Yellow Tail Mite High Yield and High Efficiency Technology

Yellow-tailed Migratory genus is a small-medium fish of the family Polygonaceae and Cyprinidae. The fish has strong adaptability and disease resistance, and has a fast growth speed. Its meat is thick and real, delicious, and has high nutritional value. Yellow Tail Miqin can breed naturally in rivers, lakes, reservoirs and other large water surfaces, but its wild resources have been severely damaged in recent years, causing the market to be in short supply and rising prices. At present, the cultivation of yellow-tailed tapirs has developed rapidly, but the technology is not mature enough, resulting in low yields, low commodity rates, and insignificant economic benefits. The high-yield and high-efficiency technologies for artificial rearing of Yellow Tail Miphis are introduced as follows:
First, the artificial breeding of Yellow Tail Miphi

1. Broodstock selection

Yellow Tail Mite 2 reaches sexual maturity in winter, and generally weighs 350-450 g. It can capture broodstock in rivers and lakes during the annual fishing season. Yellow-tailed females are easily distinguishable during sex. Males had more "chasing stars" at the head, lid, tail shank, pectoral fin, etc., and they had a rough sense of touch, and there was a thick milky white semen flowing out of the abdomen and the individual was small; the abdomen of the female fish protruded, and the outline of the ovary was obvious. And soft, no "chasing star" appears.

2. Broodstock breeding

Yellow Tail Mekong is based on plant leaves, diatoms, and filamentous algae, and also eats small amounts of crustaceans and aquatic insects. The broodstock can be single-cultivated and polyculture. It is advisable to raise only about 300 fish per 667 square meters. The broodstock nursery pool applies an average of 50 kilograms of fermented manure every 667 square meters after opening the spring to maintain the transparency of the pool water between 25 cm and 30 cm. Each day, feed 8 grams to 10 grams of soy milk and bran. Flush once every half month, reach sexual maturity until the breeding season. The yellow tail is dense and irritable. To adapt to artificial breeding operations and to reduce death, autumn and spring each year should be regularly pulled several times. The broodstock that has undergone such exercises will encounter pulling nets during production and will not be frightened by jumps and injuries. 3. Induction

During the production season, it is required that the water temperature should be stable above 18°C, and the most suitable water temperature is 20°C-26°C. Commonly used oxytocin, PG in the pituitary gland of salmon has the best effect. The female fish injected 2 mg-3 mg per tail, and the male fish halved. Intraperitoneal injections were performed using a single injection. After the injection, the broodstock is spawned naturally in the spawning pool. Under completely hydrostatic conditions, when the water temperature is appropriate, the oviposition spawns after 6 hours to 8 hours. The eggs of the yellow-tailed tapir were slightly sticky, but unlike eels, which were selective for adherents, most of the eggs sank at the bottom of the pool and were easily detached even if they adhered to the cement walls. When the eggs are collected, the drainage valve of the spawning pond and the hatching tank is opened, and water is poured onto the pool wall. The eggs fall off, and the water flows toward the collection hole, the pool is dry, and the eggs enter the collection box.

4. incubation

The yellow egg has a smaller egg diameter and the water flow in the hatching container should be increased. At a water temperature of 22°C to 27°C, the membrane begins to form after 46 hours and goes out at 58 hours. At this point, the water flow rate should be reduced to prevent seedlings. The larvae hatched for 3 days and began to swim flat. On the 4th day, they ingested food, and then fed 2 days (3 times a day to feed the cooked egg yolks). The fertilized eggs went to the fish lower pool for a total of 7 days to 8 days.

Second, the intensive cultivation of seed

1. Fry cultivation

The method is basically the same as the "Four Home Fishes", and about 200,000 stocks are stocked every 667 square meters. Yellow-tailed larvae are smaller than the fry and are vulnerable to large leeches. Therefore, the fry can not be fertilized prematurely before lowering the pool to reduce the breeding of leeches. Water color tender, small plankton, there are palatable feed, is conducive to the growth of fry. When a large number of large blisters were found in front of the fish seedlings in the lower pool, 90% of the trichlorfon 0.05 g per pool was splashed and killed. Within 15 days after fry feeding, it is mainly fed with yellow soybean milk; after 15 days, fine flour can be fed. After being cultivated for one month and the specifications are about 3.3 cm, it can be converted into fingerlings.

2. Fish breeding

Single-stocking is priced at 8,000 to 10,000 pigs per 667 square meters, with a pond size of more than 10 centimeters; polyculture is priced at 800 to 1,000 tails per 667 square meters, and the pond size is 15 centimeters to 17 centimeters. The foodstuff was mainly fed with bean cake and fed once a day.

Third, the adult fish

1. Polyculture

The larger the size of the yellow tail fish species, the faster the fish grows. The intensive culture ponds, after setting aside the "Four Home Fish", reared about 250 squid winter pieces per 667 square meters, and they could grow to 400-500 grams at the end of the year without adding other feeds. In thin water ponds, only about 150 fishes can be stocked per 667 square meters. It should be noted that it is inappropriate to stock large, ferocious, carnivorous fish in the ponds of polyculture.

2. Monoculture

Due to its strong feeding habits and wide range of food intake, the yellow tailed tapirs grow faster than other apes. Practice has shown that single ponds can achieve higher yields. The intensive nutrient pool requires a depth of 1.5 meters or more and is thoroughly sterilized to ensure that the wild fish do not enter the pool and apply the base fertilizer. Until the pool of a large number of red worms, otters and other organisms appear, can be under the species. Fish species are required to be physically strong and have a size of 10 cm or more. After 150 days of breeding, more than 500 grams of commercial fish can be grown. The Yellow Tail Miculifera has strong adaptability. The water temperature of 15°C-35°C is the best growth period. If the feed is sufficient and the ecological conditions are good, the output per 667 square meters can reach 700-800 kg, and the general output can also be more than 500 kg.

Yellow Tailed Mite has stronger resistance to diseases and fewer diseases, but in recent years there have also been fulminant bleeding diseases in artificial breeding. As long as the disease is completely sterilized before the fish is released, the sterilizing drug can be used to prevent and treat the disease for 2 to 3 times during the high temperature season.