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<blockquote data-quote="LFF" data-source="post: 480530" data-attributes="member: 1147"><p>Yes, you are correct. Doing what you describe is better than nothing at all. Ratios can be misleading unless you know what they are being compared against. If the breeder only uses one bull for the entire crop then you can find the best performing ones, however if a breader uses multiple sires it becomes more complicated.</p><p></p><p>Suppose you have 3 bulls and the following senero:</p><p></p><p>Bull A , weans 10 calves at 500 pounds</p><p>Bull B , weans 10 calves at 550 pounds</p><p>Bull C , weans 10 calves at 600 pounds</p><p></p><p>Bull B's weaning ratio is the average at 100.</p><p></p><p>Now suppose bulls B and C are AI sires and used in another herd.</p><p>Bull A now will be a different animal.</p><p></p><p>Bull A , weans 10 calves at 625 pounds</p><p>Bull B , weans 10 calves at 550 pounds</p><p>Bull C , weans 10 calves at 600 pounds</p><p></p><p>Bull B weaning ratio average deceases to 93.</p><p></p><p>See what I am getting at. A buyer needs to know a much larger amount of information in order to buy the best bull for weaning preformance. From the above example a person probally would be correct in assuming that the enviroment factors were similar because bull B and C performed the same. However even making that assumption could be incorrect because of differences in the cow herd.</p></blockquote><p></p>
[QUOTE="LFF, post: 480530, member: 1147"] Yes, you are correct. Doing what you describe is better than nothing at all. Ratios can be misleading unless you know what they are being compared against. If the breeder only uses one bull for the entire crop then you can find the best performing ones, however if a breader uses multiple sires it becomes more complicated. Suppose you have 3 bulls and the following senero: Bull A , weans 10 calves at 500 pounds Bull B , weans 10 calves at 550 pounds Bull C , weans 10 calves at 600 pounds Bull B's weaning ratio is the average at 100. Now suppose bulls B and C are AI sires and used in another herd. Bull A now will be a different animal. Bull A , weans 10 calves at 625 pounds Bull B , weans 10 calves at 550 pounds Bull C , weans 10 calves at 600 pounds Bull B weaning ratio average deceases to 93. See what I am getting at. A buyer needs to know a much larger amount of information in order to buy the best bull for weaning preformance. From the above example a person probally would be correct in assuming that the enviroment factors were similar because bull B and C performed the same. However even making that assumption could be incorrect because of differences in the cow herd. [/QUOTE]
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