Chicks hatch technical tips

Selection of breeding eggs:

The quality of breeding eggs plays a major role in chick hatching. Under the same incubation conditions, the quality of breeding eggs is high, the hatching rate is low, and the quality of breeding eggs is low, so the hatching rate is low. Choosing good breeding eggs is the first step for chicks to hatch successfully. step. Chick eggs must be from a healthy, nutritious population with an appropriate ratio of males to females. Chicks that are too large, too small, too round, too long, convex waist, concave waist, two pointed ends, sand shell eggs, and wrinkled eggs are not suitable Breeding eggs ... More

 

Preservation of eggs:

The storage temperature and storage time of the breeding eggs directly affect the hatchability of chicks. Therefore, the correct and reasonable storage of breeding eggs is an important part of the hatching work. The physiological zero points are the lowest temperature for embryo development, which is also called the critical temperature. Newly-produced poultry eggs can maintain their vitality for a period of time as long as they are kept below their physiological zero points. Breeding egg storage requirements: chicken, duck, goose eggs should be stored within 1 week at T = 12.5 degrees and RH = 75% ... More

Disinfection of eggs:

When poultry eggs are laid into the nest, the surface of the eggshell will be contaminated with many bacteria and viruses, and these bacteria and viruses multiply under appropriate conditions. Contaminated eggs not only affect their own hatching but also contaminate hatching equipment and spread various diseases. The principles of disinfection of breeding eggs are: firstly, it is not harmful to the workers who perform the disinfection; secondly, it does not damage the embryos of the breeding eggs; thirdly, it is necessary to kill bacteria and viruses cleanly and thoroughly. Multiple content

 

Incubate Egg temperature:

In poultry hatching, the quality of the laying eggs is an internal cause, and the incubation temperature is the main external cause. Only qualified breeding eggs can hatch healthy chicks. With qualified breeding eggs, there is no suitable temperature required to ensure the normal development of the embryo, nor can it be obtained. High hatchability and quality chicks. Incubation temperature is divided into "egg temperature" and "giving temperature". "Egg temperature" refers to the surface temperature of the breeding egg. "Giving temperature" refers to the temperature of the space inside the incubator. "Egg temperature" and "giving temperature" are different. .... more

The humidity of eggs hatching:

Embryo development has relatively wide requirements for environmental humidity, generally 40% -70%. But be sure to prevent high temperature and high humidity, high temperature, and high humidity can easily swelter the embryo. Proper humidity allows the embryos to be heated evenly in the early incubation period, which helps the embryos to dissipate heat during the late incubation period. The moisture and carbon dioxide in the air at the time of hatching make the eggshell brittle and facilitate the emergence of broken shells. The requirements for embryonic development on environmental humidity are relatively wide, generally 40% -70%. But be sure to prevent high temperatures and humidity. Hatching ventilation and oxygenation:

In the early stage of hatching, the egg gas metabolism is weak, and the oxygen demand is small. After 4 days of incubation, it gradually strengthens. When 18 days of incubation, the respiration of every 720 chicken embryos is equivalent to the respiration of one person. When hatching to the shell pecking, the allantoic villus function diminished, which turned into lung breathing, and the oxygen demand increased sharply. Some people measured the oxygen consumption of each embryo. The initial incubation was 0.51 mL/hour, the incubation for 17 days was 17.34 mL/hour, and the incubation for 20-21 days was 0.1-0.15 L / hour. Oxygen demand throughout the incubation period 4-4.5L .. more

 

Turning eggs and cold eggs:

In the natural hatching of pheasant birds, the hatched hens turn their eggs 3-5 times per hour. It not only turns the eggs by an angle, but also moves the eggs at the edge of the nest to the middle of the nest so that they are evenly heated. This is the nature of animals. Because egg yolk has more fat than protein, and its specific gravity is lighter than protein, the egg yolk always floats on the protein. If the egg yolk is not turned for a long time, the embryo on the egg yolk will easily adhere to the shell membrane. The main purpose of turning the egg is to change the position of the embryo in contact with the shell membrane to prevent adhesion; promote the movement of the embryo, which is conducive to the development of the blood vessels of the embryo; and maintain the good position of the yolk and the amniotic cavity, which is conducive to the embryo to absorb the protein.