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2way and 3waycross explained.
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<blockquote data-quote="VanC" data-source="post: 865121" data-attributes="member: 3355"><p>I can't get the entire article to come up on my computer but what I can see seems to be about rotational crossbreeding. Some of you seem to be talking about a straight 3-breed cross, which is not the same thing as a 3-breed rotation. </p><p></p><p>As an example, a straight 3-breed cross would be when you have Hereford x Angus cows and you breed them to a Char bull, then repeat that every breeding season. Main problem is finding a source for replacements if you don't have the room to make them yourself.</p><p></p><p>In a 3-breed rotation you breed Hereford cows to an Angus bull. Those daughters are then bred to a Char bull, those daughters are bred back to a Hereford bull, those daughters are bred back to an Angus bull, those daughters are bred back to a Char bull and so on. The cows are always bred back to the bull that she is least related to by breed and once this gets going the heterosis stabilizes at about 86%. The main problem with this is you either need to use AI or you need to have 3 breeding pastures with a different breed of bull in each one. If you run the cows together you need to keep good records so you know the breed makeup of the cow so you know which breed of bull to breed her to. The good news is there will always be an ample supply of replacements on your own place so you don't need to look elsewhere for those.</p><p></p><p>A 2-breed rotation is the same only with 2 breeds instead of three. Hereford cows to an Angus bull. Those daughters are bred back to a Hereford bull. Those daughters are bred back to an Angus bull and so on. The heterosis will stabilize at about 66%. Again, there will always be a good supply of replacements without having to look elsewhere.</p></blockquote><p></p>
[QUOTE="VanC, post: 865121, member: 3355"] I can't get the entire article to come up on my computer but what I can see seems to be about rotational crossbreeding. Some of you seem to be talking about a straight 3-breed cross, which is not the same thing as a 3-breed rotation. As an example, a straight 3-breed cross would be when you have Hereford x Angus cows and you breed them to a Char bull, then repeat that every breeding season. Main problem is finding a source for replacements if you don't have the room to make them yourself. In a 3-breed rotation you breed Hereford cows to an Angus bull. Those daughters are then bred to a Char bull, those daughters are bred back to a Hereford bull, those daughters are bred back to an Angus bull, those daughters are bred back to a Char bull and so on. The cows are always bred back to the bull that she is least related to by breed and once this gets going the heterosis stabilizes at about 86%. The main problem with this is you either need to use AI or you need to have 3 breeding pastures with a different breed of bull in each one. If you run the cows together you need to keep good records so you know the breed makeup of the cow so you know which breed of bull to breed her to. The good news is there will always be an ample supply of replacements on your own place so you don't need to look elsewhere for those. A 2-breed rotation is the same only with 2 breeds instead of three. Hereford cows to an Angus bull. Those daughters are bred back to a Hereford bull. Those daughters are bred back to an Angus bull and so on. The heterosis will stabilize at about 66%. Again, there will always be a good supply of replacements without having to look elsewhere. [/QUOTE]
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