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<blockquote data-quote="WalnutCrest" data-source="post: 1284420" data-attributes="member: 21715"><p>Nature would indicate that animals who breed early and breed back quickly are the most fertile; nature would further indicate that (despite some academic research to the contrary) that this is a reasonably highly heritable trait. </p><p></p><p>Open cows are expensive...hence my observation that I'd seriously look to keep all of the early cycling heifers. That's the very best way to improve herd fertility ... keep all heifers through their first breeding season, cull all who don't breed up on time ... then ... cull any first-timers who don't breed back the second time ... then keep all these cows. The cows who have the quickest breed back should be the ones you'd look to keep a bull back out of (you'd want to keep the bulls who matured and grew the fastest) to further perpetuate the development of superior blood on your farm.</p><p></p><p>:2cents: </p><p></p><p>Or, such is my opinion on the matter (which you obviously didn't ask for!) ... </p><p></p><p>:hide:</p></blockquote><p></p>
[QUOTE="WalnutCrest, post: 1284420, member: 21715"] Nature would indicate that animals who breed early and breed back quickly are the most fertile; nature would further indicate that (despite some academic research to the contrary) that this is a reasonably highly heritable trait. Open cows are expensive...hence my observation that I'd seriously look to keep all of the early cycling heifers. That's the very best way to improve herd fertility ... keep all heifers through their first breeding season, cull all who don't breed up on time ... then ... cull any first-timers who don't breed back the second time ... then keep all these cows. The cows who have the quickest breed back should be the ones you'd look to keep a bull back out of (you'd want to keep the bulls who matured and grew the fastest) to further perpetuate the development of superior blood on your farm. :2cents: Or, such is my opinion on the matter (which you obviously didn't ask for!) ... :hide: [/QUOTE]
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