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Thinking of "Unregistering" A Few--Advice?
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<blockquote data-quote="boondocks" data-source="post: 1400776" data-attributes="member: 20599"><p>Good discussion, for the most part. But I'm a bit taken aback at how quickly a few folks jumped to conclusions. To recap: I know EXACTLY which animals in our herd are carriers. The herd is ALL REGISTERED. Keep in mind that in the Angus book, they TELL you if you have a potential carrier you need to test.(If so, and you don't test, you can't register). So it's not a matter of "at least X number" are carriers--no; we know exactly who is, and who isn't. (And one or two of you are confusing affected animals and carrier animals).</p><p>Since purchasing our initial 2 cows, they (and their progeny) have been AI'd (to non-carriers from SS), so it's not a matter of continuing to breed to a carrier bull. (Hey, I may be fairly new at this but I'm not an idiot). (It goes back to a sire from the 1970's, several generations back in the mama's line). As someone points out, we have had bad luck; if my stats memory serves, we had a 1/64 chance of getting 3 carrier females in a row (1/4 x 1/4 x1/4: each mating had a one in four chance of producing a female carrier). Ken has identified what happened here exactly: we had just bought (and bred) her when the defect/test was first identified. She was one of two cows we started with, so it's not like we were in a mood to chuck her, especially given we had a 3 in 4 chance of getting either a "steer" or a non-carrier female.(Keep in mind she is a carrier, not an affected cow; if bred to a noncarrier, she will NEVER have an affected calf). Each time we have bred her, we have had the same 3 in 4 chance of getting either a "steer" or a non-carrier female. So yeah, just really bad luck. I have enough genetics background to know that if we start culling for every defect as they get discovered, we will soon be out of cows. There ain't a creature born that doesn't have genetic "defects" folks. It's just a matter of how much we've learned about any given genetic variant. </p><p>Obviously, I would fully disclose the status if I sold any of these; if I did, I would probably rather see them go to a commercial herd. We've gotten only one male from this family, and he was steered on the spot (as would be any others).</p><p>Anybody but SPH think I should just butcher them all? At a minimum, I'm thinking that's what we'll do with any new female carriers going forward.Wish ET had a better conception rate. Would have a few good recips.</p></blockquote><p></p>
[QUOTE="boondocks, post: 1400776, member: 20599"] Good discussion, for the most part. But I'm a bit taken aback at how quickly a few folks jumped to conclusions. To recap: I know EXACTLY which animals in our herd are carriers. The herd is ALL REGISTERED. Keep in mind that in the Angus book, they TELL you if you have a potential carrier you need to test.(If so, and you don't test, you can't register). So it's not a matter of "at least X number" are carriers--no; we know exactly who is, and who isn't. (And one or two of you are confusing affected animals and carrier animals). Since purchasing our initial 2 cows, they (and their progeny) have been AI'd (to non-carriers from SS), so it's not a matter of continuing to breed to a carrier bull. (Hey, I may be fairly new at this but I'm not an idiot). (It goes back to a sire from the 1970's, several generations back in the mama's line). As someone points out, we have had bad luck; if my stats memory serves, we had a 1/64 chance of getting 3 carrier females in a row (1/4 x 1/4 x1/4: each mating had a one in four chance of producing a female carrier). Ken has identified what happened here exactly: we had just bought (and bred) her when the defect/test was first identified. She was one of two cows we started with, so it's not like we were in a mood to chuck her, especially given we had a 3 in 4 chance of getting either a "steer" or a non-carrier female.(Keep in mind she is a carrier, not an affected cow; if bred to a noncarrier, she will NEVER have an affected calf). Each time we have bred her, we have had the same 3 in 4 chance of getting either a "steer" or a non-carrier female. So yeah, just really bad luck. I have enough genetics background to know that if we start culling for every defect as they get discovered, we will soon be out of cows. There ain't a creature born that doesn't have genetic "defects" folks. It's just a matter of how much we've learned about any given genetic variant. Obviously, I would fully disclose the status if I sold any of these; if I did, I would probably rather see them go to a commercial herd. We've gotten only one male from this family, and he was steered on the spot (as would be any others). Anybody but SPH think I should just butcher them all? At a minimum, I'm thinking that's what we'll do with any new female carriers going forward.Wish ET had a better conception rate. Would have a few good recips. [/QUOTE]
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