Dollfish price high learning good technology rearing
Culture environment
The water temperature is suitable for the growth of the water temperature is 16 °C-22 °C, if the water temperature exceeds 26 °C, the growth of the giant salamander will be affected, sometimes there will be a "summer sleep" phenomenon, the temperature is too high can also cause the death of the billfish, but if the altitude is too high, The environment temperature and water temperature are too low, the baby salamander has a short effective growth time, the growth rate is slow, and the breeding is not cost-effective. Therefore, breeding of giant salamanders, the site is best to choose 500-800 meters above sea level, the winter is not cold, summer without heat.
The water quality requires that the juvenile fish Xi Jie is afraid of dirty, and the water quality in the environment is very strict. Wild dolphins generally live in deep mountain gorge rivers where natural vegetation is good and the environment is pollution-free. In the mountainous area, artificial breeding of giant salamanders, it is best to choose the small streams and springs that have constant flow for a long time, and to use the bottom water of large and medium-sized reservoirs that are fresh. In short, the water quality should be fresh, fresh, non-polluting, with high dissolved oxygen and neutral pH. From the mountainous areas, farmland, mines, and urban tap water, some chemical substances may exceed the standard and cannot be used as breeding water for giant salamanders.
The environment is quiet and the baby fish is calm and afraid of the wind, so we need a quiet breeding environment. In the mountainous area, it is advisable to choose a suitable area for the construction of a dollfish farm, surrounded by mountains, luxuriant trees, sparsely populated areas, relatively independent, quiet, and cool areas. Some farmers use natural caves or artificial tunneling in places where water is available. They can maintain constant temperature, avoid light, and be quiet. They can also prevent escape and theft. The breeding effect is very good.
Scientific building pool
After the aquaculture ponds have been established, they should be shaded, protected from light, and managed to facilitate the establishment of aquaculture ponds. Because the giant salamanders have bullying, starvation, bullying, and habits of killing each other when there is not enough food and extreme hunger, the breeding of giant salamanders requires the establishment of a large number of small ponds, which are sorted and bred separately. The aquaculture pond generally adopts a brick-concrete structure, and each small pond area is determined according to the size of the giant salamander, with a small 1-2 square meters, a large 2-4 square meters, and an unlimited pool shape, but the pool height needs to be more than 1 meter. The bottom slab of the pool forms a void, or a foam plate is floated on the surface of the water for the pups to hide in the shelter. The inner wall of the pool needs to be wiped with cement to prevent it from escaping or scratching. There is a walkway between each row of breeding ponds for convenient daily management such as feeding.
In and out of the water system, each aquaculture pond must be provided with a water inlet and a water outlet, generally located at both ends of the pool. In order to prevent cross-contamination during the infection of the juvenile fish, the inlet of each aquaculture pond must be directly connected to the main water inlet pipe and the main pipe should be filled with water. In addition, sewage outlets should be set up at the bottom of the culture tanks to eliminate the feces and metabolites of the baby fish and keep the water clean.
Disease prevention and control
In the artificial breeding environment, due to environmental, bait, and density effects, artificial breeding of giant salamanders is more than tens of times greater than the incidence and mortality of wild salamanders. To improve the survival rate of salamanders, we must strengthen the daily management, and pay attention to Prevent disease.
Dolphin is a carnivorous amphibious animal, often based on animal feeds. It is poor in palatability and lacks essential nutrients, especially animal protein and certain trace elements such as zinc, iron, calcium and vitamins. And so on, it will induce the killing of the giant salamanders.
Symptoms: Early in the early stage of the disease, the tail of the tail stalk often has red dots or red spots near the base of the tail stalk. The surrounding tissue is congested and inflamed, and the epidermis is slightly gray. When the disease period is too long, a sore lesion is formed and the lesion often adheres to a large number of pathogenic bacteria. And debris, severe muscle necrosis occurs at the site of the lesion, the exoskeleton of the tail is exposed, the appetite is diminished or stops eating, the ability to move is significantly weakened, the tail swings weak, and soon it will die.
Treatment When you find that a giant salamander is suffering from endemic disease, it should be kept in isolation in time. If you do not raise it separately, you will suffer from endless problems, which may affect the entire breeding farm. First, pathogens continue to spread in the pool water and infect other individuals. Second, healthy individuals can suck the blood of the affected area at any time, causing the disease to become more serious and transmit pathogens to healthy individuals.
Use 0.3-0.4ppm strong chlorine concentration or chlorine dioxide 0.2-0.3ppm concentration Quanchiposa (including habitat land, bait stations, etc.) once a day, once every 3-4 days for a course of treatment; the heavier disease of the giant salamander, first Dip the lesions with 15-25ppm potassium permanganate or 0.3-0.5ppm malachite green solution for 15-20 minutes, and thoroughly clean the adherents on the wound surface, then apply anti-inflammatory drugs such as Xiaozhilong ointment or sulfur ointment. The affected area is cured once a day for 4-7 days.
Each kilos of body weight use chloramphenicol 2-3 grams, Kana original powder 2 grams, vitamin C2 grams, vitamin E2 grams, vitamin B2 grams, and mix well into the feed, fed for 3-4 days.
Seedling delivery
It is recommended that farmers purchase artificially grown, disease-free seedlings near the artificial breeding center of the giant salamander. Currently, juvenile fingerlings are more expensive. In order to ensure the survival rate of cultured animals, first-time breeders must purchase baitfish weighing more than 100 g. Such seedlings are not only easy to survive but also grow rapidly.
Disinfection and application of gentian gentian violet for sterilization before stocking are conducted. The method is to immerse the fleas for 20 minutes after medicine and water are 1:100. The gentian violet solution has little skin irritation and can be effective. Prevents surface infections of fungi and bacteria.
Due to the fierce and belligerent living habits of the giant salamanders, especially the adult salamanders, when they feel hungry due to lack of food, they often bite at night, lightly injured, and severely devour the baby salamanders. Therefore, the salamanders must be bred according to size and strength. Sorting, proper thinning. In general, depending on the size of the rearing tank and the fry, each tank should be placed in 5-10 larvae of the same size, and the fish hour can be dense and large. It should be noted that because the bricks, cement, and lime used in the construction of the pool are all alkaline, the newly established breeding ponds cannot immediately be put into the dollfish seedlings and must be soaked in the pool for 2-3 days. After clean, let the filthy water be discharged, and then rinse repeatedly with water for more than 3 times until the water poured into the pool is neutral (PH value is about 7) before the baby fry can be released. If there is no PH test paper test, you can also put the fish fry in the pond and try to raise them for 2-3 days, and be sure to put on the baby fry after no problem. If you use the old pond, you need to use 1 mg of bleach and 0.5 mg of crystal trichlorfon in advance to sterilize and kill insects. Rinse with clean water before you can put the baby fry.
Feed Management
Types of feed The recipes of the dollfish are very extensive. All kinds of fish, shrimps, crabs, loach, squid, frogs, clams, insects, and pigs, cattle, sheep, chickens and other livestock and poultry can be fed, but the food must be fresh. In order to solve the problem of long-term feeding of bait, artificial breeding in mountain areas can be accompanied by cultivation of small trash fish, or cultured earthworms, yellow mealworms, snails, and so on. The giant salamanders have a strong ability to fight hunger. They will not starve to death for long periods of time without eating. However, after a long period of hunger, they will have gluttony habits. When food is lacking, they will also show similar disability. Therefore, artificial breeding of salamanders should be observed, depending on the water temperature and the weather. In addition, the feeding status of the giant salamanders was regularly, quantitatively and balancedly fed to promote the healthy growth of salamanders.
Feeding time and frequency The juveniles are well-digested and absorbed at moderate temperatures. They are usually fed once for 2-3 days. If the temperature is below 10°C, they are fed once every 5-7 days. The giant salamander is nocturnal and feeds at night. Therefore, the summer feeding time is 8-10 o'clock in the afternoon and the winter can be 6-8 o'clock in the afternoon.
There are many factors affecting the feeding habits of the giant salamander, such as water temperature, dissolved oxygen, water quality, diseases, feed varieties, and feed quality. The amount of feed required by the baby dollfish can be calculated based on the number of adults in the pool and the daily feeding rate.
Water temperature is an important factor influencing the feeding of baby salamanders, because they are variable-temperature animals and change with the temperature of the water and the physiological metabolism of the body. In the optimum temperature range of the giant salamander, its feeding and growth are positively correlated with the increase of water temperature. In general, feeding above 12°C, the food intake is the highest at 18-23°C, and the growth is also the fastest. The water temperature rises above 26°C, and the food intake decreases. At 28°C or above, it enters the "summer sleep." At the appropriate temperature and the same feed quality conditions, dissolved oxygen and water quality play a major role.
Feeding methods Feeding should be based on the biological learning and ecological habits of the juvenile fish to determine a reasonable feeding method. In order to improve feed utilization and reduce feed costs, feeding must adhere to the "four-fixed" feeding method, namely, timing, positioning, qualitative, quantitative.
Feeding should be based on the characteristics of nocturnal creatures, such as the nighttime feeding of biological learning, feeding on time, but also according to the season, water temperature, water quality, appropriate advance or postponement. It is generally 10 o'clock in the evening and winter is 8 o'clock in the winter.
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