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Breeding / Calving Issues
Sexed seman
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<blockquote data-quote="cow pollinater" data-source="post: 1164488" data-attributes="member: 14661"><p>I have used literally thousands of units of the stuff. Conception is about 60% of what conventional does on cows and around 75% on heifers. Conception and the degree of sexing accuracy is variable between bulls and there is an odd chance of getting semen that does not always produce the desired sex AND doesn't stick that well.</p><p>Plus you have to factor in that 90% accuracy... It's a roll of the dice. That ten percent can really bite you in the butt. The same way that conventional semen is 50/50 probability but we all have years with 70/30.</p><p>My recommendations to my customers are to either use it one time only on hand picked heifers and be ready to breed them twenty one days later without being upset over it or use it first service only on a big group of cattle and be happy with getting 60% of the desired sex and ignore what didn't work.</p><p>You also have to be really careful who you purchase from. One stud sells two levels of sort. I think it's 60% and 90% and the difference is the speed at which they flow it across the sorting machine but the conception is compromised equally on both.</p><p>I have some sorted semen that I've had in my tank for my cattle and I finally gave almost all of it away... It's just so much easier to breed one time and expect them to conceive and not look back.</p></blockquote><p></p>
[QUOTE="cow pollinater, post: 1164488, member: 14661"] I have used literally thousands of units of the stuff. Conception is about 60% of what conventional does on cows and around 75% on heifers. Conception and the degree of sexing accuracy is variable between bulls and there is an odd chance of getting semen that does not always produce the desired sex AND doesn't stick that well. Plus you have to factor in that 90% accuracy... It's a roll of the dice. That ten percent can really bite you in the butt. The same way that conventional semen is 50/50 probability but we all have years with 70/30. My recommendations to my customers are to either use it one time only on hand picked heifers and be ready to breed them twenty one days later without being upset over it or use it first service only on a big group of cattle and be happy with getting 60% of the desired sex and ignore what didn't work. You also have to be really careful who you purchase from. One stud sells two levels of sort. I think it's 60% and 90% and the difference is the speed at which they flow it across the sorting machine but the conception is compromised equally on both. I have some sorted semen that I've had in my tank for my cattle and I finally gave almost all of it away... It's just so much easier to breed one time and expect them to conceive and not look back. [/QUOTE]
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