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implementing a breeding season
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<blockquote data-quote="KNERSIE" data-source="post: 440796" data-attributes="member: 4353"><p>I agree, 4 bulls isn't enough for 230-250 head in a shorter season.</p><p></p><p>Typically in multisire matings, the ratio is 3 bulls per 100 cows in a 65-90 day breeding season.</p><p></p><p>I would look at your records identifying the time of year the majority of your calves are born now, that would be the time best suited to your area season wise from an environmental point of view. That may very well not be the most convenient for you or for your market. Once you've identified this you can decide on your ideal breeding season. Say its a 90 day season.</p><p></p><p>Now take the bulls out of the cowherds, putting them in 1 month before your ideal season and leave them in for 150 days. Or in other words you have bred for one month longer in the beginning of the season and one month longer at the end.</p><p></p><p>The purpose for this is to have a comparison for when its the best time to calve and also to still get the bulk of the herd back in calf as soon as possible. Those who had calved at the end of the new breeding season will only be open for 4 months longer than usual. (3 months after calving rest and then the 4 months wait till the start of the breeding season)</p><p></p><p>The next year you'll have a better idea of the start date of your ideal breeding season, so you put the bulls back in at your prefered date, not a month early this time. You still leave them in a month later than the typical 90 days.</p><p></p><p>the third season you start again at the same date as the previous year, but cut two weeks off atthe end.</p><p></p><p>Next year same story, cut another two weeks of at the end.</p><p></p><p>Keepeing only replacements born in the first 30 days or so of the calving season you should have a determined season after 4 years with minimal loss of income in the first year.</p></blockquote><p></p>
[QUOTE="KNERSIE, post: 440796, member: 4353"] I agree, 4 bulls isn't enough for 230-250 head in a shorter season. Typically in multisire matings, the ratio is 3 bulls per 100 cows in a 65-90 day breeding season. I would look at your records identifying the time of year the majority of your calves are born now, that would be the time best suited to your area season wise from an environmental point of view. That may very well not be the most convenient for you or for your market. Once you've identified this you can decide on your ideal breeding season. Say its a 90 day season. Now take the bulls out of the cowherds, putting them in 1 month before your ideal season and leave them in for 150 days. Or in other words you have bred for one month longer in the beginning of the season and one month longer at the end. The purpose for this is to have a comparison for when its the best time to calve and also to still get the bulk of the herd back in calf as soon as possible. Those who had calved at the end of the new breeding season will only be open for 4 months longer than usual. (3 months after calving rest and then the 4 months wait till the start of the breeding season) The next year you'll have a better idea of the start date of your ideal breeding season, so you put the bulls back in at your prefered date, not a month early this time. You still leave them in a month later than the typical 90 days. the third season you start again at the same date as the previous year, but cut two weeks off atthe end. Next year same story, cut another two weeks of at the end. Keepeing only replacements born in the first 30 days or so of the calving season you should have a determined season after 4 years with minimal loss of income in the first year. [/QUOTE]
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