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proceedings of the 6th conference on artificial insemination
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<blockquote data-quote="ollie&#039;" data-source="post: 170705" data-attributes="member: 2432"><p>I wish this idea would have been the standard instead of the one we now use.</p><p></p><p></p><p>Date line Jan 15 1972:</p><p></p><p>National Sire Evaluation:</p><p>Dr. R. L. Willham </p><p>Iowa state</p><p></p><p>Program</p><p>The sire evaluation program proposed by BIF is a procedure that develops fair comparisons among a large number of sires based on the performance of their progeny. This is done by using a specified set of sires in each herd conducting a progeny test. The set of sires used in all the herds provides the common link that is used to fairly compare all sires tested</p><p></p><p>Suppose you progeny test two young bulls along with an equal number of progeny from the specified set of sires. Then the EPDs of your bulls from the specified set of sires can be obtained........Through the set of sires used in all progeny tests , all of the bulls so tested can be fairly ranked......The key to success is the selection of bulls to be progeny tested based on their own performance.......The EPD is the difference between the average of a large number of progeny from a sire and the average of a large number of progeny from the set of specified sires when all progeny are treated alike and are from comparable cows.</p><p></p><p>edit: here is one of the last paragraphs</p><p></p><p>Conforming to the test procedures, proper allocation of cows to sires being tested, and use of a set of reference sires will tie such a sound program to a national sire evaluation program.</p></blockquote><p></p>
[QUOTE="ollie', post: 170705, member: 2432"] I wish this idea would have been the standard instead of the one we now use. Date line Jan 15 1972: National Sire Evaluation: Dr. R. L. Willham Iowa state Program The sire evaluation program proposed by BIF is a procedure that develops fair comparisons among a large number of sires based on the performance of their progeny. This is done by using a specified set of sires in each herd conducting a progeny test. The set of sires used in all the herds provides the common link that is used to fairly compare all sires tested Suppose you progeny test two young bulls along with an equal number of progeny from the specified set of sires. Then the EPDs of your bulls from the specified set of sires can be obtained........Through the set of sires used in all progeny tests , all of the bulls so tested can be fairly ranked......The key to success is the selection of bulls to be progeny tested based on their own performance.......The EPD is the difference between the average of a large number of progeny from a sire and the average of a large number of progeny from the set of specified sires when all progeny are treated alike and are from comparable cows. edit: here is one of the last paragraphs Conforming to the test procedures, proper allocation of cows to sires being tested, and use of a set of reference sires will tie such a sound program to a national sire evaluation program. [/QUOTE]
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proceedings of the 6th conference on artificial insemination
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