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Real World Data VS EPDS
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<blockquote data-quote="alexfarms" data-source="post: 693807" data-attributes="member: 8677"><p>It seems to me that the epd's are taking bigger swings from analysis to analysis on some individuals than they used to. I suspect this is because of a greater emphasis on recent data in the analysis as opposed to more emphasis on parentage data...just my WAG. I also suspect this is allowing some individuals to manipulate the data more easily and "build" epds. As for the ultrasound data, my first tip off that something wasn't adding up was when I had so many people telling me that you couldn't select for rideye just by looking at the animal....in other words the ultrasound was showing more ribeye on animals that appeared to have less ribeye. The problem withthat theory is our universities had been training judgeing teams to do visual rating of ribeyes for years and slaughtering the animal to confirm the visual appraisals. The ultrasound work I had done in my own herd seem to identify larger ribeyes on animals that visually appeared to have larger ribeyes, so within herd the ultrasound seemed pretty accurate. Who knows what is going on in other herds, when people tell me you can't visually rate larger ribeye cattle, I know someone is off base somewhere. I haven't done any ultrasound work on my cattle in a few years now.</p></blockquote><p></p>
[QUOTE="alexfarms, post: 693807, member: 8677"] It seems to me that the epd's are taking bigger swings from analysis to analysis on some individuals than they used to. I suspect this is because of a greater emphasis on recent data in the analysis as opposed to more emphasis on parentage data...just my WAG. I also suspect this is allowing some individuals to manipulate the data more easily and "build" epds. As for the ultrasound data, my first tip off that something wasn't adding up was when I had so many people telling me that you couldn't select for rideye just by looking at the animal....in other words the ultrasound was showing more ribeye on animals that appeared to have less ribeye. The problem withthat theory is our universities had been training judgeing teams to do visual rating of ribeyes for years and slaughtering the animal to confirm the visual appraisals. The ultrasound work I had done in my own herd seem to identify larger ribeyes on animals that visually appeared to have larger ribeyes, so within herd the ultrasound seemed pretty accurate. Who knows what is going on in other herds, when people tell me you can't visually rate larger ribeye cattle, I know someone is off base somewhere. I haven't done any ultrasound work on my cattle in a few years now. [/QUOTE]
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