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Twin calves....how prevalent?
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<blockquote data-quote="Anonymous" data-source="post: 49015"><p>The propensity of an animal to have twins varies amongst breeds and indeed bloodlines. In Simmentals, it can run 14%, in "Beef Twinners" it runs higher than that. Most breeds are considerably less than that. </p><p></p><p>When I had Simmies, we had one bloodline in which every individual had twins at least once. My favourite cow was from this bloodline and had twin heifers unassisted two years in a row. (and they were only 11.5 months apart) She weaned off 90 % of her own bodyweight the first time, 110% the second time (she got pretty thin...)</p><p></p><p>And just to set the record straight, it is the HEIFER which can be sterile if twin to a male, 90% of the time. The bull twin has normal fertility. The condition is called freemartinism.</p></blockquote><p></p>
[QUOTE="Anonymous, post: 49015"] The propensity of an animal to have twins varies amongst breeds and indeed bloodlines. In Simmentals, it can run 14%, in "Beef Twinners" it runs higher than that. Most breeds are considerably less than that. When I had Simmies, we had one bloodline in which every individual had twins at least once. My favourite cow was from this bloodline and had twin heifers unassisted two years in a row. (and they were only 11.5 months apart) She weaned off 90 % of her own bodyweight the first time, 110% the second time (she got pretty thin...) And just to set the record straight, it is the HEIFER which can be sterile if twin to a male, 90% of the time. The bull twin has normal fertility. The condition is called freemartinism. [/QUOTE]
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Twin calves....how prevalent?
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