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Thoughts on Across Breed EPD's
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<blockquote data-quote="Anonymous" data-source="post: 6562"><p>I don't put a lot of faith into the across breed EPDs, mainly because I don't think most breeds have reliable EPDs and that makes this entire EPD set unreliable. If you pay attention to accuracy on Angus EPDs, they are quite reliable. Across breed EPDs is another tool to help breeders decide what bull (mainly) will work best in their program. As for as milking, you might be surprised at how some Angus milk. In my part of the country, I have to look for AI bulls with lower milk EPDs. In another ongoing study, MARC has discovered that Angus ribeyes are comparable with Continental ribeyes, while they have maintained their marbling ability. The other British breeds being evaluated, Hereford and Red Angus, have not imporved their ribeye to the same point. Continental breeds have lowered their birthweights, but also their weaning and yearling weights and have not improved their marbling ability.</p><p></p><p>BTW, is the Gelbvieh article you referred to online? I'd like to read it. Thanks....</p><p></p><p>> In an attempt to compare apples to</p><p>> apples in relation to different</p><p>> beef breeds, I took the most</p><p>> recent breed average EPDs and</p><p>> adjusted them based on the 2003</p><p>> Across Breed EPD adjustments.</p><p></p><p>> I compared Angus, Red Angus,</p><p>> Hereford, Limousin, Simmental,</p><p>> Charolais, and Gelbvieh since</p><p>> these are the most popular breeds</p><p>> in my area of the northern corn</p><p>> belt.</p><p></p><p>> When I evaluated the adjusted</p><p>> numbers they didn't look right.</p><p>> For example, the average Angus</p><p>> sire has a 1.6 pound lighter birth</p><p>> weight, 13.1 pound heavier</p><p>> yearling weight, and 12.7 more</p><p>> pounds of milk than the average</p><p>> Red Angus sire. This surprised me</p><p>> since Red Angus, as a breed, has</p><p>> REQUIRED performance testing since</p><p>> the inception of their breed</p><p>> registry.</p><p></p><p>> Several of the other breed</p><p>> comparisons also look incorrect.</p><p>> For example the average Angus</p><p>> sires milk EPD is 2.2 pounds</p><p>> heavier than the average</p><p>> Simmentals. I DON'T BELIEVE THIS.</p><p></p><p>> I found on the Gelbvieh website</p><p>> that the American Gelbvieh Assn.</p><p>> (AGA) was concerned with this data</p><p>> also. As they pointed out, the</p><p>> Across Breed EPDs, which were</p><p>> developed by the Meat Animal</p><p>> Research Center (MARC) were</p><p>> developed based on "very</p><p>> small sample sizes at a single</p><p>> location." Consequently, the</p><p>> AGA has developed their own Across</p><p>> Breed EPDs for comparing Gelbvieh</p><p>> to Angus and Red Angus which look</p><p>> much more in line.</p><p></p><p>> Does anyone else have any thoughts</p><p>> on the MARC Across Breed EPD</p><p>> accuracies?</p></blockquote><p></p>
[QUOTE="Anonymous, post: 6562"] I don't put a lot of faith into the across breed EPDs, mainly because I don't think most breeds have reliable EPDs and that makes this entire EPD set unreliable. If you pay attention to accuracy on Angus EPDs, they are quite reliable. Across breed EPDs is another tool to help breeders decide what bull (mainly) will work best in their program. As for as milking, you might be surprised at how some Angus milk. In my part of the country, I have to look for AI bulls with lower milk EPDs. In another ongoing study, MARC has discovered that Angus ribeyes are comparable with Continental ribeyes, while they have maintained their marbling ability. The other British breeds being evaluated, Hereford and Red Angus, have not imporved their ribeye to the same point. Continental breeds have lowered their birthweights, but also their weaning and yearling weights and have not improved their marbling ability. BTW, is the Gelbvieh article you referred to online? I'd like to read it. Thanks.... > In an attempt to compare apples to > apples in relation to different > beef breeds, I took the most > recent breed average EPDs and > adjusted them based on the 2003 > Across Breed EPD adjustments. > I compared Angus, Red Angus, > Hereford, Limousin, Simmental, > Charolais, and Gelbvieh since > these are the most popular breeds > in my area of the northern corn > belt. > When I evaluated the adjusted > numbers they didn't look right. > For example, the average Angus > sire has a 1.6 pound lighter birth > weight, 13.1 pound heavier > yearling weight, and 12.7 more > pounds of milk than the average > Red Angus sire. This surprised me > since Red Angus, as a breed, has > REQUIRED performance testing since > the inception of their breed > registry. > Several of the other breed > comparisons also look incorrect. > For example the average Angus > sires milk EPD is 2.2 pounds > heavier than the average > Simmentals. I DON'T BELIEVE THIS. > I found on the Gelbvieh website > that the American Gelbvieh Assn. > (AGA) was concerned with this data > also. As they pointed out, the > Across Breed EPDs, which were > developed by the Meat Animal > Research Center (MARC) were > developed based on "very > small sample sizes at a single > location." Consequently, the > AGA has developed their own Across > Breed EPDs for comparing Gelbvieh > to Angus and Red Angus which look > much more in line. > Does anyone else have any thoughts > on the MARC Across Breed EPD > accuracies? [/QUOTE]
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