Egg Industry - November 2017 - 13
There is a cutoff date of 18 days of incubation for
sexing embryos based on accepted practices used
in the biomedical industry where chicken embryos are
used in the production of some vaccines. To keep media and animal rights activist pleased, it is important to
cut off the testing of eggs before they start to look too
much like chicks, O'Sullivan explained.
"It would be very hard to justify it if it isn't acceptable in the biomedical industry," he said.
Two potential methods
In ovo gender determination based on the hormone
level in the allantoic fluid is known as endocrinological
testing. The process takes place on Day
10 of incubation. This enzyme-linked immunosorbent assay (ELISA) test looks for
estronsulphate concentration in a sample
of fluid which is removed from the egg.
"From Day 9 onward, you can find
significant differences in the concentra-
tion of estronsulphate between
males and females,"
O'Sullivan said. The perks
to this method is that it offers
good accuracy and a loss
in fertility of under five
percent. However, this
type of testing still has
some kinks to work out
before the method can
be considered useful.
"With current evaluation,
RESEARCH HAS BEEN
UNDERWAY ... to gender sort
the eggs prior to incubation.
November 2017 ❙ www.WATTAgNet.com
Monika Wisniewska | Dreamstime
EggIndustry ❙ 13