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Artificial Insemination (AI) for Cattle
bull and bull EPD comparison
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<blockquote data-quote="Son of Butch" data-source="post: 1400334" data-attributes="member: 14585"><p>Quality of the semen at freezing and mobility quality of the semen when thawed is the top factor in relation to </p><p>determining a bull's A.I. conception rate. Select Sires designates bulls as "Superior Settlers" based on their labs tests. </p><p>They claim over 2% higher conception rates from their sires designated Superior Settlers.</p><p></p><p>It may seem counter intuitive, but in manufacturing pulling random samples for quality assurance testing is actually</p><p>more accurate than testing each item. So I have no problem using the aggregate non-return data from A.I. technicians employed by an A.I. company. What concerns me is the companies possible unwillingness to release the data when </p><p>it's negative regarding a hot selling bull. It has happened before with a hot holstein sire.</p><p></p><p>There is no data on bull's SC score relating to A.I. conception rate.</p><p>More sperm cells per straw than what the average straw contains may or may not affect conception rate.</p><p>General school of thought is 'the more the better' as insurance for possible below average mobility thaw rates.</p><p>Air gator...</p><p>As the tie breaker in your scenario I would choose the sire with the higher sperm cell count per straw.</p></blockquote><p></p>
[QUOTE="Son of Butch, post: 1400334, member: 14585"] Quality of the semen at freezing and mobility quality of the semen when thawed is the top factor in relation to determining a bull's A.I. conception rate. Select Sires designates bulls as "Superior Settlers" based on their labs tests. They claim over 2% higher conception rates from their sires designated Superior Settlers. It may seem counter intuitive, but in manufacturing pulling random samples for quality assurance testing is actually more accurate than testing each item. So I have no problem using the aggregate non-return data from A.I. technicians employed by an A.I. company. What concerns me is the companies possible unwillingness to release the data when it's negative regarding a hot selling bull. It has happened before with a hot holstein sire. There is no data on bull's SC score relating to A.I. conception rate. More sperm cells per straw than what the average straw contains may or may not affect conception rate. General school of thought is 'the more the better' as insurance for possible below average mobility thaw rates. Air gator... As the tie breaker in your scenario I would choose the sire with the higher sperm cell count per straw. [/QUOTE]
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