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Breeding / Calving Issues
ABS CE Stars/Magic number for CE?
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<blockquote data-quote="Air gator" data-source="post: 1314417" data-attributes="member: 20755"><p>Ebenezer, There were two parts to my post. 1. The difference between CED epds and the calving ease star ratings ABS uses, and 2, a question of whether or not breeders had a "magic number" (whether it be CED or BW) for selecting bulls for heifers. I was not advocating for extreme low birth weight bulls, I was simply asking for feedback from experienced breeders. </p><p>If you look at some large breeders and they have flushmate sisters (or brothers) it seems that they keep the lower birthweight calf (unless the other calf is exceptional). Connealy Confidence has a +20 CED and a -3.3 for birthweight. If I had a cow or heifer with a large birthweight herself, why wouldn't I want to moderate the birthweight by using a bull like Confidence? Another thing to consider are the bulls who have a high CED epd as well as a high CEM epd. The bull with these I think of most frequently that fits this is Sav Bismarck. If breeders are "managing" cattle you are trying to get live calves and maintain the ability of heifers to calve without assistance. I like the idea of a a curve bender. A bull with a +10 CED and a YW epd of 100+. Not easy to find but why wouldn't you like a bull like that? (unless they are phenotypically a train wreck). I believe one of the reasons why you have so many breeds with black "purebred" animals (Limousin, Simmental, Gelbvieh, etc.) is because breeders were able to moderate Fullblood birthweights that had been unacceptable to bull buyers.</p></blockquote><p></p>
[QUOTE="Air gator, post: 1314417, member: 20755"] Ebenezer, There were two parts to my post. 1. The difference between CED epds and the calving ease star ratings ABS uses, and 2, a question of whether or not breeders had a “magic number” (whether it be CED or BW) for selecting bulls for heifers. I was not advocating for extreme low birth weight bulls, I was simply asking for feedback from experienced breeders. If you look at some large breeders and they have flushmate sisters (or brothers) it seems that they keep the lower birthweight calf (unless the other calf is exceptional). Connealy Confidence has a +20 CED and a -3.3 for birthweight. If I had a cow or heifer with a large birthweight herself, why wouldn’t I want to moderate the birthweight by using a bull like Confidence? Another thing to consider are the bulls who have a high CED epd as well as a high CEM epd. The bull with these I think of most frequently that fits this is Sav Bismarck. If breeders are “managing” cattle you are trying to get live calves and maintain the ability of heifers to calve without assistance. I like the idea of a a curve bender. A bull with a +10 CED and a YW epd of 100+. Not easy to find but why wouldn’t you like a bull like that? (unless they are phenotypically a train wreck). I believe one of the reasons why you have so many breeds with black “purebred” animals (Limousin, Simmental, Gelbvieh, etc.) is because breeders were able to moderate Fullblood birthweights that had been unacceptable to bull buyers. [/QUOTE]
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