The hatching rate of ostrich eggs is a comprehensive index, and there are many factors affecting it, but the most important is the management of the quality and incubation period of ostrich eggs. Grasping the following points will greatly increase the hatching rate. UV Germicidal Lamp, Compact UV Germicidal Lamp, Ultraviolet Lamp Ningbo Sunfine UV lighting Co.,ltd. , http://www.uvlightings.com
(A) Pick up eggs and pick them up in time. The sun cannot be exposed to the sun for a long time, because the high temperature will increase the temperature inside the embryo and cause the embryo to die. In winter, eggs cannot be allowed to freeze, and eggs cannot be picked up by hand. They must be wrapped in sterile towels and sent to the hatchery immediately.
(II) There are two commonly used methods for disinfection of sterilized eggs: First, wash the eggs. Before washing eggs, the soil or dirt on the surface of the eggs must be lightly brushed off, and then wash with a 1:600 ​​ratio of 100 to 100% of poisonous solution. Or spray. After washing, dry naturally in the air, remember that you can not wipe with a damp cloth; Second, fumigation, fumigation must control the dosage and time, generally 40% of formalin per cubic meter 15 ml and 7.5 grams of high Potassium manganate, fumigation time is generally not more than 17 minutes.
(3) Egg storage eggs should be placed in the egg storage room immediately after disinfection. The storage of eggs should generally not exceed 7 days. Eggs should be stored with the air chamber facing upward. Egg storage room temperature should be controlled between 13 ~ 16 °C, preferably no more than 17 °C, humidity control at about 45%, not more than 60%. The air in the egg storage room must be circulated, and the eggs should not be tampered with during storage.
(D) temperature incubation temperature is the determinant of the success of hatching, such as high temperature and low humidity incubation, will make egg intima dry, tighten the embryo, the development of weak fetus, survival rate is low; Similarly, low temperature incubation will extend the incubation The time and causes no absorption of yolk before hatching, edema, etc., and the hatching rate is also low, so the incubation temperature must not be lower than 36°C. The specific situation should be based on different seasons, different incubation periods and temperature differences between the north and south.
(E) Humidity The humidity of hatching is also an important factor affecting the hatching rate. Incubation humidity is too high, it is easy to cause edema birds; hatching humidity is too small, it will make the embryo weightless, causing the embryo to be weak and die. The humidity of hatching is generally determined by the water loss rate of hatching eggs. Generally, the optimum humidity for hatching eggs is generally 22%. If the humidity is too high, the air in the hatchery room must be dehumidified.
(6) Breathing, turning eggs, changing the air and turning eggs are also one of the factors affecting the hatching rate of breeding eggs. Embryonic development requires breathing, inhalation of oxygen from the air, exhalation of carbon dioxide, and hypoxia can lead to embryonic death and increase in young animals. The imported and domestic incubators currently in use can guarantee the exchange of air without causing oxygen deficiency, but it must be ensured that the air entering the incubator is fresh. In addition, in order to ensure that the eggs are evenly heated and prevent adhesion of the shell membrane, the incubator can be set to invert 1 time (90 degree angle) in 2 hours, or it can be inverted 1 time per hour.
(VII) Incubation equipment Since the introduction of ostriches in China, imported hatchery equipment has been used. In terms of hatching effect, domestic machines can be compared with imported machines. However, due to the lack of a dehumidification system, the domestically produced incubator equipment must dehumidify the air in the hatchery room. deal with.
In addition to the above points, hatchery staff must strictly abide by the environmental sanitation system. Staff entering the incubation room must shower, change clothes, change shoes and disinfect water, and non-workers must not enter the hatchery. Only in this way can better and more effective increase the hatching rate of eggs.