1. Select the appropriate stocking of aquatic animals cement pond eel farming, more diseases, the technical requirements are very strict. Therefore, before breeding, should do a good job of improving the environment and the use of aquatic plants and animals to prevent disease and other work. Specific practices are as follows: (1) in the eel pool in the center of the cut water peanuts, polygonum and other aquatic plants, cut the area of 2/3 of the pool, the period of the remaining 1/3 of the area around, put the purple back of the ping pong; (2) every 10 meters 2 area, put 2 ~ 4 age of the tortoise 1, loach 9, juvenile lobster (crayfish fry) 12.
2. Grasp the stocking density of cement pond eel farming is a high high density intensive pool, per square meter can be put into the specification of about 40 grams of eel seedling 2 ~ 2.5 kg; 60 grams of eel seedling 2.5 ~ 3 kg. Eels of different sizes should be fed in separate pools. For individual weight more than 75 grams of eels, should not be fed.
3. Strengthening management is the key to reducing morbidity and increasing production in cement pond eel farming. Generally speaking, good management of cement eel ponds, can be a steady growth of 2 to 3 times; poor management of cement eel ponds, almost no growth, or only 1 ~ 0.5 times. There are six points in the management of cement ponds:
(1) Water management cement eel ponds should be filled with about 20 centimeters of water, when the summer heat, the water level can be raised to 30 centimeters. When the weather is cooler, change the water once in 3~5 days; when the weather is hotter, change the water once in 1~2 days. In order to keep the pool water fresh and tender, you can utilize the vigorous metabolism of purple-backed pimpernel to purify the water quality. Both every two days the pool around 1/3 part of the stocking of purple back pimples, with a part of the complex salvage, so that it is not sparse exuberant growth, to achieve the absorption of fertilizer in the water column, to maintain the purpose of the water quality is clean.
(2) shade measures every summer, temperatures up to 25 ℃ or more, due to the cement wall around the heat absorption and heat release, resulting in eel pool water temperature in the natural water temperature at the same time rise, it is necessary to take measures to prevent summer cooling. Shade of a variety of methods, can be cultivated in the eel pool on one side of the loofah, racking loofah vines to climb to the pool above the shade; can also be used bamboo curtains racking shade. Regardless of the method of shade, are required to do half shade, not a cover. Once the day is cool, it is necessary to lift the shade facilities, increase the sunshine of the eel pool.
(3) anti-fleeing work at the end of June to early July every year, frequent rainstorms, eel pool water level fierce Zhang, this time should be timely drainage. In the night of heavy rain, eels like to pile up a corner, cooperate with each other to escape. At this time should do a good job of night inspection, and in the pool on the corners of the flat on a wider wooden plate just in case.
(4) feeding management in general, the eel daily intake of 6% to 8% of body weight. To eel growth fast, in addition to the day to make eels full, but also must do a good job ~ ~ ~ ~ eat non-animal food, so that its animal food and animal feed feeding alternately, in order to increase the comprehensiveness of eel nutrition. Some eels like to eat food, such as earthworms, small fish and shrimp, etc., a feeding can not be too much, otherwise the eel will die of gluttony and bloating.
(5) clear residual work cement eel pond, there will often be leftover residual food, this is because of the wind, rain, mechanical vibration and some dead eel odor caused by the impact of eel odor, you should remove the residual food and dead eel odor in a timely manner, and according to the dead eel to determine the disease, according to the residual food to determine the amount of food.
(6) regular disinfection and pest control, cement eel ponds should be especially good regular disinfection and regular pest control. Every 15 days should be 25 mg / kg of quicklime or 1 mg / kg of bleaching powder disinfection of the whole pool; monthly need to use 0.7 mg / kg of 90% of the crystal trichlorfon to exterminate insects once. In addition, often feeding earthworms and mussels eel pool, monthly also apply albendazole 2 grams, mix 4 kg of food, feeding 50 kg of eels twice.
4. Disease control cement eel pond is the most susceptible to disease in all eel ponds a pool. In the prevention and control of disease, we should adhere to the principle of prevention and control. Cement eel ponds are small in size and easy to manage. Therefore, any disease is easily detected. Once the disease is found, it should be treated in time. The best way to cure the disease is to use "Chinese", "Western" and "chemical" methods.
Cement pools are most prone to eel temperature difference, rotten skin and coma. Regardless of the kind of disease, should refer to the latter disease prevention and treatment program in time for treatment.
5. Wintering management cement pond eel farming, generally using waterless wintering method. Both in early November, when the temperature drops to below 8 ~ 10 ℃, slowly drain the pool, so that eels into the hibernation; when the temperature drops below 5 ℃, to cover the pool with a layer of fresh straw about 5 ~ 10 cm thick, so that eels can safely overwinter. During the freezing period, do not let the bottom of the pool have stained water to prevent the eel try to suffocate and die when freezing. Eel farming is risky, the rich and powerful, please gentleman measured and after the line, I wish your career a smooth sailing, all the best!