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Breeding / Calving Issues
EPD question
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<blockquote data-quote="Sage" data-source="post: 462282" data-attributes="member: 5352"><p>Lets try to say this in a very simple form so everybody can get a grasp on it.</p><p></p><p>EPD - Expected PROGENY Difference</p><p>EBV - Expected breeding value - 1/2 of EPD</p><p></p><p>If bull A has WW of +42 and Bull B has WW of +20 EPD then a calf born from bull A "should" wean 22lb heavier than a calf born from bull B, having been bred to the same cow in the same environment. The problem here is it is very very hard (almost impossible)to have two calves born from the same cow in the exact same environment sired by different bulls.</p><p></p><p>There is an average EPD for each breed, can be found at their web sites or in the major stud catalogs. EPD's are great for comparing animals within the same breed as long as you have a goal in mind for the progeny. There is work being done with across breed EPD's (Simmital Assoc. mostly) but I'm not up to speed on this at all.</p><p></p><p>Universities and breed associations with people much smarter than me figure the EPD's so I cannot give you any reliable info there. If your wanting to know what a breeding will produce for an epd you can take the average of the parents and this will give you a reasonable estimate.</p></blockquote><p></p>
[QUOTE="Sage, post: 462282, member: 5352"] Lets try to say this in a very simple form so everybody can get a grasp on it. EPD - Expected PROGENY Difference EBV - Expected breeding value - 1/2 of EPD If bull A has WW of +42 and Bull B has WW of +20 EPD then a calf born from bull A "should" wean 22lb heavier than a calf born from bull B, having been bred to the same cow in the same environment. The problem here is it is very very hard (almost impossible)to have two calves born from the same cow in the exact same environment sired by different bulls. There is an average EPD for each breed, can be found at their web sites or in the major stud catalogs. EPD's are great for comparing animals within the same breed as long as you have a goal in mind for the progeny. There is work being done with across breed EPD's (Simmital Assoc. mostly) but I'm not up to speed on this at all. Universities and breed associations with people much smarter than me figure the EPD's so I cannot give you any reliable info there. If your wanting to know what a breeding will produce for an epd you can take the average of the parents and this will give you a reasonable estimate. [/QUOTE]
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