An “X” may be marked on one side of several
eggs and an “0” on the other side for visually
indicating the movement of the eggs in the
turning ring.
The automatic turner turns the eggs once
each hour. Embryos in the eggs rest and grow
during the periods between turns. Each turn
lasts for 30 seconds during which time the
eggs are gently rolled over.
EGG TURNING DIAGRAM
Turning should start on the first day of
incubation and be discontinued one day
before hatching of 16 day eggs and two days
before hatching of eggs that take 21 days or
longer to hatch.
MANUAL TURNING SCHEDULE
A reasonable egg turning schedule and one
that has proven to be successful is to turn
the eggs the first thing on arising in the
morning; beginning at 6:00 a.m. ; mid
morning - approx. 10:00 a.m.; mid afternoon,
approx. 2:00 p.m.; again at 6:00 p.m. and
when you retire for the night, approx. 10:00
p.m. This is five times per day. Hatches
have been produced with three turns a day
or even with only two turns, but in general
the percentage is low and the chicks do not
survive well.
AUTOMATIC TURNING
Automatic turning is a far more successful
method of hatching eggs. An automatic
turner does not forget, it does not want to go
away on the weekends and it turns day and
night at set intervals. Most automatic turners
are set on the basis of one movement each
hour.
TOP VIEW OF INCUBATOR WITH AUTOMATIC TURNER
The turner sits at the right side of the
incubator. The incubator and turner are
attached together by two L shaped screws
in the lower corners of the turner case. The
short L screw must be in the front corner
and the long L screw in the rear corner of
the turner. Study the top view of the
incubator and automatic turner on page
four. The turned up ends of the L screws
engage through two holes in the rim of the
incubator base. The turner pull rod hooks
over a knob on the side of the incubator.
The automatic turner pulls and pushes the
dome back and forth on the base. It is
necessary that the two screws projecting
inside the dome wall from the knobs
engage two slots in the top of the turning
ring strap, (refer to the drawing).
POSITION OF EGGS
An incubating egg should set in a normal
position as it would on a flat surface; that
is with the large end slightly higher than
the point. An egg that persistently has the
small end elevated may cause the embryo
to be misoriented with the head toward the
small end. In this misoriented position,
the chick is likely to drown when pipping.
Therefore, it is quite important that the large
end of the eggs should be slightly higher
than the small ends, or as they would lie
naturally on a flat surface.
THERMOMETERS AND WICKS
Having several spare thermometers and
wicks is good insurance. Glass
thermometers are easy to break and
certain accidental circumstances may
cause the spirits to separate. Having extra
thermometers for comparison against
each other will lead to accuracy.
1690 Brandywine Ave.
Chula Vista, CA 91911
Telephone (619) 216-3400
Fax (619) 216-3434
www.lyonelectric.com
e-mail: lyonelec@cts.com
Bulletin 281-161 Page Four
Marsh Turn-X Incubator with Automatic Turning, SB00711 • enasco.com/science/
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