Operation details when using incubator to incubate poultry eggs
First of all, before using the incubator to incubate poultry eggs, we will give you a training on the operation details:
Quality and selection of breeding eggs
The quality of seed eggs plays a major role in the hatching rate, whether incubating seed eggs with incubators or using local methods. Under the same incubation technology conditions, the hatching rate of incubators with high quality of seed eggs is high, and the hatching rate of incubators with low quality of seed eggs is low, so it is necessary to seriously select good seed eggs.
Preservation of seed eggs
The storage temperature and time of seed eggs used for hatching directly affect the hatching rate after hatching, whether incubated by incubator or other incubation methods. Therefore, the correct and reasonable storage of seed eggs is an important link in hatching. Under the same conditions of incubation technology, if the seed eggs are well preserved, the hatching rate of the incubator will be high, and if the seed eggs are not well preserved, the hatching rate of the incubator will be low, or even completely unable to hatch. Therefore, we should carefully do a good job in the preservation conditions and work of the eggs before hatching.
Sterilization of breeding eggs
When breeding eggs are produced through the cloaca and laid into the egg nest, the surface of the egg shell will be contaminated with many bacteria and viruses, which will multiply in a large number under suitable conditions. It not only pollutes the eggs, but also pollutes the incubation equipment and spreads various diseases. Therefore, the seed eggs used for hatching must be strictly and carefully disinfected before being put into the incubator for hatching. Under the same conditions of incubation technology, if the eggs are disinfected well, the hatching rate of the incubator will be high; if the eggs are not disinfected well, the hatching rate of the incubator will be low.
Temperature of poultry hatching
Poultry seed eggs are hatched in the incubator. The quality of the eggs is the internal cause, and the temperature in the incubator is the main external cause. Only qualified seed eggs can hatch healthy chicks. With qualified seed eggs, but the incubator does not have the appropriate temperature to ensure the normal development of the embryo, and the incubator cannot hatch high hatching rate and high-quality chicks. The temperature control standard of the incubator is related to the variety of poultry, the size of eggs, the type of incubator and the incubation season. Because chicks can only be hatched at the right temperature in the incubator, and chicks can not be hatched at the places where the temperature is too high or too low, so the uneven temperature of all parts in the incubator directly affects the hatching rate.
Incubation humidity and egg weight loss
The development of poultry embryos requires a wide range of humidity in the incubator, but the high temperature and humidity in the incubator should be strictly prevented. The high temperature and humidity in the incubator can easily suffocate the embryo. The appropriate humidity in the incubator makes the embryo evenly heated at the early stage of incubation, and is conducive to the heat dissipation of the embryo at the later stage of incubation. The water in the air and carbon dioxide in the incubator when hatching make the eggshell brittle, which is conducive to breaking the shell and hatching. In the process of hatching eggs in the incubator, the weight of the eggs is continuously reduced. The lower the humidity in the incubator, the greater the weight loss. There are many factors that affect the weight loss of the eggs in the incubator. Different types of birds have different weight loss under the same incubation technology conditions. The best way is to measure the weight loss rate of the eggs in the incubator during the incubation process to determine whether the given incubation humidity is appropriate.
Ventilation and oxygen infusion of avian embryos
At the early stage of incubation in the incubation equipment, the embryo gas metabolism is weak, and the oxygen demand is small, and gradually increases after 4 days of incubation. At the 18th day of incubation, the respiratory volume of every 720 chicken embryos is equal to the respiratory volume of a person. Therefore, the air vent of the incubator should be opened at the later stage of incubation. When hatching to shell pecking, the function of the chorionic villus of the allantoic sac decreases, and changes to lung respiration, with a sharp increase in oxygen demand.
Inverted eggs and cold eggs of poultry embryos
In the natural incubation of birds, the hatched female bird turns the eggs 3-5 times per hour with its beak. It not only turns the seed eggs at an angle, but also moves the seed eggs at the side of the nest to the middle of the nest to make them evenly heated. This is the natural nature of animals. Because the egg yolk has more fat than protein and lighter weight than protein, the egg yolk always floats on the protein. If the incubator does not turn the egg for a long time, the embryo on the egg yolk will easily adhere to the shell membrane. The main purpose of turning eggs in the incubator is to change the contact position between the embryo and the shell membrane to prevent adhesion; Promote the embryo movement and promote the development of embryo blood vessels; Maintain a good position between the yolk box and the amniotic cavity, which is beneficial for the embryo to absorb protein. In addition, no matter how good the incubator is, there is also a temperature difference. Another function of turning eggs is to change the position of seed eggs in the incubator to make them evenly heated. Therefore, poultry breeding eggs must be turned over regularly when incubated in the incubator.
Development of avian embryos and egg exposure
The eggs need to be hatched in the incubator for 5 days. The egg box can be self-made. The box is 30-50 cm long, 25 cm wide, and about 30 cm high. The 100-watt bulb is used as the light source for the egg box in the area with power supply, and a hole with a diameter of about 2.5 cm is dug in the part aiming at the light source. The kerosene lamp can be used as the light source in the area without power supply, or an egg hole can be dug in the window facing the sun. The room is covered, and the sun light is used to illuminate the eggs. Incubator is used for hatching, and the number of eggs is large. The egg illuminator is used for hatching, which is fast and labor saving. Take out the egg tray to light the egg from the incubator, put it on the table, and directly light it on the egg tray. The light source shines from the blunt part of the egg from top to bottom