Techniques and methods for hatching chicks in incubators

1. Select breeding eggs and sterilize: Select fertilized eggs as breeding eggs, sterilize the incubator, and then place the large end of the eggs on the egg tray for sterilization.

2. Temperature and humidity: If the constant temperature incubation method is adopted, the temperature can always be controlled at 37.8℃, the humidity of 1-7 days is 60-65%, the humidity of 8-18 days is 50-55%, and the humidity of 19-21 days It is 65-70%, that is, the principle of high in the front, flat in the middle, and higher in the back.

1. Selection of eggs and disinfection

1）. The eggs need to be fertilized eggs. It is advisable to choose the eggs that have been stored for less than 7 days. The longer the storage time, the lower the hatching rate.

2）. After selecting the eggs, first sterilize the incubator, then put the eggs with the big end up and put them on the egg tray for disinfection. Generally, fumigation and disinfection can be carried out with potassium permanganate and formaldehyde according to the ratio of 1:2. Note: To enhance the disinfection effect, the incubator can be heated to above 20°C before disinfection.

2. Temperature and humidity

1.)Temperature

(1) Constant temperature incubation method

The temperature was always controlled at 37.8°C.

(2) Variable temperature incubation method

The incubation principle is "high in the front, flat in the middle, low in the back", that is, the temperature for 1-6 days is 38.5°C, the temperature for 4-16 days is 37.8°C, and the temperature for 17-20 days is 37.6°C.

(3) Attention

When the room temperature is below 15°C, the incubation temperature should be set according to the actual temperature in the incubation chamber.

2.)Humidity

The principle of hatching humidity is "high in the front, flat in the middle, higher in the back", that is, the humidity for 1-7 days is 60-65%, the humidity for 8-18 days is 50-55%, and the humidity for 19-21 days is 65% -70%.

3. Ventilation and egg turning

1.) Ventilation

(1) The carbon dioxide content in the air around the embryo egg should generally not exceed 0.5%. If the carbon dioxide content exceeds 1%, the mortality rate will increase.

(2) Generally, the incubator will have its own ventilation and ventilation program when it leaves the factory. Usually every 0.5 hours, the ventilation fan will automatically ventilate for 25 seconds to provide sufficient oxygen for the embryos.

2.) Turn the egg

Generally, in the 21 days of hatching the chicks, it is usually only necessary to turn the eggs in the first 1-18 days, and the eggs are turned once every 2 hours, and the egg turning angle is 45°.

4. dry the eggs and take the eggs

1.)Dry eggs

(1) Drying the eggs is generally carried out at the same time as turning the eggs. If the incubation conditions are suitable, it is generally not necessary to dry the eggs.

(2) If in summer, the temperature is higher than 30℃and the hatching eggs are in the middle stage, they generate a lot of body heat, and the temperature in the incubator is too high, generally it is necessary to dry the eggs.

2,)according to the egg

(1) The eggs need to be inspected 3 times during the incubation period. If they are white eggs, the first inspection should be done on the 5th day, and brown eggs should be selected on the 7th day. Refined eggs.

(2) Select the 11th day for the second time, and the 18th day for the third time.

5 hatching

1. When the eggs hatch to 18 days, they will start to peck the shells, and the eggs need to be moved to the hatching baskets to make them hatch in the baskets.

2. When most of the chicks have hatched, but some eggs have not hatched (there is a sound in the eggs), artificial labor is required. You can tap the eggshell with your hands first. If you hear an empty sound, it means that the blood vessels have dried up. During midwifery, you can pull out the head of the chick and let it slowly emerge from the shell.

3. If the chick is stuck to the egg membrane, it can be soaked with warm water first, and then gently peeled off. If blood is encountered, you need to stop immediately.