The weekly Iberian., 1918-04-06
EGGS FOR HATCHINC
REQUIRE MUCH CARE
EMBRYO DEVELOPMENT BEGINS
WHEN THE TEMPERh UHe
REACHES 20 DEGREES.
GATHER EGGS FREQUENTLY
Eaus For Hstchng Should Be Kept
In Cool and Dry
Place.


spoiled by improper handling between
the time they are produced by the
hen and the time incubation begins
The embryo may be destroyed, or US
development seriously hindered, py
subiectipg The egg TO uneven or eX-
treme temperatures, 10 an improper
moisture cOntent of the air, 70 SUD
den lar or constant vibrations, or 70
lack of turning.
Some development Of the embryo
will take place at comparatively low
temperatures, that is. in the neighbor-
hood of seventy degrees or above. II
the development Of the embryo ls
once started and then stopped by me
temperature going too low, the EN-
brvo VIII he destroyed, Excessively
low temperatures will weaken the VI
talitv of the embryo. II is important,
then. that the eggs should be kept IN
as even p temperature "a possible,
md preferably between the limits or
nifty sixty degrees, Eggs when
are allowed 10 remain in the nest Tor
two or three DAYS AT a time VIII be
subjected Ito great range OF tempera-
tures. During the nights the temper
stures will reach low points. and dur
ina the day the heat of the SUM- as
we'll as the heat from the bodies or
hens upon the neat, Will raise the TEN
pereture 10 the incubation point, SO
that this Ia one of the worst possible
practices. Gather the eggs at least
once day, and during either very
hot or very cold weather. twice day
will be better.
II eggs are kept In a cellar. or
damp place. the moisture OF the air
will have the same action as water
applied directly to the shell 1t VIII
slowly dissolve this coating, leaving
the pores of the shell open and re-
suit in too rapid evaporation when
the eggs are incubated. Keep the
eggs in cool dry place.
The interior of the egg Is com
plex arrangement. II is not neces-
sary that every person burden them
selves with the exact meaning OF all
the component parts of an egg, such
as the vitellus, the blastoderm, the
meso blast the chalazae. and others.
II should suffice to say that the germ
or embryo is situated on the yolk OF
the egg which In turn II suspended In
the center Of the albumin, or white oil
the egg, by thick. cord-like sub
stance. ANY sudden jar, or even
constant vibration. will tend to weak
en- these supporting cords, allowing
| the yolk to move from Its proper po
sition. Then, too. evaporation of water
| from the egg forms an air-cell in the
large end OF the egg The same jars
| or vibrations will sometimes breah
the membranes forming this air-cell
| allowing the contents of the egg te
| move around freely, and destroying
| the egg for Matching purposes. Wher
| II ia necessary to ship eggs for hatch
ing, or otherwise subject them to ial
| or vibration, they should be securely
packed In such way as TO reduce
| the RnttN HS Hluth hS possipic' J" Se
OF the Matching egg boxes which arr
on the market are made with this OBJ
ject In view.
The embryo is found on the uppel
portion Of the yolk. The yolk has |
tendency to float to the top of thu
egg. II left in one position too lonl
the supporting chords becoming weak
ened there Is danger that the yoll
will come into contact with the shell
and become attached. This would, o
course, ruin the egg for incubation
purposes. Then too. with the natura
tendency for liquids to sink and air t
rise. when eggs are left In one pos
tion the air cell may become misplas
ed. or irregular in shape. This re
suits in the developing chicken bein
forced into the wrong position In tn
shell and making successful hate
impossible. These dangers can b
avoided by regularly turning. rolling
or otherwise changing the position Q
the eggs daily.
A. r. Rolf, Poultry Specialist,
Live stock Extension Service, Louis
lana State University.