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Cattle Boards
Breeding / Calving Issues
From Drovers: Does AI cost or pay
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<blockquote data-quote="regolith" data-source="post: 886119" data-attributes="member: 9267"><p>Dun, had a look at the article and I'm inclined to call BS on the data of 62% calving to natural matings in 30 days... even if you use my dairy cow conception rates of 60 - 65% another third should be in calf - 60 in three weeks plus 40 (cycling)x 60% /3 (1/3 of cows cycled again) is 68 - 70% that should be achieved as a minimum.</p><p>Good arguments can't be made with erroneous data.</p><p></p><p>There's a lot of other arguments favouring either AI/bull or a combination that aren't based on expense/income differences.</p></blockquote><p></p>
[QUOTE="regolith, post: 886119, member: 9267"] Dun, had a look at the article and I'm inclined to call BS on the data of 62% calving to natural matings in 30 days... even if you use my dairy cow conception rates of 60 - 65% another third should be in calf - 60 in three weeks plus 40 (cycling)x 60% /3 (1/3 of cows cycled again) is 68 - 70% that should be achieved as a minimum. Good arguments can't be made with erroneous data. There's a lot of other arguments favouring either AI/bull or a combination that aren't based on expense/income differences. [/QUOTE]
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From Drovers: Does AI cost or pay
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