Problems during the cultivation of Monopterus Albus

1. Blind greed for large scale under the stimulation of high profits in Monopterus Albus culture, many farmers spare no effort to expand the scale of Monopterus Albus culture in order to obtain higher benefits in a short period of time, such as how many cement ponds have been built and how many cages have been made. Because of the large scale of breeding, in order to obtain the corresponding number of seedlings and feed, the introduction of rice field eel seedlings and the source of animal feed of rice field eel are not strictly guarded, and the result is usually that the quality of the seedlings purchased is different and the specifications vary. For animal feed can not be strictly checked because of a serious shortage, the final result is that the survival rate of eel species after release is low, the survival of eel species is not guaranteed because of feed supply, poor feed quality, eel disease often occurs. Blindly expand the scale of breeding, greedy for perfection, do not fully consider all aspects of the breeding process of rice field eel, busy for a year, not to mention making money, less loss is the best result.

2. At present, the technology of large-scale propagation of rice field eel seedlings has not made a substantial breakthrough, and the rice field eel seedlings purchased by breeders are basically from the wild. Among the goods sold on the market, there are farmed eels, caged eels, electric eels and medicine eels. The species that can be cultured as eels are often caught in cages, electric traps and drug traps. How to distinguish and select eel species is not only the key to the survival rate of Monopterus Albus culture, but also the key to the success of culture. The fishing method is the key to determine whether the eel species are suitable for breeding. The seedlings of rice field eel caught by hook fishing are easy to be identified and eliminated because of mouth injury, but the rice field eel caught by medicine and electricity are not easy to distinguish with the naked eye in a short time, and most of them begin to die within 10 days after going down the pond. If the ricefield eel caught by net or cage stays in the cage for too long, the mortality rate after entering the pond is also quite high. During the temporary rearing period of the trappers, if the Monopterus Albus caught by nets and cages have fever and acidosis due to close culture, deterioration of water quality and so on, they often show symptoms similar to other diseases after entering the pond, and treatment is often useless. In addition, a large number of eel seedlings are captured during the high temperature season, and a large number of rice field eels will die if they are temporarily reared and transported improperly.

3. Domestication of Monopterus Albus has not been done thoroughly. In the wild environment, the feeding habits of Monopterus Albus are day and night, partial to carnivore, and like to eat natural fresh bait. In artificial culture of ricefield eel, if the feeding habits of ricefield eel can not be changed, it will have a great negative effect on the effect of culture and the utilization rate of artificial feed. Through domestication, one is to solve the problem that Monopterus Albus is partial to live bait. Monopterus Albus is a carnivore. If fed with a single animal feed, Monopterus Albus will become anorexic to other fodder. If we do a good job of taming and feeding Monopterus Albus at the initial stage of feeding, we can feed Monopterus Albus with artificial formula feed with wide source, low price and high meat gain rate in the future. It is also good for disease prevention and treatment and feeding bait in the future. The second is to adjust the feeding time of ricefield eel, wild ricefield eel mostly go out to look for food at night, through domestication, gradually adjust the feeding time to make ricefield eel feed during the day. It usually takes about 40 days for Monopterus Albus to be domesticated. In the middle of domestication, some breeders stop domesticating when they see Monopterus Albus ingesting artificial formula feed during the day, but only some of them have a conditioned reflex to the domestication work. Many Monopterus Albus are still in the feed conversion period, and the domestication work has not been done completely. To do a good job of taming and feeding Monopterus Albus is of great significance to prevent and cure diseases and feed bait in the future breeding process. The best condition of domestication work is that Monopterus Albus can eat artificial pellet feed during the day and produce feeding conditioned reflex to the feeding personnel.

4. Feed feeding is unscientific. Most breeders are mainly fed with live bait such as earthworms and small miscellaneous fish, and few are fed with full-price artificial compound feed. The ricefield eel fed with live bait such as small mixed fish is often fed with poor nutrition, slow growth and high feed coefficient, coupled with the lack of continuity in live feed production, the phenomenon of killing each other is more serious, enteritis and bacterial tail rot disease occur from time to time. Even among the breeders who were fed with compound feed, the feeding was arbitrary, the principles of "four determinations" and "four looks" were not followed, and the daily feeding amount was not flexibly controlled according to the changes of season, water temperature and weather. The final result of random feeding is that the feed utilization rate of Monopterus Albus decreases and the feed coefficient increases; when Monopterus Albus is full and hungry, it induces bacterial enteritis; when Monopterus Albus chases and bites each other, bacterial tail rot occurs all the year round; the cultivated Monopterus Albus varies in size, size and yield.

5. Artificial cultivated ricefield eel does not pay attention to water quality regulation, and does not pay attention to the result of water quality regulation. Eel disease often occurs. The utilization rate of food of Monopterus Albus decreased, the growth of Monopterus Albus was slow, and the culture benefit was low. To adjust the water quality, first, it is necessary to add new water regularly to keep the pool water fat, alive, tender, cool and sufficient dissolved oxygen. The second is to sprinkle the whole pool with quicklime on a regular basis to regulate the water quality and kill the pathogenic bacteria in the pool. Third, the whole pond is regularly sprinkled with photosynthetic bacteria and other microbial preparations to improve the microbial structure and water quality in the pond. The regulation of aquaculture water level. When adding new water, many farmers are easy to ignore the regulation and control of the water level and temperature of the pool. If the water level in the pool is too shallow, it is easy to cause a large temperature difference between day and night; if the water level is too deep, Monopterus Albus often leave the cave to the surface to breathe air, affecting the growth of Monopterus Albus; the temperature difference between the added new water and the water in the culture pond is too large, it will cause Monopterus Albus cold disease.

6. the prevention and control of diseases and insect pests of Monopterus Albus should give priority to prevention. Once the disease occurs, it is more difficult to treat. The key point of prevention is to strengthen daily management and adhere to the feeding principle of "four determinations" and "four looks". Reduce the chance of injury and infection of Monopterus Albus. The main measures to prevent the diseases of Monopterus Albus are as follows: disinfecting the fish before planting eel into the pond, controlling the stocking density of Monopterus Albus, keeping the proper depth of pond water, regularly adding new water, regularly sprinkling quicklime in the whole pond, feeding bait regularly, and so on. In the early stage of the disease of Monopterus Albus, shallow water treatment should be carried out, and under the condition that Monopterus Albus can still be fed in the early stage of the disease, the bait should be given in time for treatment. In the early stage of the disease, we should also pay attention not to carry out large drainage and large irrigation of the pool water, so as to avoid the stress reaction caused by the sharp change of the water level, aggravate the disease and affect the effect of drug treatment. Monopterus Albus is a special species of fish, which can survive out of water for a long time and will not die without feeding for a long time, giving people the impression that it has strong vitality, so many breeders have neglected the prevention of diseases and insect pests of Monopterus Albus. In fact, Monopterus Albus is very fragile and easy to be harmed. Changes in the environment, lack of nutrition, injury, and the invasion of pathogens will cause the disease of Monopterus Albus, affect the growth and survival rate of Monopterus Albus, and ultimately affect the efficiency of culture.