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I have an EPD question
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<blockquote data-quote="MikeC" data-source="post: 295980" data-attributes="member: 1604"><p>Maternal weaning weight EPD predicts the total difference in weight of a bull's daughters' calves at weaning. <strong>A portion of this difference in weight comes from the milking ability of the bull's daughters (milk EPD), and a portion comes from the genes for growth passed from the bull to his daughters and then on to their calves.</strong> Like milk EPDs, maternal weaning weight EPDs are expressed in the weaning weight of a bull's grandprogeny. By definition, maternal weaning weight is equal to the milk EPD + 1/2 the weaning weight EPD. For Bull A in the above example, maternal weaning weight EPD = 15 + (1/2 x 20) = 25. In this case, we would expect daughters of Bull A to wean calves that are a total of 10 pounds heavier at weaning (25 - 15 = 10) than daughters of Bull B. A portion of this weight advantage is due to the superior milking ability of Bull A's daughters, and a portion is due to superior growth genes for weaning weight passed on by Bull A.</p><p></p><p>Sometimes called "Combined EPD's".</p></blockquote><p></p>
[QUOTE="MikeC, post: 295980, member: 1604"] Maternal weaning weight EPD predicts the total difference in weight of a bull's daughters' calves at weaning. [b]A portion of this difference in weight comes from the milking ability of the bull's daughters (milk EPD), and a portion comes from the genes for growth passed from the bull to his daughters and then on to their calves.[/b] Like milk EPDs, maternal weaning weight EPDs are expressed in the weaning weight of a bull's grandprogeny. By definition, maternal weaning weight is equal to the milk EPD + 1/2 the weaning weight EPD. For Bull A in the above example, maternal weaning weight EPD = 15 + (1/2 x 20) = 25. In this case, we would expect daughters of Bull A to wean calves that are a total of 10 pounds heavier at weaning (25 - 15 = 10) than daughters of Bull B. A portion of this weight advantage is due to the superior milking ability of Bull A's daughters, and a portion is due to superior growth genes for weaning weight passed on by Bull A. Sometimes called "Combined EPD's". [/QUOTE]
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