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The bulls we will be using on the 150 Braford and f1 Brafiord cows.
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<blockquote data-quote="Travlr" data-source="post: 1744552" data-attributes="member: 42463"><p>Gotta have bulls before you can have steers...</p><p></p><p>Have you ever noticed that some years you will have a bunch of one sex calf and then suddenly every calf is the opposite sex? Ever traced back nine months to figure out when the new grass came on?</p><p></p><p>Sperm has differing motility and longevity depending on whether it is female or male. Female sperm isn't as fast, but it lasts longer. male is speedier, but loses steam faster. So the trick is to influence the medium the sperm are swimming in as much as possible before breeding. A more acid or base swimming pool, if you will. For more male calves you need to feed more protein and mineral and stay away from high carbs. Both the bull and the cow should be on the same ration. Also, the cow should only be maintaining weight and not gaining. Optimal time to breed is when she is in the midst of her heat cycle. </p><p>For females you feed more carbs and less protein or minerals, breed early in the heat cycle, and the cow should be gaining weight for several weeks prior to breeding.</p><p></p><p>This won't be as sure as sexed semen but it's as good as it gets in pasture breeding. Depending on which sex you are looking for you will get different results. You can expect about 67% with one and just over 70% with the other.</p></blockquote><p></p>
[QUOTE="Travlr, post: 1744552, member: 42463"] Gotta have bulls before you can have steers... Have you ever noticed that some years you will have a bunch of one sex calf and then suddenly every calf is the opposite sex? Ever traced back nine months to figure out when the new grass came on? Sperm has differing motility and longevity depending on whether it is female or male. Female sperm isn't as fast, but it lasts longer. male is speedier, but loses steam faster. So the trick is to influence the medium the sperm are swimming in as much as possible before breeding. A more acid or base swimming pool, if you will. For more male calves you need to feed more protein and mineral and stay away from high carbs. Both the bull and the cow should be on the same ration. Also, the cow should only be maintaining weight and not gaining. Optimal time to breed is when she is in the midst of her heat cycle. For females you feed more carbs and less protein or minerals, breed early in the heat cycle, and the cow should be gaining weight for several weeks prior to breeding. This won't be as sure as sexed semen but it's as good as it gets in pasture breeding. Depending on which sex you are looking for you will get different results. You can expect about 67% with one and just over 70% with the other. [/QUOTE]
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The bulls we will be using on the 150 Braford and f1 Brafiord cows.
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