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<blockquote data-quote="cherokeeruby" data-source="post: 83170" data-attributes="member: 199"><p>It has always seemed to me that as a bull got older his calf ratio started leaning toward bull calves. My theory is that the younger bulls service the cow earlier in her cycle due to their eagerness and with female semen living longer than male semen by the time the egg is ready to be fertilized there are more female semen alive.</p><p></p><p>With hereford bulls with our brahman cows we had more bull calves than heifers even with young bulls, that one I attributed to the brahmans ability to outrun the hereford and brahmans dislike for all cattle that don't carry brahman blood. Therefore the bull is breeding her late allowing the faster male semen to beat the female to the egg.</p><p></p><p>Other brahman breeders have noticed this too. A brahman bull will breed a angus or any other bos tarus breed but after he is through he will butt her a couple of times and then return to his group of brahman blooded cows.</p><p></p><p>You can call me crazy now.</p><p></p><p> :roll: :lol:</p></blockquote><p></p>
[QUOTE="cherokeeruby, post: 83170, member: 199"] It has always seemed to me that as a bull got older his calf ratio started leaning toward bull calves. My theory is that the younger bulls service the cow earlier in her cycle due to their eagerness and with female semen living longer than male semen by the time the egg is ready to be fertilized there are more female semen alive. With hereford bulls with our brahman cows we had more bull calves than heifers even with young bulls, that one I attributed to the brahmans ability to outrun the hereford and brahmans dislike for all cattle that don't carry brahman blood. Therefore the bull is breeding her late allowing the faster male semen to beat the female to the egg. Other brahman breeders have noticed this too. A brahman bull will breed a angus or any other bos tarus breed but after he is through he will butt her a couple of times and then return to his group of brahman blooded cows. You can call me crazy now. :roll: :lol: [/QUOTE]
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