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Artificial Insemination (AI) for Cattle
A bit more like it
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<blockquote data-quote="regolith" data-source="post: 1614227" data-attributes="member: 9267"><p>Not only that, but my heifer grazier reckons with his years of experience over thousands of heifers, that the undergrown 'rescue cases' that arrive early winter always get in-calf well come spring. And when my heifers were going to one particular farm he thought the fact that the farm struggled all through winter to get weight gain contributed to the bulls often getting 97 - 100% of my heifers pregnant. Conversely, he reports that well-grown heifers that have been fed meal all the way through to their first winter (not just grass-fed heifers that have been looked after) struggle to get in-calf.</p><p></p><p>It's not unusual for dairy farmers here to get poor results running bulls after mating. I have a couple of theories why, the primary one being that it's standard practise to buy the bulls and truck them to their new home and let them loose with the cows for 3 - 6 weeks. A few weeks to get over the transport stress and get used to the farm and routine might make all the difference. I also suspect that for a lot of these guys once the AI is over the hard work is done and they don't really monitor what the bull is doing, so don't even realise that his conception rate is only 30% or so. Hard to figure out how to improve on what hasn't been noticed in the first place.</p></blockquote><p></p>
[QUOTE="regolith, post: 1614227, member: 9267"] Not only that, but my heifer grazier reckons with his years of experience over thousands of heifers, that the undergrown 'rescue cases' that arrive early winter always get in-calf well come spring. And when my heifers were going to one particular farm he thought the fact that the farm struggled all through winter to get weight gain contributed to the bulls often getting 97 - 100% of my heifers pregnant. Conversely, he reports that well-grown heifers that have been fed meal all the way through to their first winter (not just grass-fed heifers that have been looked after) struggle to get in-calf. It's not unusual for dairy farmers here to get poor results running bulls after mating. I have a couple of theories why, the primary one being that it's standard practise to buy the bulls and truck them to their new home and let them loose with the cows for 3 - 6 weeks. A few weeks to get over the transport stress and get used to the farm and routine might make all the difference. I also suspect that for a lot of these guys once the AI is over the hard work is done and they don't really monitor what the bull is doing, so don't even realise that his conception rate is only 30% or so. Hard to figure out how to improve on what hasn't been noticed in the first place. [/QUOTE]
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A bit more like it
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