Green shell layer hatch management

Nowadays, with the development of society, people’s nutritional needs are getting higher and higher, and more and more special poultry are being raised. Now let’s talk about the incubation technology of green shell laying hens:

After the eggs are taken out of the storage room, they are naturally warmed up in the hatchery. After the temperature of the egg surface reaches room temperature, the eggs are incubated in the code tray. The position of the code wheel is the same as the storage position. In addition, the hatching machine is cleaned, disinfected, debugged, and warmed up.

(1) Requirements for incubation temperature and humidity. If the incubator sensor is placed in the space outside the egg tray of the incubator, the temperature of the incubator space is 38.5 degrees on the 1st to 7th day after hatching. The 8th to 18th days are 38 degrees, 37.5 degrees on the 19th to 21st days. If the incubator sensor is placed on the egg in the egg tray, then the egg temperature can be maintained at 37.8-38 degrees from beginning to end. Incubation humidity is different according to the incubator. The heating tube is directly placed in the old incubator heated in the incubator. The inside of the machine is very windy. Incubation humidity is 60% in the 1st to 20th days after hatching, and in the 21st to 24th days it is 70. %. Heating with warm air, a small incubator with a fan inside the machine, the incubation humidity of 45% on the 1st to 20th days after hatching, and 60% on the 21st to 24th days.
(2) Turning the eggs on the 1st to 20th days after hatching, turn the eggs once every 2-3h, turn the eggs 8-12 times a day, flip the angle to 90 degrees, so that all parts of the embryo heat evenly, to prevent embryos Sticky shell. If the temperature difference in each part of the incubator is 0.5°C, adjust it once a day, that is, aligning the upper and lower egg trays, and aligning eggs around the egg tray with the central egg to compensate for the temperature difference.
(3) Sighting eggs: The first egg was carried out on the 7th day after hatching. Eggs were shed and no lean and dead embryos were hatched. Normal embryonic development of fertilized eggs, radial distribution of blood vessels, bright red color; dead embryonic egg color is lighter, there are irregular blood ring, blood arc, no radial blood vessels; no egg shiny vascular network, can only see To the yolk shadow. The second illumination was performed on the 17th day after hatching to remove the dead embryos, and the live normal embryos were transferred to the hatcher and hatcher. The live embryonic eggs are black and red, the air chamber is tilted, the boundary is curved, and there are thick blood vessels around; dead dark red blood vessels are not visible around the dead embryonic egg chambers, the edges are blurred, some eggs are light in color, and the small hair is bright. During the incubation process, embryos and eggs are sampled from time to time in order to grasp the embryonic development and take corresponding measures accordingly.
(4) When the hatching and hatching of the hatching of the chicks takes 18 days, the live embryos should be dropped. After the plate is placed, the temperature and humidity of the hatching eggs are required to control the temperature and humidity, that is, the temperature is appropriately reduced compared to the previous incubation stage, and the humidity is appropriately increased to facilitate hatching. In order to ensure sufficient humidity, the number of water trays should be appropriately increased to keep the water tray clean to facilitate evaporation. Chicken eggs begin to hatch on the 20th day, and hatching is completed after 21 days. After hatching, the chicks are required to stay in the hatcher until the feathers dry out, and then they are taken out and placed in the brooding room or box. Picking brood prematurely, young chicks did not dry feathers, poor adaptability to the environment; quack chicks too late, the young chicks dry feathers, you can move, the youngster may climb out of their own, fell into the water tray drowned. During the hatching period, lights should be turned on as little as possible. Turn on the lights only when they are cubs to avoid damaging the joints when they are crawling. Generally hatching once every 2 hours.
(5) Incubation and management During the incubation period, eggs are observed regularly for temperature and humidity (if they do not meet the requirements, they should be adjusted in time), and records should be made. Generally, the eggs are checked and recorded every 2 hours. Regularly add water to the incubator's water tray and turn the eggs regularly. Pay attention to the change of ventilation and the change of instrument and indicator. If any abnormality, it should be promptly corrected.
After each incubation, the incubators, hatchers and utensils should be thoroughly cleaned, brushed, and sanitized.
Checking and analysis of hatching effects After each hatching, the hatching performance (incubation hatching rate, hatching rate of fertilized eggs) should be counted after each incubation, and analysis should be conducted in order to summarize, accumulate experience, and improve hatchery technical level. In general, captive breeders do not have more than 5% headless eggs and no more than 3% dead eggs. If the rate of dead embryos is too high, it is mostly due to improper storage of eggs, high or low incubation temperatures. If there are too many non-pregnant eggs, there are many reasons such as improper male-male ratios of various flock breeders, diseased breeders, poor male cockness, and lack of ejaculation ability. In case of dead embryos, no more than 3% of the dead eggs are normal, and excessive dead eggs are often caused by poor breeder breeding, inadequate embryonic nutrition, inappropriate incubation temperatures, and poor ventilation. Dead embryo egg hatching late shift after hours of 6% -7%, such as death Peidan too high may be bad in the late incubation conditions, mainly pipping no more of stillbirth. Collect eggs from chickens, collect them from the time of collection until they are hatched, and try to reduce human-induced unfavorable interference to ensure a high hatching rate.
Vaccines should be stored in the dark at 2-8°C and are valid for 1 year. Unqualified vaccines cannot be used.

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