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Livestock
Dairy Farming
Sexed semen in block calving herds
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<blockquote data-quote="Farmer Keith" data-source="post: 6567958" data-attributes="member: 16808"><p>What’s people thoughts/experiences on using sexed semen in a block calving scenario?</p><p></p><p> I dabbled in it after I first did my AI certificate and before I ran a block calving system but didn’t have a lot of joy. Conception rates were sub 30% if I recall correctly. Has anyone used sexed in cows since and had any better results? Ideally they’d need to be at least 50% in my head or the loss of time would have too great of an impact. (70% with conventional last autumn).</p><p></p><p>I’d only use it for the first 3 weeks on select cows but it would be annoying to see a huge chunk of what would be my best cows lose 3 weeks, especially when the Arla seasonality scheme makes Autumn calving difficult unless your block is super tight anyways, but that’s a different topic entirely!</p></blockquote><p></p>
[QUOTE="Farmer Keith, post: 6567958, member: 16808"] What’s people thoughts/experiences on using sexed semen in a block calving scenario? I dabbled in it after I first did my AI certificate and before I ran a block calving system but didn’t have a lot of joy. Conception rates were sub 30% if I recall correctly. Has anyone used sexed in cows since and had any better results? Ideally they’d need to be at least 50% in my head or the loss of time would have too great of an impact. (70% with conventional last autumn). I’d only use it for the first 3 weeks on select cows but it would be annoying to see a huge chunk of what would be my best cows lose 3 weeks, especially when the Arla seasonality scheme makes Autumn calving difficult unless your block is super tight anyways, but that’s a different topic entirely! [/QUOTE]
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Sexed semen in block calving herds
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