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Do any other commercial people use the Marc studies?
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<blockquote data-quote="Frankie" data-source="post: 677686" data-attributes="member: 13"><p>Yes, it's says compare ANIMALS, not breeds.</p><p></p><p></p><p></p><p>That's why the E stands for Expected, not Exact.</p><p></p><p></p><p></p><p>It's not a proven fact that Chars will sire calves that wean heavier than Angus. You believe in the MARC data, look at this:</p><p></p><p>Angus bull Sitz Identity, AAA #14949480, has a BW EPD of 2, WW of 70 and YW of 131. Add the MARC adjustment factor of 0 and you get BW 2, WW 70 and YW 131.</p><p></p><p>The ABS Charolais bull Wrangler has a BW EPD of -6.3, WW 21 and YW 45. Add the MARC adjustment factors of 9.7, 38 and 52 and you get these EPDs: BW 3.4, WW 59 and YW of 97. Obviously, his numbers don't match up with the Angus.</p><p></p><p>Does that mean that the Angus breed produces heavier calves? No, it means this MARC data should be used to compare two bulls; not two breeds.</p><p></p><p></p><p></p><p>The MARC adjustment factors were created to help producers compare individual bulls across breeds. That's what they do. They do NOT compare breeds.</p></blockquote><p></p>
[QUOTE="Frankie, post: 677686, member: 13"] Yes, it's says compare ANIMALS, not breeds. That's why the E stands for Expected, not Exact. It's not a proven fact that Chars will sire calves that wean heavier than Angus. You believe in the MARC data, look at this: Angus bull Sitz Identity, AAA #14949480, has a BW EPD of 2, WW of 70 and YW of 131. Add the MARC adjustment factor of 0 and you get BW 2, WW 70 and YW 131. The ABS Charolais bull Wrangler has a BW EPD of -6.3, WW 21 and YW 45. Add the MARC adjustment factors of 9.7, 38 and 52 and you get these EPDs: BW 3.4, WW 59 and YW of 97. Obviously, his numbers don't match up with the Angus. Does that mean that the Angus breed produces heavier calves? No, it means this MARC data should be used to compare two bulls; not two breeds. The MARC adjustment factors were created to help producers compare individual bulls across breeds. That's what they do. They do NOT compare breeds. [/QUOTE]
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Do any other commercial people use the Marc studies?
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