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<blockquote data-quote="UG" data-source="post: 1107645" data-attributes="member: 714"><p>Sorry, I wasn't clear enough in my previous post. Yes Fleckvieh EPDs are calculated with purebred Simmental, SimAngus, etc. What makes EPDs work is when you have highly used AI bulls with calves in many herds. The performance of the progeny of the AI bull(s) can be compared to other sires (i.e. calving ease, weaning weight, marbling, etc.) and from that EPDs are generated. For example if a highly used AI sire's calves on average weigh 1 pound more at birth than the average of their contemporaries, chances are the AI sires BW EPD is going to be above breed average, by around 1 pound, assuming the contemporaries on average have BW EPDs of around breed average (I am being very simplistic here; the calculations of EPDs are much more involved than my basic example).</p><p></p><p>The majority of registered Simmentals and SimAngus are related somewhat closely to at least some highly used/high accuracy AI sires, which allows for the ASA to more accurately determine these animals EPDs. However, it is very difficult to find a Fleckvieh bull that has been used extensively in the country in herds other than other Fleck herds. To really get Fleck EPDs more in line (more accurate) to Simmental, some of the more highly influential Fleck bulls need to be used by other Simmental breeders, and the data (i.e. BW, WW, ultrasound scan data, etc.) needs to then be turned into ASA so that they can then determine how does a particular Fleck bull's progeny compare to the progeny of highly accurate Simmental bulls.</p></blockquote><p></p>
[QUOTE="UG, post: 1107645, member: 714"] Sorry, I wasn't clear enough in my previous post. Yes Fleckvieh EPDs are calculated with purebred Simmental, SimAngus, etc. What makes EPDs work is when you have highly used AI bulls with calves in many herds. The performance of the progeny of the AI bull(s) can be compared to other sires (i.e. calving ease, weaning weight, marbling, etc.) and from that EPDs are generated. For example if a highly used AI sire's calves on average weigh 1 pound more at birth than the average of their contemporaries, chances are the AI sires BW EPD is going to be above breed average, by around 1 pound, assuming the contemporaries on average have BW EPDs of around breed average (I am being very simplistic here; the calculations of EPDs are much more involved than my basic example). The majority of registered Simmentals and SimAngus are related somewhat closely to at least some highly used/high accuracy AI sires, which allows for the ASA to more accurately determine these animals EPDs. However, it is very difficult to find a Fleckvieh bull that has been used extensively in the country in herds other than other Fleck herds. To really get Fleck EPDs more in line (more accurate) to Simmental, some of the more highly influential Fleck bulls need to be used by other Simmental breeders, and the data (i.e. BW, WW, ultrasound scan data, etc.) needs to then be turned into ASA so that they can then determine how does a particular Fleck bull's progeny compare to the progeny of highly accurate Simmental bulls. [/QUOTE]
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