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5 Cards in this Set
- Front
- Back
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What are 3 justifications for performing a breeding soundness exam (BSE)?
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1) Evaluate potential fertility prior to sale
2) Evaluate fertility of individual bull(s) prior to introduction to herd or periodically during use 3) Evaluate bull(s) as source of infertility in a herd |
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Approximately ______% of unselected bulls do NOT pass a BSE
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15-20%
-bulls who don't pass aren't necessarily sterile, just sub-fertile |
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Bulls that don't pass the BSE aren't necessarily sterile, just subfertile. Why are sub-fertile bulls such a problem?
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-Subfertility in bulls is associated with delayed conception in cows
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BSE is very reliable for detecting bulls with ______ and those that are clearly unsatisfactory.
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High potential fertility
-hard to distinguish b/w bulls that easily passed examine and one that barely passed |
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Why can using more than one bull instead of performing BSE's be an issue?
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-economically doesn't make sense
-when mix males usually one establishes dominance and in a breeding situation one will do 80% of breeding, usually older one that is dominant so if this one is infertile then the other one could be very fertile and doesn’t get a chance to breed |
