The Sauk Centre herald. (Sauk Centre, Stearns County, Minn.) 1886-current, 1926-03-25
(Care of Matching Eggs Continued)

(Care OF Hatchlng Eggs Contlnued)
Where eggs are turned by hand
ling them either by hand or by turn
ing devices, they may be turned only
a part of turn, but when they are
turned end over end they make an
exact or opposite turn.
If eggs are turned only a fourth
of turn by rolling them over, they
may be turned agaian in less than
the eight hour mentioned above but
they should be turned in a continu
Gus direction because it requires
about hours for the chick or en-
bryo to raise itself into a settled or
fixed position.
The egg should not be turned for
at least 8 hours before it pips the
shell.
The natural position of the chick
at Matching time is for its head part
to be toward the large end of the egg.
Its head doubled back and lies
between it's right leg and right wing
with its beak protruding out and
back under the wing.
The two movable parts of the chick
in this position are its beak with an
upward stroke and then movement
of it's left foot. The movement of
the left foot turns the chick around
in its shell and the upward stroke of
the beak breaks a ring around the
shell just inside the air cell. The
head being in the way of the right
foot causes the left foot to be the
principal propelling power to turn
the chick in the egg. All will turn
in exactlq the same direction which
is opposite the way the hands OF a
clock turn.
1t must be remembered that the
embryo at Matching time changes its
method or source of securing oxygen
and then when the time comes for the
blood vessels to be abandoned that
the chick must be in position to re-
ceive air in the lung or it will die.
It is also remembered that the chick
turns with its head and beak up. At
the time the chick is getting into
position to pip the shell, it may be
turned partly over. So the shortest
road would be for it to tern its head
to the left to get back up to the air
cell which is the proper place for its
beak to enter first and then pip the
shell from the air cell.
Turning the eggs over by rolling
them with a side turn and turning
over the little end the fip-fop meth.
cd, each have the same effect on the
embryo, but permitting the small end
to remain highest at any time from
the twelfth to the eighteenth day of
incubation may cause displacement
and failure. Many turning devices
are successful. 1t is not a question
of the kind of device but it is a
question of how we'll the device does
the work. In addition to- misplace
ments, which causes the chick not to
hatch, improper turning during the
process of development often causes
the chick to be deformed in some
part, often it's feet and legs. Thus,
it will be seen that the turning prob
lem has mostly to do with the posi-
ton of the chick in the egg, which
determines whether it is in the cor
rect position to get out of the shell.
Eggs almost perfect in fertility,
may have been supplied with correct
temperature and the evaporation may
have been right, so the chick may be
perfect in development, but by i'm
proper turning the chicks may be
misplaced in the egg so very few of
them can get out. Each factor has its
own responsibility and its failure pro-
duces certain results.
The principal result of improper
turning is misplacements which are
easily detected at Matching time.
Turning is a mechanical process and
the results are also mechanical. The
chick may be perfectly developed,
but out of position so it can't hatch,
due to improper turning.