First, strict selection of eggs must be from good, healthy birds, when selecting eggs, first shell eggs, sand shell eggs, steel eggs and large, too small, too flat, too round, too large a contamination of the eggs Pick out. For freshly-produced eggs, they should not be immediately hatched, but should be stored for more than 24 hours. However, it is better not to exceed 6 days. The storage temperature should be 15°C. If the shelf life is longer than 6 days, the temperature should be reduced. The relative humidity of the preserved eggs should be 70% to 80%, and the storage room should be ventilated. When the eggs are kept, they should head down and flip once a day. Second, improve sanitation and disinfection measures Sterilization of ostrich egg storage rooms. Wipe the floor with disinfectant once every 2 days, wash and disinfect for 2 weeks, and fumigate with formalin solution. 2. Egg disinfection. When the ostriches lay eggs, the breeder must use sterile gauze to catch them and then send them to the incubator for disinfection. The disinfection dose is 37% formalin, 42 ml, and 21 g potassium permanganate for 30 minutes. If it is not caught, use the gauze soaked in disinfectant to wipe off the surface dirt and send it to the incubator immediately. Before incubating, soak for 20-30 seconds with a disinfectant (temperature not exceeding 40°C), then dry the eggs with a sterile dry gauze and incubate. 3. Incubation chamber disinfection. Incubator floor is wiped once every 2 days with disinfectant, walls and ceilings are sprayed once every 2 months with disinfectant, and 1 month for comprehensive cleaning. 4. Incubator disinfection. Before each incubation, the inside and outside of the incubator and the surface were wiped with a disinfectant and then formalin was used for fumigation. Third, the appropriate conditions for hatching The right temperature. Experience has found that when the room temperature is 18 °C ~ 25 °C, if the use of constant temperature incubation incubation temperature control at 37 °C best, with the room temperature, incubation temperature can be reduced appropriately. Variable temperature incubation method can also be used to divide the incubation period into the early, middle and late stages. The temperature can be controlled to 36.5°C, 36°C, and 35.5°C, respectively. The relative temperatures are 22%, 23%, and 25% respectively, and the eggs can be According to the three grades of large, medium, small or heavy, medium and light, the extension hatching can increase the hatching rate and the rate of health-care. 2. The right temperature. For the constant temperature incubation method, the pre-incubation temperature can be controlled at 20% to 25%, and the humidity transferred into the hatching machine should be relatively increased, usually 30% to 40%. The relatively high humidity at the later stage is favorable to the chick clam shell. 3. Reasonable ventilation and cool eggs. Embryo development requires fresh air and sufficient oxygen, carbon dioxide and various harmful gases should not exceed the standard, so regular ventilation should be carried out. The ostrich eggs have a larger volume and thicker shells, especially since the later stage produces more heat and should mainly cool eggs. 4. Correct corruption operation process. When incubating, be sure to make the ostrich eggs face upwards. Clear the batch according to the storage period and egg production period. Carefully record and try not to mix the eggs so as not to cause hatching confusion. During hatching, eggs must be turned over. The hatching procedure is : Egg selection → Disinfection → Storage room → Incubation room → Incubation → Disinfection → Birding → Birding operation to avoid cross-infection.
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