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Can You Get Good Heterosis from a Crossbred Bull?
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<blockquote data-quote="WalnutCrest" data-source="post: 1490964" data-attributes="member: 21715"><p>100% x. 0% = 50%</p><p>100% x. 50% = 75%</p><p>100% x. 75% = 87.5%</p><p>100% x. 87.5% = 93.75% = foundational purebred</p><p></p><p>93.75% (foundational PB) x. 0% = 46.875% (not 50%) ... a difference of 3.125%</p><p>93.75% x. 46.875% = 70.3125% (not 75%) ... a difference of 4.6875%</p><p>93.75% x. 70.3125% = 82.03125% (not 87.5%) ... a difference of 5.46875% ... this is now considered a PB ...</p><p></p><p>...note how each generation is actually getting further and further away from the assumed percentages?</p><p></p><p>So, now we have:</p><p></p><p>82.03125% x. 0% = 41.015625% (not 50%) ... a difference of 8.984375%</p><p>82.03125% x. 41.015625% = 61.6640625% (not 75%) ... a difference of 13.3359875% </p><p>82.03125% x. 61.6640625% = 71.8476525% (not 87.5%) ... a difference of 15.65.234375% ... this is now considered a PB ...</p><p></p><p>71.8476525% x. 0% = 35.923828125% (not 50%) ... a difference of 14.076171875%</p><p>71.8476525% x. 35.923828125% = 53.8857% (not 75%) ... a difference of 21.1143%</p><p>71.8476525% x. 53.8857% = 62.8667% (not 87.5%) ... a difference of 24.6333% ... this is now considered a PB ...</p><p></p><p>And, if the ASA has been doing this since 1968 ...</p><p></p><p>So far, all I've done is track the first farm who imported genetics and up-graded their first animals ... then convinced their neighbor to do the same ... then that family convinced a third ... and the third convinced a fourth. The fourth family has PB animals that are approx. 5/8ths Simmental.</p><p></p><p>The impact, to me, of this sort of analysis is one big reason I've decided to run fullbloods of the two breeds I raise. FWIW.</p></blockquote><p></p>
[QUOTE="WalnutCrest, post: 1490964, member: 21715"] 100% x. 0% = 50% 100% x. 50% = 75% 100% x. 75% = 87.5% 100% x. 87.5% = 93.75% = foundational purebred 93.75% (foundational PB) x. 0% = 46.875% (not 50%) ... a difference of 3.125% 93.75% x. 46.875% = 70.3125% (not 75%) ... a difference of 4.6875% 93.75% x. 70.3125% = 82.03125% (not 87.5%) ... a difference of 5.46875% ... this is now considered a PB ... ...note how each generation is actually getting further and further away from the assumed percentages? So, now we have: 82.03125% x. 0% = 41.015625% (not 50%) ... a difference of 8.984375% 82.03125% x. 41.015625% = 61.6640625% (not 75%) ... a difference of 13.3359875% 82.03125% x. 61.6640625% = 71.8476525% (not 87.5%) ... a difference of 15.65.234375% ... this is now considered a PB ... 71.8476525% x. 0% = 35.923828125% (not 50%) ... a difference of 14.076171875% 71.8476525% x. 35.923828125% = 53.8857% (not 75%) ... a difference of 21.1143% 71.8476525% x. 53.8857% = 62.8667% (not 87.5%) ... a difference of 24.6333% ... this is now considered a PB ... And, if the ASA has been doing this since 1968 ... So far, all I've done is track the first farm who imported genetics and up-graded their first animals ... then convinced their neighbor to do the same ... then that family convinced a third ... and the third convinced a fourth. The fourth family has PB animals that are approx. 5/8ths Simmental. The impact, to me, of this sort of analysis is one big reason I've decided to run fullbloods of the two breeds I raise. FWIW. [/QUOTE]
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