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Breeding / Calving Issues
New bull time
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<blockquote data-quote="Ebenezer" data-source="post: 1830162" data-attributes="member: 24565"><p>"I agree heterosis and consistency don't seem to come together logically."</p><p></p><p>They do, however. A cross between 2 close bred and assumed purebred individuals improve consistency in the purebred sources if the breeder knows that a type that fits, without problems, is his job. Then the cross of the two distinctly different breeds deliver maximum heterosis to the buyers of the two offspring from the two sources. </p><p></p><p>The all black marketing deal has ruined that for many breeds. Heterosis for commercial folks is used up, partly, buy the "almost purebred" source breeders. The commercial buyers, in a sense, get cheated out of maximum heterosis in their cattle. </p><p></p><p>From some ongoing genetic work in sheep - 5 generations of an outcross hides the genetics of the outcross from modern DNA testing. But if you deal with the breeds that have recessive genes then you know that the random outcross of 20 or even 40 years ago will eventually pop back up. It will take some line breeding to reveal it. That means few will ever see it.</p></blockquote><p></p>
[QUOTE="Ebenezer, post: 1830162, member: 24565"] "I agree heterosis and consistency don't seem to come together logically." They do, however. A cross between 2 close bred and assumed purebred individuals improve consistency in the purebred sources if the breeder knows that a type that fits, without problems, is his job. Then the cross of the two distinctly different breeds deliver maximum heterosis to the buyers of the two offspring from the two sources. The all black marketing deal has ruined that for many breeds. Heterosis for commercial folks is used up, partly, buy the "almost purebred" source breeders. The commercial buyers, in a sense, get cheated out of maximum heterosis in their cattle. From some ongoing genetic work in sheep - 5 generations of an outcross hides the genetics of the outcross from modern DNA testing. But if you deal with the breeds that have recessive genes then you know that the random outcross of 20 or even 40 years ago will eventually pop back up. It will take some line breeding to reveal it. That means few will ever see it. [/QUOTE]
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