.5% if you want to avoid phenotypic inbreeding depression. [/list] the Angus Association has tool that will allow you to calculate the projected CIB for a mating or the estimated CIB for a specific animal but you have to be a member and can only calculate registered Angus animals. [/QUOTE]
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