Quote:
Originally Posted by MojoHerps
As to drowning the snakes, I am not a believer in that. Someone for another site took eggs and purposely turned them and the eggs hatched out fine. They do not breath in the egg like they do once they are out so they really can't drown.
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the information on snake eggs and the reasons they must not be turned is taken from.....
Keeping and Breeding Australian Pythons,edited by Mike Swan
pretty much regarded as one of the best morelia books out there
most morelia keepers,would say the following books are in the top 3 ever written.so i trust Mike Swans information and reasons,in regards to NOT turning eggs
Pythons of the World Volume 1,Australia,by Dave & Tracey barker
Keeping and Breeding Australian Pythons,edited by Mike Swan
The Complete Carpet python,by Nick Mutton & Jason Jullander
maybe i should have wrote,some snakes may well survive egg turning,but due to the lack of chalazae,yolk is not attatched to the egg
when a snake lays eggs.....
the YOLK sinks to the bottom and the embryo floats to the top of the egg,where it ATTATCHES
^^^^^
the above reason,is why i do not reccommend turning eggs
re your link
i agree with the guy in the link,that in the 1 clutch he experimented on the results were good,personally though for peace of mind i would not turn them
KevinS on that link made some valid points,i have pasted them in below.....
According to Kohler's Incubation of Reptile Eggs, changing the position of eggs has the greatest effect during the first third of the incubation period. He cites 10 articles to support this claim. He also says:
""Since the yolk has a greater specific gravity than the cytoplasm, the yolk of the freshly laid egg sinks to the bottom and the embryo floats to the top of the egg (Bellairs, 1991).
The attachment of the reptile embryo marks an important step in the development, since this leads to a drying of the eggshell directly above the embryo. This increases the gas permeability of the eggshell and protects the embryo from lack of oxygen (Thompson, 1985; Whitehead, 1987). If the reptile egg is turned upside down, the embryo ends up underneath the yolk and is trapped there because of its adhesion to the inner shell membrane. The large bulk of the yolk on the embryo prevents normal development and can lead to deformities or death (Eweart, 1985; Ferguson, 1985).
Furthermore, turning of the egg causes the yolk to move, which can tear the extra-embryonic membranes; the allantois is especially sensitive in this respect (Ferguson, 1985; Thompson, 1985; Webb et al, 1987a, b)."
He also says that the extra-embryonic membranes are fully developed after the first third of incubation and their attachment to the egg membrane is so firm that they are unaffected by shearing forces. Just some food for thought while we're on the subject.
^^^^^
the above is acredited to KevinS in the link
cheers shaun
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