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Bull pick of this years crop
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<blockquote data-quote="sim.-ang.king" data-source="post: 1506669" data-attributes="member: 14533"><p>If you have been using bulls, and heifers out of your herd for the past 20ish years, then really you don't have breed X-Y-Z. After so long of genetic makeup coming from one source, you actually begin to stabilize the composite makeup, and make a new genetic line. </p><p>If you had 10 angus cows, and bred them all to a Simmental bull. Then took the resulting F1 calves, and only used them for breeding, say 1 bull and 6 heifers from the cross, and used the F1 bull on the F1 heifers. You would have a Line 1 composite, and after years of breeding within that line, you would make a stabilize composite line. Which would be neither Angus nor Simmental, but a composite. </p><p>After making a composite though, you can do two things, either go on breeding within the Line 1, or bring in outside genetics.</p><p>Continual breeding within the line has some good, and some bad. </p><p>The good is you get consistent calves, and know what you will get year over year. Plus the bonus of being able to market composite breeding stock to commercial breeders. </p><p>The bad is you lose out on any possibility of increased performance that outside genetics might proved, by add new genetics to the mix. You also are at greater risk of genetic defects to start showing up, and affecting your entire line.</p><p></p><p>Bring in outside genetics has some perks, and some pit falls. </p><p>One perk would be increased performance from outside genetics. Just like the original cross between the angus cows, and Simmental bull resulted in superior calves, compared to the parents. So too would the calves be from a stabilized composite, and a purebred, or crossbred from another line. Plus the added benefit of less chance of genetic defects being replicated.</p><p>One of the downsides would be the loss of consistent calf crops, to some degree, but using a composite on a purebred, and making those calves terminal would negate most of that.</p><p></p><p>You could split your herd, and have your best cows working toward stabilizing the line, and the other half as terminal, and use a PB bull on them. </p><p>I am currently working on breeding up some of my best cows towards making PB simmentals, and I use them for replacements. But most of my cows get bred terminal, and the calves get sold. This really helps me get to the goals I want in making my own PB line, without losing out on performance I get from using different PB bulls on crossbred cows.</p></blockquote><p></p>
[QUOTE="sim.-ang.king, post: 1506669, member: 14533"] If you have been using bulls, and heifers out of your herd for the past 20ish years, then really you don't have breed X-Y-Z. After so long of genetic makeup coming from one source, you actually begin to stabilize the composite makeup, and make a new genetic line. If you had 10 angus cows, and bred them all to a Simmental bull. Then took the resulting F1 calves, and only used them for breeding, say 1 bull and 6 heifers from the cross, and used the F1 bull on the F1 heifers. You would have a Line 1 composite, and after years of breeding within that line, you would make a stabilize composite line. Which would be neither Angus nor Simmental, but a composite. After making a composite though, you can do two things, either go on breeding within the Line 1, or bring in outside genetics. Continual breeding within the line has some good, and some bad. The good is you get consistent calves, and know what you will get year over year. Plus the bonus of being able to market composite breeding stock to commercial breeders. The bad is you lose out on any possibility of increased performance that outside genetics might proved, by add new genetics to the mix. You also are at greater risk of genetic defects to start showing up, and affecting your entire line. Bring in outside genetics has some perks, and some pit falls. One perk would be increased performance from outside genetics. Just like the original cross between the angus cows, and Simmental bull resulted in superior calves, compared to the parents. So too would the calves be from a stabilized composite, and a purebred, or crossbred from another line. Plus the added benefit of less chance of genetic defects being replicated. One of the downsides would be the loss of consistent calf crops, to some degree, but using a composite on a purebred, and making those calves terminal would negate most of that. You could split your herd, and have your best cows working toward stabilizing the line, and the other half as terminal, and use a PB bull on them. I am currently working on breeding up some of my best cows towards making PB simmentals, and I use them for replacements. But most of my cows get bred terminal, and the calves get sold. This really helps me get to the goals I want in making my own PB line, without losing out on performance I get from using different PB bulls on crossbred cows. [/QUOTE]
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