Mixed Culture technique of Monopterus Albus Loach

Whether it is pond culture or cage culture, the following mixed culture model can be adopted to increase income.

First, set up a culture pond for raising ricefield eel and Loach:

To choose places where the wind is sunny, the environment is quiet and the water source is convenient, either cement ponds or soil ponds can be used, or cages can be raised in reservoirs, Weir ponds, small ditches and rivers, with an area of 25,150 square meters. If Monopterus Albus and Loach are raised in cement ponds, alkali removal must be carried out before releasing seedlings; if cultivated in soil ponds, the soil should be hard and the bottom of the pond should be compacted. The depth of the pond is 0.8 to 1.5 meters. No matter it is the cement pool or the soil pond, it is necessary to fill a 30 cm layer of fat mud at the bottom of the pool. It is best to contain more organic fat mud, which is beneficial to Monopterus Albus and Loach to dig caves. When building the pool, the inlet and outlet should also be set, and the water depth should be kept at 15-20 cm. The inlet and outlet should be tied up with a fish net to prevent Monopterus Albus and Loach from escaping.

The culture pond was thoroughly disinfected with quicklime about 10 days before seedling release, and drained 4 days before seedling release, and then injected with new water.

The polyethylene mesh with dense mesh is selected to make the cage. The mesh size is based on the principle that eels and loaches do not run and are conducive to the exchange of water bodies inside and outside the cage. The area of each case is not more than 20 square meters. the specifications are generally 5 meters ~ 7 meters long, 2 meters ~ 3 meters wide and 1.5 meters ~ 2 meters high. The cage is fixed with a bamboo pole along the edge of the pond, the mouth of the box is 0.5 to 0.6 meters above the water surface, the distance between the boxes is 1.5 meters, and the total area of the cage does not exceed 10% of the area of the pond. 7 ~ 10 days before stocking, soak the new cage in water and attach a layer of algae biofilm to the surface of the net coat so as not to scratch the eel. Put the soil after exposure or disinfection into the cage, about 0.2 meters thick, so that eel and Loach can sneak into the soil in winter. Transplanting water peanuts in the box, the coverage accounts for 70% to 80% of the cage area.

Second, select the seedlings of Monopterus Albus and Misgurnus anguillicaudatus and raise them reasonably:

Seedling is the key to the success of raising ricefield eel and Loach. The seedlings of Monopterus Albus had better be domesticated by artificial cultivation of dark yellow large spotted eel or golden small spotted eel, not mixed color eel seedlings and undomesticated eel seedlings. The suitable seedling size of Monopterus Albus is 50-80 per kilogram, which is too small for poor feeding and low survival rate. The stocking density is generally 1-1.5kg per square meter of eel seedlings, and then release Loach seedlings according to the proportion of 1:10 after 20 days. Loach had better be artificially cultivated with a high survival rate.

Before stocking eel and loach seedlings in the pond, the seedlings are released according to the requirements of conventional culture. Eel and Loach seedlings can be released from April to November. The size of eel species is about 20 grams per tail. The specifications of rice field eels in the same cage are as neat as possible to avoid eating each other. As early as possible stocking, in order to improve the specification of the box. Each square meter net cage stocking specification is 25 grams of rice field eel 2 kg, Loach 0.5 kg, or 50 grams of rice field eel 3 kg 4 kg, Loach 1 kg. Water peanuts and water bodies were disinfected with bleach solution 5 days before restocking. Eel and Misgurnus anguillicaudatus seedlings can be soaked in methylene blue solution of 10ppm for 10 minutes or bathing with 20ppm potassium permanganate solution for 5 minutes for 10 minutes, or 3%-4% saline solution for 5 minutes.

(3) feeding compound feed:

First install the feed table, either with wood or plastic board, the area is self-determined according to the size of the pool, 5 inches below the surface of the water. Do not feed Monopterus Albus seedlings for the first 3 days, let Monopterus Albus adapt to the environment, and feed from the fourth day. The best feed was given at about 7 o'clock in the afternoon, when the feed intake of Monopterus Albus was the highest. The artificial feeding of ricefield eel is mainly compound feed, and some fresh feed such as small fish, shrimp, earthworms, fly maggots, river snails, yellow powder insects, silkworm pupa, pig blood and animal viscera are fed properly. Artificially domesticated ricefield eel, formula feed and earthworms are its favorite feed. The artificially cultivated seedlings of Monopterus Albus were fed with compound feed, the daily feeding amount was 3% to 5% of the body weight of Monopterus Albus, and once or twice a day (depending on the weather and water temperature). The seedlings of Monopterus Albus raised 20 g can grow to 200 g and 300 g a year. Misgurnus anguillicaudatus mainly feed on the feces of Monopterus Albus and the feed of Monopterus Albus in the pond, and part of the problem can also be solved by enriching the water quality. Loach reproduces quickly naturally, and the proportion of Loach in the pond is greater than 1: 10:00, so you can feed wheat bran once a day. The amount of feed should be less at first, and then increase gradually.

In artificial culture of ricefield eel, it is best to put a certain proportion of Loach after domestication, so as to achieve mutually beneficial symbiosis between Monopterus Albus and Loach and create good economic benefits. Because Misgurnus anguillicaudatus and Monopterus Albus have different eating habits and different ability to accept formula feed. Misgurnus anguillicaudatus hardly needs to be domesticated, while Monopterus Albus needs a period of forced domestication to adapt. When domesticating, the Loach has swept away the Monopterus Albus before it opens its mouth to feed, thus affecting the domestication time of Monopterus Albus and even causing the domestication to fail. Misgurnus anguillicaudatus is active and swims up and down when feeding, which makes the water fluctuate greatly, so that part of the feed is lost into the water, pollutes the water quality, affects the utilization rate of formula feed, and prolongs the time of domestication.

IV. Feeding and management

The growing season of Monopterus Albus and Misgurnus anguillicaudatus is from April to November, and the peak season is from May to September. During this period, the management should be "diligent" and "fine", that is, patrol the pool frequently, manage diligently, and solve problems in time. Adhere to the morning and evening inspection of the box, anti-escape, anti-rodent, anti-theft, flood control, timely removal of overgrown water peanuts in the box to prevent it from growing out of the box resulting in the escape of eel and Loach. After November, if there is no soil layer in the box, the water peanut can be thickened to 0.3 meters, and then sunk with heavy weight, allowing eel and Loach to lurk through the winter. Carefully observe the growth status of Monopterus Albus and Misgurnus anguillicaudatus in the pond in order to take corresponding measures in time. The habit of Monopterus Albus and Loach is to go out at night. Keep the water quality fresh, the PH value is between 6.5 and 7.5, and the water level is suitable.

5. Prevention is the main cause of eel disease.

Always sprinkle 1-2ppm bleach throughout the pool and regularly use cupric sulfate to prevent diseases. Because once the ricefield eel is sick, the therapeutic effect is relatively poor, so prevention is more important than treatment.

Analysis on the advantages and disadvantages of mixed Culture of Monopterus Albus and Loach

Artificial culture of eel, whether pond culture or cage culture, when raising eel seedlings, with a certain proportion of Loach is very beneficial, this is because:

1. Monopterus Albus and Misgurnus anguillicaudatus have different feeding habits, they can make full use of different bait resources in the water area, and the mixed Misgurnus anguillicaudatus can also eat the remaining bait of Monopterus Albus, reduce the loss and waste of feed, and prevent the deterioration of water quality. it can also harvest a certain amount of Loach and increase economic income.

2. Loach is more active than Monopterus Albus and often jumps up and down. Its active habits can prevent Monopterus Albus from entangling each other caused by excessive density, thus maintaining the normal mucus on the body surface of Monopterus Albus and reducing the occurrence of eel disease; moreover, the fluctuation of Loach increases the dissolved oxygen in the water and creates a good living environment for Monopterus Albus.

However, at present, most of the artificial raising eel uses compound feed, so it needs to be domesticated, and it is disadvantageous to cultivate Loach in domestication.

The main results are as follows: 1. Because the eating habits of Loach and Monopterus Albus are different, the ability to accept formula feed is different. Misgurnus anguillicaudatus hardly needs to be domesticated, while Monopterus Albus needs a period of forced domestication to adapt. When domesticating, the Loach has swept away the Monopterus Albus before it opens its mouth to feed, thus affecting the domestication time of Monopterus Albus and even causing the domestication to fail.

2. Misgurnus anguillicaudatus is active and swims up and down when feeding, which makes the water fluctuate greatly, so that part of the feed is lost into the water, pollutes the water quality, affects the utilization rate of formula feed, and prolongs the time of domestication. Therefore, when artificial breeding rice field eel, it is best to put a certain proportion of Loach after domestication, so as to achieve mutually beneficial symbiosis of rice field eel and Loach and create good economic benefits.

Benefits of mixed culture of Monopterus Albus and Loach

1. The bait can be fully utilized. Monopterus Albus is partial to animal bait, while Loach is omnivorous fish. when it is young, it takes small crustaceans, water earthworms and aquatic insects as food. when it is an adult, it is mainly plant-based bait, and sometimes it also eats humus at the bottom of the pond. Mixed culture with Monopterus Albus does not take another bait, but it can eat the remaining bait of Monopterus Albus, which can not only make full use of the bait, but also play a role in preventing water quality from deteriorating.

2. Improve the living environment and prevent fish diseases. Loach is good at channeling upstream and downstream, loosening the soil, which is beneficial to the reproduction and growth of aquatic organisms in the sediment, adding bait for Monopterus Albus, which is beneficial to the growth of Monopterus Albus. Misgurnus anguillicaudatus is very active and can dissolve the supersaturated oxygen in the upper layer of the field into the lower water, creating a good living environment for ricefield eel.

3. Avoid entangling and fighting among ricefield eels. Raising ricefield eel with Loach can also prevent ricefield eel from entangling and fighting with each other, which not only prevents ricefield eel injury, but also reduces the occurrence of disease.