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<blockquote data-quote="KNERSIE" data-source="post: 665794" data-attributes="member: 4353"><p>I agree that over a period of time you'll average close to 50:50 bulls and heifers, especially so with natural service, but in my experience selective AI and more so selective AI on induced heats tend to skew the ratio in favour of bulls. I run usually 60+% bulls with AI so replacement heifers from AI are usually not as plentiful as I'd like so I try and use a highly maternal bull as a clean up sire on the registered herd. My thinking is that I am unlikely to keep many bulls out of the clean up sire, but am very likely to sell heifers or even retain a few out a good maternal bull of my own breeding.</p></blockquote><p></p>
[QUOTE="KNERSIE, post: 665794, member: 4353"] I agree that over a period of time you'll average close to 50:50 bulls and heifers, especially so with natural service, but in my experience selective AI and more so selective AI on induced heats tend to skew the ratio in favour of bulls. I run usually 60+% bulls with AI so replacement heifers from AI are usually not as plentiful as I'd like so I try and use a highly maternal bull as a clean up sire on the registered herd. My thinking is that I am unlikely to keep many bulls out of the clean up sire, but am very likely to sell heifers or even retain a few out a good maternal bull of my own breeding. [/QUOTE]
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