Posted by:
gailt
at Tue Apr 18 11:38:00 2006 [ Email Message ] [ Show All Posts by gailt ]
in the so called "Blue Book" of python and boa husbandry. The actual name of the book is "The Reproductive Husbandry of Pythons and Boas" by Richard A. Ross, M.D., M.P.H. and Gerald Marzec. I bought this book years ago from Al Zulich at Harford Reptile Breeding Center. I don't know if the book is still for sale but there maybe some still laying around somewhere 
There is a section in the book that discusses the rotating of eggs and as of the writing in that book, no studies had been done on what rotation did to python eggs. It did mention a study done on the rotation of loggerhead sea turtle eggs which found the death rate varied with the stage of incubation.
And in alligator snapping turtles, early turning of the eggs resulted in significant mortatlity. According to the book, the death is thought to be caused by the yolk coming to rest on the developing embryo.
According to the authors of the book, they believe that sometime after 24 hours of the eggs being laid, they become fixed in a polar position and that it isn't wise to move the eggs too much after 24 hours.
I hope this helps. 
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gail 
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Jay, there is a bit about egg rotation - gailt, Tue Apr 18 11:38:00 2006