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Rule of thumb
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<blockquote data-quote="novaman" data-source="post: 675845" data-attributes="member: 2744"><p>I expect the first calvers to wean a calf similar in weight to any of the other cows in the herd. The reason being I always use the latest purchased bull to breed the heifers and expect these calves will have the best genetics in the herd. On any given year I will usually pick 15-20% of my replacements from the group of heifers out of first-calvers. It is impossible to tell the difference in size. As far as milk heritability goes, 40% seems to be stuck in my head.</p></blockquote><p></p>
[QUOTE="novaman, post: 675845, member: 2744"] I expect the first calvers to wean a calf similar in weight to any of the other cows in the herd. The reason being I always use the latest purchased bull to breed the heifers and expect these calves will have the best genetics in the herd. On any given year I will usually pick 15-20% of my replacements from the group of heifers out of first-calvers. It is impossible to tell the difference in size. As far as milk heritability goes, 40% seems to be stuck in my head. [/QUOTE]
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