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Cattle Boards
Breeding / Calving Issues
Twins from a heifer
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<blockquote data-quote="Son of Butch" data-source="post: 1320919" data-attributes="member: 14585"><p>Let's reason this out. About 95% of heifer/bull twin combos result in the heifer being a freemartin.</p><p>Which would = 1 out of 20 times the heifer is normal.</p><p></p><p>There are two causes for twinning and I believe it's about a 60/40 split, with twins resulting from the embryo splitting </p><p>the reason for twinning 40% of the time and 60% of the time the twins resulted from female releasing 2 eggs and both </p><p>eggs are fertilized.</p><p>Even if it were 50/50 causation.... 50% of all heifers born twin with a bull would be normal rather than less than 10%</p><p>So, I believe it's a hormone crossover in the fluids across the placenta, which Dun already mentioned, as the reason.</p></blockquote><p></p>
[QUOTE="Son of Butch, post: 1320919, member: 14585"] Let's reason this out. About 95% of heifer/bull twin combos result in the heifer being a freemartin. Which would = 1 out of 20 times the heifer is normal. There are two causes for twinning and I believe it's about a 60/40 split, with twins resulting from the embryo splitting the reason for twinning 40% of the time and 60% of the time the twins resulted from female releasing 2 eggs and both eggs are fertilized. Even if it were 50/50 causation.... 50% of all heifers born twin with a bull would be normal rather than less than 10% So, I believe it's a hormone crossover in the fluids across the placenta, which Dun already mentioned, as the reason. [/QUOTE]
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Twins from a heifer
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