The African ostrich is one of the largest birds in the world. Its length is up to 1.8m, its head is 2.6m high and its weight is up to 130kg. Today, the United States, Canada, the United Kingdom, China, and other countries are all engaged in this new breed of poultry farming. The following is a brief discussion on the hatching techniques for African ostriches.
1. Collection and storage of eggs
Generally females enter estrus earlier than males, so early eggs are generally infertile. Female ostriches generally begin laying eggs one week after mating. Eggs must come from excellent, healthy birds. When picking eggs, first pick thin shell eggs, sand shell eggs, preserved eggs, and eggs that are too large, too small, too flat, too round, and have too large a contaminated area. For freshly-produced eggs, it should not be immediately hatched. It should be stored for more than 24 hours, but it is better not to exceed 6 days. The storage temperature is preferably 15°C. If the shelf life is longer than 6 days, the temperature must be reduced, the relative humidity of the preserved eggs is 70% to 80%, and the storage room is ventilated. When the eggs are kept, they should head down and flip once a day.
2. Establish perfect sanitation and disinfection measures
Wipe the bird's egg storage room floor with a disinfectant once every 2 days, thoroughly clean every 2 weeks, sterilize, and fumigate with formalin solution. When the ostriches lay eggs, the breeder should use sterile gauze to catch it, and then send it to the incubator for disinfection. The disinfectant is to use formalin 42 ml, potassium permanganate 21 g per cubic meter, and fumigation for 30 minutes. If not, wipe the surface dirt with a gauze soaked in disinfectant and immediately send it to the incubator for disinfection. Before incubating, soak 20-30g with disinfectant (temperature not exceeding 40°C), then dry the eggs with sterile dry gauze and incubate. Incubator floor is wiped once every 2 days with disinfectant. Walls and ceilings are sprayed once every two months with disinfectant and once a month. Before each incubation, the inside and outside of the incubator and the surface should be wiped with a disinfectant and then formalin-based fumigation.
3, hatching conditions
3.1, the appropriate temperature
Experience has shown that when the room temperature is between 18 and 25°C, the incubation temperature is best controlled at 37°C if a constant temperature incubation method is used. With increasing room temperature, the incubation temperature can be appropriately reduced. Variable temperature incubation can also be used to divide the incubation period into early, middle, or late stages. The temperature can be controlled to 36.5, 36, and 35.5°C, respectively. The relative humidity is 22%, 23%, and 25%, respectively. In addition, the eggs can be hatched in three grades of large, medium, small or heavy, medium and light, which can increase the hatching rate and the rate of hatching.
3.2, suitable humidity
For the constant temperature incubation method, the pre-incubation humidity can be controlled at 20% to 25%, the humidity of the transfer to the hatching machine should be relatively increased, usually 30% to 40%, and relatively high humidity at the later stage will cause bird cocoon shells. increase.
3.3. Reasonable ventilation and continuation of eggs
Embryo development requires fresh air and sufficient oxygen, carbon dioxide and various harmful gases should not exceed the standard. Therefore, regular ventilation should be performed. The volume of ostrich eggs is relatively large and the thickness of the eggshell is relatively thick.
3.4. The correct incubation process
When incubating, be sure to make the ostrich eggs face upwards, separate the batches according to the storage period and the egg production period, carefully record them, try not to mix them, so as not to cause the confusion of hatching; during hatching, it is necessary to turn the eggs every 2 Turn egg once in ~3h, and the angle of turning eggs is 90°C～110°C. The hatching procedure is: selection of eggs→disinfection→storage room→incubation room→incubation→disinfection→starting→starting the chicks to avoid cross infection.
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