[Jacob-list] ram ratios

[Mary McCracken]

Do individual ewes produce more ewes than rams?  I know that genetically they are not the determiners, but if the day of breeding within the cycle is relavent, which I believe it is, there may be enough indivivual difference in the ewes receptiveness to affect the outcome.  mary
    -----Original Message-----
    From: Betty Berlenbach <lambfarm at sover.net>
    To: jacob-list at jacobsheep.com <jacob-list at jacobsheep.com>
    Date: Thursday, March 15, 2001 8:10 AM
    Subject: [Jacob-list] ram ratios
    
    
    Steph and Gary,
     
    On the other hand, I believe that Orthodox Jews sire more males than females, which I have read is because of their sexual purity laws, is due to the fact that they cannot have sex with their wives until a week after their menses, which means generally the day of ovulation.  My understanding is that the male sperm swim faster, the female last longer, so WHEN the coitus occurs might well effect gender of progeny.  Don't know if that is true with rams as well as humjans.
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