(I) Preparation before hatching
1. Keep the concrete floor flat before installation. The hatching machine is slightly forward (some models are backwards) inclined to discharge the sewage when cleaning. Keep 2 to 3 meters of operating space in front of the door.
2. Disinfect the hatchery and the hatchery. This work should be done one week before the hatching after the maintenance machinery is over. All indoor corners such as roofs and floors should be cleaned, washed in the machine, disinfected with potassium permanganate, formaldehyde, or sterilized with hatching eggs.
3. Check the egg tray. Look at whether the egg tray frame is firm and whether the wire is dislocated, broken or bent.
4. Body inspection. Repeatedly opening the door to see if it is tight, the body of the four walls, the top, floor deformation, found repairs in time failure.
5. Correct the inspection machine. One week before hatching, it is necessary to systematically check whether the installation is proper and firm, and whether each electrical system is connected, sensitive, and accurate. The method of detecting the accuracy of the thermometer: Use a thermometer with accurate reading and a hatching thermometer to insert into warm water, and observe the temperature difference. If the temperature difference is too large (greater than 0.5°C), the correction value mark should be replaced or taped.
6. Inspection during the test process. During the trial run, the rotation of the system for supplying temperature, humidity, alarm bells, fans, etc., as well as the rotation of the motor shall be checked in detail. The above parts are all normal. After the test machine is in operation for 1 to 2 days, it can be formally hatched.
For the preparation of eggs prior to hatching, the pre-incubation selection of the eggs should be done first, ie external observation, screening and necropsy. Secondly, preheating and disinfection of the eggs prior to hatching should be done.
(B) Management during incubation
1. Egg hatching. Eggs on the plate are preheated and sterilized before hatching. When the eggs are hatched, insert the egg tray into the egg rack in the incubator. But pay attention to the balance of the frame to prevent turning the egg.
2. Temperature regulation and ventilation. After the temperature is adjusted and fixed, it is generally not necessary to move. When the hatching is started, part of the heat is dissipated, and the eggs and egg trays absorb heat at the same time, causing the temperature in the incubator to drastically drop. This is a normal phenomenon. It will gradually return to normal after a period of time. Under normal circumstances, when the internal temperature is 0.5°C or 0.5°C lower, the cause must be checked and adjusted. Therefore, it is necessary to observe the temperature of the thermometer on the door at any time. If any temperature is abnormal, check the temperature in time. System, troubleshooting. With the increase of the age of the embryo, the exhaust port should be properly opened, and it should be fully opened in the later period to maintain the oxygen development of the normal embryo development. However, it should not be opened too early to avoid slower heating and waste of electricity. Generally, the temperature in the incubator is required to be about 39°C during the embryonic days of 1 to 19 days. When the embryonic day 19 is transferred to the initial hatchery, the temperature should be 38 to 38.5°C. When using an incubator, it is important to note that it must be tested at the recommended temperature of the incubator manufacturer's instruction manual, taking into account the geographical conditions in which it is located.
3. Humidity adjustment. The optimum relative humidity in the incubator is generally 53% to 57%. During the incubation, the wet and dry bulb thermometer in the glass window of the door must be regularly observed. In addition, the gauze and the basin of the sensing element must be changed frequently. After the gauze is contaminated with dirt, it must be washed and reinstalled.
4. Turn the egg. It is required to turn the egg once every 2 to 3 hours, and the turning angle is 45. If you control more than one incubator at the same time, it is best to turn all the hatchers in the same direction when turning eggs, which is easy to manage. Record every egg once.
(III) Management of Embryos in the Late Post-harvest Incubation period is 18 to 19 days. It should be transferred to a hatcher to continue hatching until hatching. Increase the room temperature when transferring eggs. The movement should be light, steady, and fast. When embryos and eggs hatch at 20.5 days, they begin to hatch a large number of shells. When more than 30% of shells are hatched, they begin to pull out the chicks whose feathers have basically dried and pull out the shells. When chick feathers are not dried, they are pulled out or out. Leaving the hatchery for too long will affect the health of the chicks. After hatching, hatchers, hatchers and hatchery rooms must be cleaned and sterilized. The hatching tray and the water tray are rinsed and placed in a hatcher for fumigation.
(IV) Exclusion of sudden failures during hatching
1. Power outages. When hatching, in order to prevent power outages, a series of emergency measures must be taken: (1) There must be two sets of heating equipment, one is to bring a generator, and when there is a power outage, the power generation will occur immediately. The hatchery should maintain contact with the local power supply department. When it is known that a power outage should occur, the backup generator should be used beforehand; the second is to set up the fire room and the fire wall in the incubator. In case of blackout, immediately increase the room temperature and keep it at 18.5 to 37.8. Within the range of °C, close the vents on the machine door and on the machine, time-shift and lower the egg tray and other measures, while the ground sprinkled with warm water to regulate the humidity, in order to ensure the normal development of the embryo. (2) Master the temperature in the incubator. If it is a pre-hatching embryo, care should be taken to keep it warm, and embryos in the late hatch should pay attention to heat dissipation. However, it must be controlled according to the season and room temperature.
2. The exclusion of other faults. (1) low fan speed: fan belt aging relaxation, resulting in slower speed, the aircraft airflow is not uniform, there is a high temperature and low temperature dead angle. Sometimes the belt breaks and the fan stops working. Therefore, the belt should be inspected frequently and found to be loose or aged and replaced in time. (2)Fan friction wall: The reason is that the fan is not fixed firmly, swings sideways, makes noise, and should be fixed in time. (3) The temperature inside the machine is out of control: Note that the performance of the electronic relay is poor, and the sensitivity is low, and the temperature can not be accurately controlled in time. Occasionally, the phenomenon that the internal temperature does not rise does not occur, mainly due to the failure of the mercury thermometer, the occurrence of a broken column in the mercury column, and the inability to accurately contact the fixed point. Mercury conductive thermometers must be replaced promptly. (4) The motor is malfunctioning or the casing is hot, and it should be repaired or replaced immediately.
Seasonings & Condiments
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