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Black Angus - epd MARB to IMF% conversion???
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<blockquote data-quote="Nkline" data-source="post: 1685948" data-attributes="member: 41001"><p>So it looks like the correlation the AAA lists for ultrasound imf% and marbling is 0.71 which is high. A correlation of 1.0 is perfect this would mean as imf goes up marbling score perfectly matches the up trajectory, at 0.71 as imf goes up marbling score very likely goes up but not necessarily matching imf based on different animals so pedigree info is brought in to massage the numbers. If a family usually has a better marbling score than their ultrasound imf indicates they will be biased up for marb epd.</p><p></p><p>Why does the AAA use marbling epd instead of imf, because marbling score is what is measured on the kill floor, and they can use it directly in the $ index values (generating hype).</p></blockquote><p></p>
[QUOTE="Nkline, post: 1685948, member: 41001"] So it looks like the correlation the AAA lists for ultrasound imf% and marbling is 0.71 which is high. A correlation of 1.0 is perfect this would mean as imf goes up marbling score perfectly matches the up trajectory, at 0.71 as imf goes up marbling score very likely goes up but not necessarily matching imf based on different animals so pedigree info is brought in to massage the numbers. If a family usually has a better marbling score than their ultrasound imf indicates they will be biased up for marb epd. Why does the AAA use marbling epd instead of imf, because marbling score is what is measured on the kill floor, and they can use it directly in the $ index values (generating hype). [/QUOTE]
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Black Angus - epd MARB to IMF% conversion???
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