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Cattle Boards
Breeding / Calving Issues
How many Test Crosses are needed
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<blockquote data-quote="mpassmore85" data-source="post: 1458702" data-attributes="member: 27759"><p>Dependant on exact trait you are trying to prove is homozygous? </p><p></p><p>You know his lineage at least 2 generations both parents ? </p><p></p><p>Color is always tricky lots of purebred and hybrid cows that are "refined" or a bit steer looking are homozygous also. </p><p></p><p>So in that you get luck of the draw normally when you breed homo to homo you get a 40/20 split as opposed to a 30/30</p></blockquote><p></p>
[QUOTE="mpassmore85, post: 1458702, member: 27759"] Dependant on exact trait you are trying to prove is homozygous? You know his lineage at least 2 generations both parents ? Color is always tricky lots of purebred and hybrid cows that are “refined” or a bit steer looking are homozygous also. So in that you get luck of the draw normally when you breed homo to homo you get a 40/20 split as opposed to a 30/30 [/QUOTE]
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How many Test Crosses are needed
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