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The "GOLDEN EGG" - Feed Efficiency??
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<blockquote data-quote="Frankie" data-source="post: 546639" data-attributes="member: 13"><p>All the bull tests I'm familiar with test bulls in contemporary groups. In Angus, that's bulls born within a 90 day window. Our test station uses a 60 day window for Angus. Most bull tests have a formula to choose the "winner" of the test. Ours uses the ADG and the Adj yearling weight indexes. If you hold a calf back, you may get a high ADG, but you're not likely to have a high yearling weight. Or if you feed him heavily, you're more likely to have the higher YW, but your ADG may suffer. Some other tests use marbling, REA, EPDs, WDA to identify the "best" bull on a test.</p></blockquote><p></p>
[QUOTE="Frankie, post: 546639, member: 13"] All the bull tests I'm familiar with test bulls in contemporary groups. In Angus, that's bulls born within a 90 day window. Our test station uses a 60 day window for Angus. Most bull tests have a formula to choose the "winner" of the test. Ours uses the ADG and the Adj yearling weight indexes. If you hold a calf back, you may get a high ADG, but you're not likely to have a high yearling weight. Or if you feed him heavily, you're more likely to have the higher YW, but your ADG may suffer. Some other tests use marbling, REA, EPDs, WDA to identify the "best" bull on a test. [/QUOTE]
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