CATDOLL : CATDOLL: How to capture yellow eel seedlings from the wild?

1. How to capture eel seedlings from the wild?

1. Catch wild eel seedlings directly from the wild. From April to October every year, you can use eel cages to catch eels in rice fields and shallow ditches. Especially on hot and humid days or after thunderstorms, the eels that come out are the most active, and there are more at night than during the day. One person can bring 200 eel cages of eel seedlings at a time. Put them in the ditches in the fields at night or after thunderstorms, and you can catch eels a few hours later. When catching eels with eel cages, pay attention to two points: first, it is best to use earthworms as bait, and each cage can take eel seedlings 2-3 times a night; second, when the eel cage is placed in the water, the tail of the cage must be slightly exposed to the water surface so that the eel can breathe air in the cage, otherwise it will suffocate or suffer from hypoxia. At dawn, the eel cages are collected, and the large eel seedlings are sold, and the small ones are kept as eel seeds. The eel seedlings caught in this way are healthy and have a high survival rate.

Another method is to light a lamp at night, patrol along the ridges and ditches, and catch the eels that come out to feed with eel traps or by hand. When catching, try not to damage the eel's body as much as possible. The caught eel fry should be released immediately.

2. How can we raise yellow eel seedlings well? Can you tell me what are the precautions?

Large plankton such as cladocerans and copepods, earthworms, aquatic insects, midge larvae, etc. are all high-quality baits that eel fry like to eat, especially water silk earthworms, which are the best starter bait for eel fry. Feeding should be done at a fixed location, preferably on the shaded side of the pond. The main focus of daily management work for eel fry cultivation is the following aspects:

1. Control the water environment conditions

The cultivation of eel fry requires fresh, rich water with high dissolved oxygen. Change the water once every 6-7 days in spring and autumn, and once every 3-4 days in summer. The amount of water changed each time is 1/3-1/2 of the total amount of pond water. When changing the water, the principle of draining first and then filling should be adopted. The water change time should be arranged around dusk. The water depth is kept at about 10 cm and the water temperature is kept at 25-30℃.

2. Strengthen management

Patrol the pond more than three times a day, do a good job of preventing escape and disease, remove dirt and debris in the pond in time, and keep the breeding pond clean and hygienic. When the weather changes from sunny to rainy, or from rainy to sunny, or becomes hot and humid, the eel fry will easily stick their heads out of the water, so add new water in time to supplement oxygen. Do not feed rotten feed. When it is found that the individual differentiation is large, separate them in time.

3. Strengthen disease prevention and control

Check the eel fry regularly and disinfect the water regularly. If you find that the eel fry are not active or feeding normally, take appropriate measures to remove harmful organisms in the pond in time.

4. Feeding steps and methods

When the eel fry grows to more than 30 mm, the first separation begins. The method is: when the eel fry are feeding, the strong, competitive and active eel fry are scooped out with a dense mesh and moved to another breeding pond for breeding, and the density is reduced to 150 to 200 per square meter. At this time, the feed is mainly earthworms, maggots, a small amount of wheat bran, rice, fruits, vegetable scraps, etc.

When the eel fry reaches 50-55 mm in length, the second round of stocking is carried out. The method is the same as the first round of stocking, and the stocking density is reduced to 100-120 per square meter. The main bait at this stage is earthworms, maggots and other animal feeds, and some eel feed can also be fed.

Under careful feeding conditions, the eel fry can reach a length of 150-250 mm and a weight of 5-10 grams. At this time, they can be separated into ponds and transferred to adult eel ponds for wintering, or they can overwinter in the original ponds. Generally, when the water temperature drops to around 12℃, the eels stop eating and burrow into the mud to overwinter.

Choose suitable varieties for breeding, pay attention to the specific conditions of the water, pay attention to the temperature, be sure to disinfect on time, and pay attention to the pH value.

Be sure to make sure the water quality is good enough, change it with fresh water in time, and remove impurities in time. Choose a better variety.

Pay attention to the water quality, choose a place with a relatively suitable temperature for breeding, also pay attention to the dissolved oxygen content, and use some high-protein feed appropriately.

3. Eel farming

The eel is a tropical and warm temperate fish that often lives at the bottom of the water. It has strong adaptability and is less active during the day. It often burrows in the mud or lives in the crevices of rocks, and comes out of the burrow at night to look for food. The eel is an omnivorous species that feeds on various small animals. It feeds most vigorously in the summer, and can go without food for a long time in the cold season without dying. After understanding the habits of the eel above, let's share how to raise it in a pond cage:

Tools/raw materials: The feed mainly consists of small fish, earthworms, snails, clam meat, etc., with earthworms being the best. You can also feed water fleas, bean dregs, rapeseed cakes, fruits and other artificial compound feeds.

Choose a pond with good water quality, no pollution sources, and little external interference. Use bamboo to build a support in the pond and fix the four corners of the net cage on the support. Set up a feeding table in each net cage. Because eels have the habit of cannibalism, the stocking specifications are basically the same, generally 20 to 50 grams per tail. The stocking time of eels should be selected in April, May, or August to September to avoid the sexual maturity and reproduction period of eels from mid-May to July. The most suitable temperature for the growth of eels is 24 to 28 degrees Celsius. Feeding should be scheduled. Eels hide during the day and come out at night. It is best to feed them at 6 to 8 pm. The feed should be fresh and should not be spoiled by mold. The feed should be washed before feeding, and then soaked with 3 to 5 grams of salt for 10 to 20 minutes per cubic meter of water, and then rinsed with clean water before feeding. Generally, small freshwater fish are selected, and the daily feeding amount is 3% to 5% of the total weight of the eels in the cage. When artificially reared, due to the large amount of feed, the feces discharged by the eels are easy to pollute the water quality, so new water should be added frequently to keep the water fresh. Change the water every 7 to 10 days in spring and every 3 to 5 days in summer. The cages should also be disinfected regularly, using 10 grams of bleaching powder water per cubic meter of water and spraying the entire pond. After stocking, an appropriate amount of loach can be stocked in the cages. The habit of loach swimming up and down can be used to divert and increase oxygen, and it can also eliminate the residual bait of the eels. A certain amount of silver carp is stocked in the pond to adjust the water quality.

Clean the cages in time, remove excess debris and attached algae, and keep the water exchange inside and outside the cages unobstructed. Place water plants, preferably water hyacinth and water peanuts, in the cages to provide a good place for the growth and habitat of the eels. When transplanting water peanuts, it is best to remove the roots, wash them, and soak them in 5% salt water for about 10 minutes to prevent pests such as leeches from being brought into the cages with the grass. The eel seedlings must be strictly disinfected before entering the cages, especially in July to September when the eels are prone to disease. Sprinkle the entire cage with 1ppm bleach every 20 days, and isolate sick eels in time. When diseases are found, prescribe the right medicine in time to minimize losses. Fishing: In December every year, when the water temperature drops below 12 degrees, the eels' feeding and growth basically stop. At this time, the eels in the cages are captured and put on the market. Eels are extremely sensitive to temperature and will stop eating below 10 degrees and above 30 degrees. During storage or transportation, if the density is high, the water volume is small and the weather is hot, the eel will secrete mucus faster, releasing heat and consuming oxygen in the water, causing the water temperature to rise. If the mucus is not removed in time, the eel will not be able to bear it, and it will not take long for the eel to develop symptoms such as red gills, red anus, and congestion throughout the body, and eventually suffocate to death.

Eel has high nutritional value. According to American experimental research data, regular intake of lecithin can improve memory by 20%. Therefore, eating eel meat has the effect of nourishing the brain and strengthening the body. The special substance "eel element" it contains has the effects of clearing away heat and detoxification, cooling blood and relieving pain, dispelling wind and swelling, moistening the intestines and stopping bleeding, and strengthening the spleen. It can lower blood sugar and regulate blood sugar, and has a good therapeutic effect on hemorrhoids and diabetes. In addition, it contains very little fat, so it is an ideal food for diabetic patients. The amount of vitamin A contained in eel is surprisingly high. Vitamin A can improve vision and promote the metabolism of the skin membrane. Every 100 grams of eel meat contains 17.2~18.8 grams of protein, 0.9~1.2 grams of fat, 38 mg of calcium, 150 mg of phosphorus, and 1.6 mg of iron; in addition, it also contains thiamine (vitamin B1), riboflavin (B2), niacin (vitamin PP), ascorbic acid (vitamin C) and other vitamins. Yellow eel is not only used as a famous dish to entertain guests, but also can be exported alive and sold abroad. Frozen eels are even exported to America and other places. Yellow eel is produced all year round, but the best is before and after the Lesser Heat. There is a saying among the people that "Yellow eel in Lesser Heat is better than ginseng". Eel is rich in DHA and lecithin, which are the main components of the cell membranes of various organs and tissues in the human body, and are indispensable nutrients for brain cells. Eel contains "eel element" that lowers and regulates blood sugar, and contains very little fat, which is an ideal food for diabetic patients. Eel is rich in vitamin A, which can improve vision and promote skin membrane metabolism. Yellow eel contains more vitamin A, which can improve vision, prevent and treat night blindness and vision loss, and prevent and treat diabetic patients with eye diseases. At the same time, vitamin A can also resist respiratory infections, promote development and strengthen bones. At the same time, eels are rich in DHA and lecithin, which have brain-enhancing effects. Lecithin can also promote the activation and regeneration of liver cells and enhance liver function, thereby effectively reducing the incidence of diseases such as fatty liver.