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Cattle Boards
Breeding / Calving Issues
after bag strutts how long until they come in
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<blockquote data-quote="jnowack" data-source="post: 274630" data-attributes="member: 3954"><p>If the cows have not cycled, pulling the calves off for 72 hours may "jump start" their cycle and I would expect them to be in heat within a week. But this does not always work. If they were already cycling but did not breed, pulling the calves will probably not do anything unless they short cycle from the stress possibly.</p><p></p><p>The reason this works sometimes is that the calf nursing causes hormones in the cow to be released in the cow that stimulate milk production and milk let down. These hormones are antagonistic to the hormones that control the heat cycle so removing them can trigger heat. The other thing that helps bring them in is that the energy and nutrients that are being used for milk production are freed up while the calf is not nursing.</p><p></p><p>I would probably preg check first rather than stress the cows and calves for nothing.</p></blockquote><p></p>
[QUOTE="jnowack, post: 274630, member: 3954"] If the cows have not cycled, pulling the calves off for 72 hours may "jump start" their cycle and I would expect them to be in heat within a week. But this does not always work. If they were already cycling but did not breed, pulling the calves will probably not do anything unless they short cycle from the stress possibly. The reason this works sometimes is that the calf nursing causes hormones in the cow to be released in the cow that stimulate milk production and milk let down. These hormones are antagonistic to the hormones that control the heat cycle so removing them can trigger heat. The other thing that helps bring them in is that the energy and nutrients that are being used for milk production are freed up while the calf is not nursing. I would probably preg check first rather than stress the cows and calves for nothing. [/QUOTE]
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Cattle Boards
Breeding / Calving Issues
after bag strutts how long until they come in
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