STANDARD EGG FOR HATCHING.

A hatchery egg is ; an egg that comes from the parent flock that is bred properly according to good production pratices including a proper male/female ratio ,according to the technical requirements of each species or breed including proper body weight and fed with a nutritionally appropiate feed(good quality)

PROPER WEIGHT ...not too big,not too small.(NOTE that the weight depends on species and breed e.g

1.Chicken 45-48 grams. 

2.Hyline brown chicken 53-58 grams.

3.Duck 55-60 grams.

-Typical (not malinformed) shape and colour.

-Has never been dirty - scraping manure or dirt of the shell does not make an egg clean. The shell is not rough ,not too thick ,nit too thin. No blood stains or cracks in the egg.

HOW TO RECOGNISE THAT HAS BEEN STORED FOR TOO LONG? 

Eggs stored for long time (more than 7 days) often have the following charecteritics.

Egg shells shells are glossy. Big air cells are seen upon candling. The yolks move quickly upon egg rotation. The yolk can stick to one end of the egg which can be seen upon candling.

Why is it neccessary to store eggs properly ? 

To ensure high hatchability and healthy chicks, eggs for incubation must be stored properly.Handle eggs carefully everytime they are moved. Eggs must be kept in a well ventilated,dry,clean area.The storage must be maintained at proper temperature and humidity so that they will be no rotten and embryos will not die or develop too early.

MOST SUITABLE TEMPERATURE AND HUMIDITY.

Temperature

7 day 16°C - 18°C.

4 day 18°C - 24°C.

Humidity

7 day 75%-80%.

4 day 75%-80%.

Do not store eggs in temperature below 12°C and over 26°C. Store eggs as early as possible to avoid early embryo development. Do not store for more than 7 days.

Eggs muststored in cold or air conditioned rooms should not be placed in incubators right away to avoid temperature shock that can lead to high ratio of dead embryos. Eggs taken out of the air conditioned rooms can "sweat" and should be left outside to warm up until the shells are dry before setting them into the incubator.

How can eggs be stored for incubation if they are no storage rooms?...if they are no storage rooms ,move eggs directly to incubation- do not cool them down at this point.