The incubator “Ryabushka” is a household device designed for incubation of eggs of agricultural birds on the personal farmsteads.

The incubator should be operated in closed heated premises under normal climatic conditions at ambient temperature from +15º to +35ºC.

Avoid installation of heaters and heating devices, draughts or direct sunlight in the place of the incubator installation.

Technical data

Capacity of the incubator per

chicken eggs up to 70 pcs.

duck eggs up to 55 pcs.

goose eggs up to 35 pcs.

In the automatic mode the incubator provides temperature within the range of 37.7º-38.3ºC.

Safety instructions

Do not swicth on the incubator with the cover removed.

Do not install the incubator near the open fire or heating devices.

Do not pull the cord.

WARNING! To avoid damage to the casing it is STRICTLY prohibited to bring the temperature inside the incubator over 50 ° C.

Do not place foreign objects on the cover and press down on it.

Setup procedure

Unpack the incubator, remove the cover from the incubator casing.

Carefully release the rubber bands from the regulator and thermometer.

Place two plastic meshes on the bottom of the box.

To pour water raise gently one of two plastic meshes. Using a measuring cup fill in fully the incubator paths with water.

Ser the mesh into place.

Insert the thermometer into the thermometer hole provided in the cover of the casing. Carefully install the cover on the casing.

Insert the sensor into the hole on the cover of the incubator,

Insert the plug into the thermoregulator socket.

Plug in the thermoregulator into a 220V outlet.

Adjust the temperature according to the guidance for the thermoregulator.

Operation procedure

Remove the plug from the outlet and carefully remove the cover from the incubator. Place the eggs horizontally.

For the first time, turn the eggs over 12 hours after their laying in the incubator. After that turn the eggs twice a day (in the morning and evening),

Check that water is available in the paths. Add water, if evaporated, every 3-4 days.

The temperature control sensor and lower part of the thermometer should be set closer to the surface of eggs for most accurate determining the temperature in the incubator and its adjustment.

Preparing for incubation

Before laying eggs in the incubator, it is required within one day to test the thermostatic control system to ensure that the temperature is maintained with an accuracy of 1 degree and you have learned to adjust it.

It should be remembered that temporary cooling of eggs is not dangerous (good brood obtained even when the incubator is cooled to room temperature within 3 hours).

The eggs for incubation are selected fresh with shelf life of no more than 3-4 days. The maximum period of storage of chicken and duck eggs is 6 days, turkey eggs – 8 days, goose eggs – 10 days. Do not wash eggs before incubation, because they are covered with a thin film capable to kill microbes

Hatching eggs should be of a regular shape, not spherical and not too oblong, have smooth homogeneous shell with no cracks, no lime bumps, the colour of the shell must correspond to the bird species or race.

The size of the eggs should be medium. From small eggs there will hatched weak chicks, which are more difficult to be grown and kept safe. Besides, the size of eggs is inherited, and the future female will lay small eggs. Oversized double-yolked eggs are often unsuitable for incubation.

When selecting eggs for incubation, you should inspect them from the ouside, and also inspect them carefully in the light with the help of the eggtester. They should have inactive yolk, which occupies a central position during inside light inspection, without distinct borders. The air chamber should be in the blunt end of the egg and barely noticeable. If the air chamber is large, the egg was stored for a long time and is not suitable for incubation.

The eggs ready for incubation should be stored in the dark well ventilated place at a temperatures from +8 … 12ºC and relative humidity of 75 …80% in the upright position with the blunt end being down. If the eggs are stored longer than 3 days before incubation, it is required to turn them every day in the horizontal position, otherwise the yolk floats and sticks to the shell, the egg will become unsuitable for incubation. But even when properly stored the eggs go through changes, and their quality decreases.

The eggs being irregular in shape are not suitable for incubation i.e. with any defects in the shell (cracks, thin shell, a large number of large lime bumps, roughness); double-yolked eggs with the yolk being displaced or sticking to the shell; with the air chamber being displaced, mobile or floating; with blood and other foreign inclusions; eggs, in which the egg-white is mixed with the yolk after the yolk membrane rupture, the egg-white or yolk being stained with blood; eggs infected with mold; eggs not translucent or with dark spots; “old eggs” that are stored for a long time: if testing, there is visible an enlarged air chamber, the yolk is large, dark, close to the shell or stuck to it, its boundaries being outlined more sharply than in a fresh egg; the egg-white is liquid, so the yolk is very mobile; eggs, in which there are visible signs of developing, but dead embryos. The yolk loses its shape and seems to be mixed with the egg-white.

The eggs to be laid in the incubator must be of the same size. If you put the eggs weighting from 50 to 70 grams in the incubator, the hatching time will become longer, and the chicks will vary in age. To avoid it the eggs are grouped by weight: 50 … 60 and 61…70 grams. Lay the eggs in the incubator one-by-one: first – larger eggs, then – smaller eggs.

The required accuracy of temperature settings is 1 degree.

To control the development of embryos, the eggs are inspected through the eggtester after laying in the incubator: chicken eggs – on 6th and 19th days; duck and indo-duck eggs – on 7th and 26th days; goose eggs – on 8th and 28th days.

At the first inspection reject the unfertilized eggs: they are transparent to the light, with no signs of embryo development. The well-developed embryo is already immersed in the yolk and is badly visible. During translucence there is a bright field in its place, in the background of which there is the shadow of the embryo. The blood vessels network is distinctly seen. The poorly developed embryo is not immersed in the yolk, placed close to the shell and therefore clearly visible. There is no bright field around it, the blood circulatory system is underdeveloped. Usually this happens during prolonged underheating or excessive humidity.This defect can be corrected by changing the temperature mode. If the embryo is lost, the blood vessels have a dark colour, there is visible the blood in the form of a ring, and lines or curves.

At the second inspection at the end of the incubation, there is clearly visible a rough border of the air chamber, movements of the beak. In the eggs with dead embryos there is observed solid dark mass without blood vessels, the content of the egg is opalesce.

On the 20th and 21st days the chicks start hatching. One day before hatching there is heard audible squeak from the eggs, and then there is pecking. Do not intervene in the process of hatching. Only in exceptional cases if the film is stuck to the chicken feathers and it cannot free itself you should help it. During hatching do not open the incubator to take the hatched chicks one by one; do not cool the eggs, change the incubation mode, to switch on lighting, etc. It is better to take out the young birds at a time or three times.

The control of the operating mode of the incubator is of primary importance. If the incubation mode is broken, there may be incorrect development of embryos and even death.