Channa asiatica, commonly known as the seven-star fish, belongs to the genus Odonata, which is mainly distributed in the area south of the Yangtze River. Moonberry meat is delicate, delicious, high protein content, and has the health care value of nourishing, adducting muscle, promoting blood circulation, accelerating wound healing, etc. It is very popular in southern China, Hong Kong, Macao and Southeast Asia, and the market price is relatively high. In the south of China, Yuexiu culture has formed a large scale, especially in Guangdong and Guangxi, and has achieved good economic benefits. 1. The biological characteristics of the lunar new moon The moon luge is a benthic fish. It prefers to live in rivers, lakes, ponds, ditches, and creeks with luxuriant weeds. It lurks in the night and lurks in the grass or caves during the day and at night. Come out for food; for meaty fish, eat live fish, shrimp, aquatic insects and other live food, but also eat a small amount of aquatic plants. Radon is a wide temperature fish, the survival temperature is 1 ~ 38 °C, the optimal growth temperature is 15 ~ 30 °C, the water temperature is lower than 12 °C began to stop feeding, winter sneak into the cave or mud in winter. The ability to withstand hypoxia is very strong. When the water is deprived of oxygen, the head can be exposed to the surface of the water. With the help of oxygen in the air in the organs, it can live for a long time even in the water-less or water-free wet zone. Good jump, And there is a tendency to run back upstream. The month of the month's breeding season is from April to July each year. The sexual maturation age is two winter years. Under artificial breeding conditions, sexual maturity can be achieved at the first winter, and the absolute fecundity is 2000~8000 grains/tail. The egg is spherical. Golden yellow, containing oil globules, floating eggs, eggs produced after the formation of block. The spawning type is batch spawning type. The broodstock has the instinct to protect the eggs and protect the young. 2 adult fish breeding technology Yueshao adult fish breeding, can be single or mixed, but mixed effects with the four major fish is not ideal, a single effect is better. 2. 1 The preparation of aquaculture ponds can be done by digging pits in the corner of Tiantou, or in cement ponds in the open space behind the house. The earthen pond area is generally 0.2~2 mu, the cement pool area is 20~80 square meters, the pool depth is about 1.5 meters, drainage and irrigation are convenient, there is a fish-repelling facility at the inlet, and 30%~50% of water-living lotus plants are on the surface of the pond, and use bamboo poles or The rope is fixed in a certain position, or a vine-like scaffold is set up on the pond to shade; a cylinder, a tile, a pot or a bamboo tube is set in the bottom of the water for the fish to inhabit. Aquaculture water should be sufficient, clean and pollution-free. In the first seven days under the fingerlings, ponds should be cleared and sterilized. The quicklime or tea bran can be used to kill pests and diseases. After the third day of clear pond, it was applied to a septic tank or large grass to cultivate zooplankton. After the toxicity of the culture pond disappears, the fish species can be released. 2. 2 Fish species to be transported and stocked The fish species to be placed should be of uniform specifications, robust in physique, and 5 cm or more in length. Short-distance transport can be used for fish tanks, and long-distance transportation is better with fish tanks and aeration, and avoid using nylon bags for oxygenation. Fish species are bathed with 2% saline for 5 to 10 minutes before stocking. The stocking density is generally 10,000 clay ponds per mu and 200 cement ponds per square meter. The stocking time is better from May to June. It is best to choose sunny and windless weather from 8 to 10 am. 2.3 Feeding Management 2.3.1 Bait Moonfish is a typical carnivorous fish that prefers animal feed. In the first few days after entering the pond, the zooplankton in the pond were quickly devoured. At this time, zooplankton, leeches, fly maggots and a small amount of artificial compound feeds were added. Afterwards, the artificial compound feed was gradually added. The content of crude protein in artificial feed is 38%~42%. Feeding materials must be timed, quantitative, qualitative, and positioning. Usually two times a day feeding, 1 in the afternoon and 1 in the afternoon, should not be fed more, and not too full. To set the food table when feeding, use a bamboo basket or shallow bamboo charcoal to fix it on the surface of the water at 25 cm, eat while eating, and observe the feeding situation. The amount of daily feeding is adjusted according to the feeding conditions, which is generally about 3% to 10% of the fish's body weight. 2.3.2 The water temperature in the water quality management pool shall be controlled between 20°C~34°C, high temperature (>35°C) or ground temperature ( 2.3.3 The daily management shall mainly pay attention to water change, anti-escape, and tour ponds. Lord, each feeding will inevitably have residual bait, these baits will accumulate over time, and in high-temperature and hot weather, it will cause water quality deterioration, breeding of pathogens, and flooding of ponds. Usually pay attention to changing the water, washing the table, and keeping the water fresh.The moon's ability to escape is very strong, especially during rainy days, when changing water or in the early morning, so the pond dike should generally be more than 0.5 meters above the water surface, or Mesh girth around the Gaotang embankment: When watching the pond, it is necessary to observe the fish movements and find out that there are outliers, black bodies and other anomalous conditions that need to be dealt with in a timely manner, and pay attention to the protection against snakes, rats and birds. When there are different size specifications, it is necessary to divide them in time to avoid mutual killing.3 Fish disease prevention and control on the moon in the wild state rarely occurs, but under artificial breeding conditions, if improper feeding and management, environmental conditions deteriorate, fish resistance decreased It can cause fish diseases, therefore, it is necessary to adhere to the principle of prevention and prevention during the cultivation period 3.1 Prevention Methods Pay attention to changes in water quality, change water frequently, and change slowly and slowly when changing water; Keep the water fresh, feed the nutrient-rich feedstuffs, prohibit the deterioration of the quality of the feed, and ensure that it is properly fed. Do a good job of drug prevention. Spill 25ppm lime or 10ppm bleach once a month in summer and autumn. Situation, timely treatment 3.2 Common diseases prevention of dizziness: diseased fish body black, loss of appetite, cluster, serious fish swim in the water, struggling and spinning, and then sinking death. Treatment available methamidophos 0.3 Ppm Quan Quan spill, or 40% formalin 40ppm + Legion 4ppm mixed Quanchiposa.Bad disease: For bacterial disease, the body of the fish body (especially the head and tail) appears red or white lesions at the time of onset , scales off, muscle congestion, ray rot.Treatment can use chlorine dioxide or strong chlorine 0.3ppm Quanchiposa, use two times, add 3 to 3 grams of erythromycin or chloramphenicol per kilogram of feed from the third day . Inflammation: The abdomen swells in the abdomen, the anus is red and swollen, the abdomen is lightly pressed, the yellow liquid flows out, the outliers swim independently, the anatomy shows visible intestinal hemorrhage, there is no food in the intestines, and chlorine dioxide or strong chlorine 0.3ppm Sprinkle, use again on the next day, and mix with terramycin powder, add 3 grams per kilogram of feed, feed 3 to 5 days.. Trichodinosis: fish scales fall off, fins are incomplete, muscle tissue gray, body thin , black, silkworm congested and decayed, microscopic examination of body surface mucus and cocoon silk covered with body parasites.Treatment with 0.5ppm copper sulfate +0.2ppm ferrous sulfate Quanchiposa.Syrphus: the lesion site grows a white Hairy hyphae, sick fish loss of appetite, slow action until death. Treatment can be 0.2ppm malachite green solution Quanchiposa.
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