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<blockquote data-quote="Lucky_P" data-source="post: 746862" data-attributes="member: 12607"><p>There IS a baseline, and it's different for each breed. The breed associations each chose a particular YEAR ( might be 1983 for some breed, 1976 for another, etc.) and epds are computed in comparison to breed average for specific traits for that base year.</p><p>For instance, current breed average BW epd for Angus is something like +2.2, not 0;</p><p></p><p>As others have indicated, they're EXPECTED progeny differences, and they're based on actual (and to some degree, theoretical) matings across a population of animals in that breed. Looking at a single animal, things may not always shake out as you'd expect - you've got to consider that the cow also brings something to the table. </p><p>I've had 50 lb calves and 105 lb calves out of the same bull in the same calving season.</p></blockquote><p></p>
[QUOTE="Lucky_P, post: 746862, member: 12607"] There IS a baseline, and it's different for each breed. The breed associations each chose a particular YEAR ( might be 1983 for some breed, 1976 for another, etc.) and epds are computed in comparison to breed average for specific traits for that base year. For instance, current breed average BW epd for Angus is something like +2.2, not 0; As others have indicated, they're EXPECTED progeny differences, and they're based on actual (and to some degree, theoretical) matings across a population of animals in that breed. Looking at a single animal, things may not always shake out as you'd expect - you've got to consider that the cow also brings something to the table. I've had 50 lb calves and 105 lb calves out of the same bull in the same calving season. [/QUOTE]
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