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Cattle Boards
Artificial Insemination (AI) for Cattle
Schiefelbein Gable 311
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<blockquote data-quote="Son of Butch" data-source="post: 1803876" data-attributes="member: 14585"><p>Not the ranking system's fault, but how people use it and their expectations.</p><p>Too many hope genetics will mask poor management.</p><p>25 traits and the lowest heritability of all 25 traits is Milk at only 12% meaning 88% is environment.</p><p>2nd lowest is HP (heifer pregnancy) at 15% = 85% environment</p><p></p><p>Other than ced and birthweight where epds can be used effectively is Stature 59% heritable and Mature Height has 69% correlation with Mature Weight 35% heritable. It's easier to shorten or increase cow stature with genetics than any of the 25 traits. I put a lot more emphasis on cow size fitting the environment than epd Milk or other traits.</p><p>You are right, the $M is a complex formula, but I think Milk epd in the formula has less than 10% influence in calculating $M</p><p></p><p>p.s.</p><p>W.B. my comments aren't directed at you, but just general commentary</p></blockquote><p></p>
[QUOTE="Son of Butch, post: 1803876, member: 14585"] Not the ranking system's fault, but how people use it and their expectations. Too many hope genetics will mask poor management. 25 traits and the lowest heritability of all 25 traits is Milk at only 12% meaning 88% is environment. 2nd lowest is HP (heifer pregnancy) at 15% = 85% environment Other than ced and birthweight where epds can be used effectively is Stature 59% heritable and Mature Height has 69% correlation with Mature Weight 35% heritable. It's easier to shorten or increase cow stature with genetics than any of the 25 traits. I put a lot more emphasis on cow size fitting the environment than epd Milk or other traits. You are right, the $M is a complex formula, but I think Milk epd in the formula has less than 10% influence in calculating $M p.s. W.B. my comments aren't directed at you, but just general commentary [/QUOTE]
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Artificial Insemination (AI) for Cattle
Schiefelbein Gable 311
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