epds

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Basic epd's are calculated by taking 1/2 of each of the parents and adding them together. <p>Other factors like individual performance and sibling performance will then affect that basic epd.<p>For example a cow with a birth weight epd of +4 mated to a bull with a birth weight epd of +6 would give the calf a basic epd of (+2 and +3) +5. If the calf was above the breed average or below by several pounds that basic epd would be adjusted, and the accuracy raised.<p>Jason Trowbridge<br>Southern Angus Farms<br>Alberta Canada
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what if the sire and had come out of a multi<br>breeding system? I receive epd from our breed<br>assoc. Same ? what % does birth weight,205 da.<br>weight, and other item play in developing epds.: Basic epd's are calculated by taking 1/2 of each of the parents and adding them together. <p>: Other factors like individual performance and sibling performance will then affect that basic epd.<p>: For example a cow with a birth weight epd of +4 mated to a bull with a birth weight epd of +6 would give the calf a basic epd of (+2 and +3) +5. If the calf was above the breed average or below by several pounds that basic epd would be adjusted, and the accuracy raised.<p>: Jason Trowbridge<br>: Southern Angus Farms<br>: Alberta Canada<p>
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what if the dam and sire came from a multi<br>breeding operation and have no epds. Same ?<br>What % does birth weight, 205da. and other item<br>play in calculating epds.: epd's are calculated by taking 1/2 of each of theBasic parents and adding them together. <p>: Other factors like individual performance and sibling performance will then affect that basic epd.<p>: For example a cow with a birth weight epd of +4 mated to a bull with a birth weight epd of +6 would give the calf a basic epd of (+2 and +3) +5. If the calf was above the breed average or below by several pounds that basic epd would be adjusted, and the accuracy raised.<p>: Jason Trowbridge<br>: Southern Angus Farms<br>: Alberta Canada<p>
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Anonymous

Richard, it's a complicated formula to generate EPDs. You probably should ask this question of your breed association. In the Angus breed, if the parents, grandparents, etc., didn't have EPDs, that means no performance data was reported to the Association. There likely won't be any information on them in the AHIR data base and generally the first EPDs are quite low. As you report calves, hopefully, they'll come come up. Good luck.<p> .: what if the sire and had come out of a multi<br>: breeding system? I receive epd from our breed<br>: assoc. Same ? what % does birth weight,205 da.<br>: weight, and other item play in developing epds.: Basic epd's are calculated by taking 1/2 of each of the parents and adding them together. <p>: : Other factors like individual performance and sibling performance will then affect that basic epd.<p>: : For example a cow with a birth weight epd of +4 mated to a bull with a birth weight epd of +6 would give the calf a basic epd of (+2 and +3) +5. If the calf was above the breed average or below by several pounds that basic epd would be adjusted, and the accuracy raised.<p>: : Jason Trowbridge<br>: : Southern Angus Farms<br>: : Alberta Canada<p>
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(User Above)":2gwvo4n5 said:
: What % does birth weight,205 da. 365da.and<br>: parent and grandparents or any other componant<br>: effect epds.<p>EPD's are calculated by taking 1/2 from the maternal grand sire and 1/2 from the sire. Birth weight is how many more or less pounds the offspring are expected to weigh than the breed average, 205d is expected weaning weight more or less than the breed average, and same for 365 day wight. It is important to remember that you can not compare different breeds EPD's unless you have acees to an accross breed EPD calulations.<br>mike
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