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A new way to study cow profitability?
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<blockquote data-quote="HerefordSire" data-source="post: 618795" data-attributes="member: 4437"><p><em>You are correct. There is no need in calculating common denominator values. We just need to know the variances as long as you manage all cows as one group. If you manage more than one group, then you would obviously have another variance, or another variable to contend with and likewise incorporate the variable into the formula.</em></p><p><em></em></p><p><em>Do you want to remove any variables?</em></p><p><em></em></p><p><em>Something that is bothering me though.....I need a couple of posters to agree that cows providing three years of calf data will overcome the heredity factor of 0.4 for RFI. Also, I need to see the reference that the heredity of 0.4 is estimated accurately or from a reliable source that can be believed.</em></p></blockquote><p></p>
[QUOTE="HerefordSire, post: 618795, member: 4437"] [i]You are correct. There is no need in calculating common denominator values. We just need to know the variances as long as you manage all cows as one group. If you manage more than one group, then you would obviously have another variance, or another variable to contend with and likewise incorporate the variable into the formula. Do you want to remove any variables? Something that is bothering me though.....I need a couple of posters to agree that cows providing three years of calf data will overcome the heredity factor of 0.4 for RFI. Also, I need to see the reference that the heredity of 0.4 is estimated accurately or from a reliable source that can be believed.[/i] [/QUOTE]
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A new way to study cow profitability?
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