1. The collection of the mountain Ruizong eggs During the spawning season in Shanrui, the spawning ground was carefully inspected every morning. The places where the eggs were laid were often traces of loosening of the sandy soil. The sandy soil appeared moist and surrounded by radial paw prints. When there is an ovary, do not move the granules immediately. Only mark them side by side (because the embryos have not been fixed soon after spawning, the egg collection will affect the development of the embryos due to vibration). Generally wait until 24 hours before collection.
When picking eggs, carefully pry the covered sand off with your hands, and keep your hands light so as not to touch the broken eggs. After the eggs were removed, the fertilization was checked and the animal's poles of the fertilized eggs with their white spots pointed upwards were placed neatly in the picking box and moved to the hatchery for artificial hatching. Spawning grounds should be cleaned after each spawning. During the dry season, water is sprayed to keep the sand moist so that the mountain can lay eggs again.
2. The hatching of S. rufipogon eggs is usually done by artificial hatching. Artificial incubation is to put the selected fertilized eggs within the artificially controlled temperature range and maintain a certain humidity in the sand bed. When the accumulated temperature value reaches a certain value, the embryonic development is complete and the hatchlings will be broken out. Due to the artificial hatching of quail eggs, the temperature and humidity can be kept relatively stable and the conditions are suitable, so the general hatching time is shorter and the hatching rate is also higher.
There are two methods for artificially incubating the eggs of S. rufipogon: normal temperature incubation and constant temperature incubation.
(1) Incubation at room temperature is generally carried out indoors without the need for temperature control equipment. Use wooden boxes or other breathable containers as incubators. Spread 5 centimeters thick sand on the bottom of the incubator and discharge the fertilized eggs on it to discharge 2 to 3 layers. The top of the egg covers 3 to 5 cm thick fine sand. The moisture content of sand is 7% to 10%, which is based on the formation of sand by hand and landing. To improve hatching rate, proper humidity is the key. If the moisture content of the sand is too high, then the quail egg is easy to get rid of the gas and die; if the water content is too low, the moisture in the quail eggs will evaporate easily, and the eggs will easily dry up and “breakâ€. After the fertilized egg is placed, a label should be inserted to indicate the date and quantity. In Guangzhou, at the natural temperature, the fertilized eggs hatched from 76 to 83 days and the hatching rate was 80.5%.
(2) Thermostatic incubation is also called rapid incubation. That is, incubation is performed in an automatic temperature-controlled constant temperature hatching room. It is different from the normal temperature incubation to keep the temperature constant, the same as other operations. When the incubation temperature was 28°C, the incubation time was 71-78 days and the hatching rate was 95%. When the incubation temperature was 30°C, the incubation time was 60-67 days, and the hatching rate was 82.9%. When the incubation temperature reached 33°C, all the embryos died.
During the hatching process, pay attention to daily management, and always check and adjust the temperature and humidity. The temperature check is: insert two thermometers in the hatched sand and suspend in the air, and check once each morning, afternoon and evening. The humidity of the sand is checked daily, depending on the degree of dryness and humidity. After spraying water every day, loosen the sand layer to prevent compaction, but do not stir the fertilized eggs. Pay attention to the air circulation in the hatchery and do a good job of preventing moisture from the enemy.
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