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Post by anielka on Jul 28, 2013 18:39:10 GMT 10
I was readinG Sharon's post about high protein resulting in more boys in a litter. We sexed our litter yesterday - four girls. Now I know there were one or two more babies in the litter originally - possibly further girls but possibly boys.
What makes mice harm or select their newborn babies? Could they tell sex at birth and respond accordingly?
Other things that "seem" to affect sex ratios in a litter are by "tricking" the mouse into believing there are more males in the world than females: an older male from a colony of male siblings mated with a younger female from an area which is near other males (so the scent is discernible and has...theoretical hormonal feedback on young female) seems to produce more female mice. Completely anecdotal.
Also completely anecdotal is that a lone mouse with lots of space will have a larger litter than a mouse continually kept with nanny sisters and siblings. Again I've not gathered any statistics.
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Post by andy on Jul 28, 2013 21:13:16 GMT 10
I found this link www.pnas.org/content/100/8/4628.full to a study that suggests that a diet that is higher in fat will produce more males and lower in fat will produce more females
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Post by mousekateers on Jul 29, 2013 22:39:01 GMT 10
I found this link www.pnas.org/content/100/8/4628.full to a study that suggests that a diet that is higher in fat will produce more males and lower in fat will produce more females that works the opposite for me. I lower the protein and have a higher carb content and get more females.
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