There are farmers to inquire, the family has a water surface of about 2 acres of Qingshui Shantang, now want to breed yellow eel. Due to the fact that there have been no cercariae in the past, it is not known how difficult it is to bred, nor does it know what to do. And how much is its upfront cost investment? The risk is not big? Where are the good varieties available?
After consulting experts and finding technical information, Huanghua has strong environmental adaptability. Some abandoned water bodies that are not suitable for breeding other fish, and puddles and ponds that are not suitable for planting crops can be used as Huangchao Lake. Therefore, artificial breeding of jaundice is not difficult. Under the premise of doing a good job of disease prevention and anti-escape measures, the risk of breeding is not too great.
For the Shantang, we must first ensure that there is no water leakage and prevent jaundice from escaping. We must also repair the water inlet, drain outlet, and overflow outlet to change the water and drain water. Each water outlet must also be equipped with a barrage to prevent the carp from escaping when the water in the pool is rising. In order to facilitate the growth of Astragalus, it is also possible to artificially imitate the natural environment for the inhabitation of the yellow toad, such as putting stones, roots, etc., in the pond, and also to plant aquatic plants such as water lilies and arrowheads in the pond to improve water quality.
The seedlings selected for stocking must be free from injury, health, and smooth surface. The body color should be golden and pale yellow, and the color is too deep to grow quickly. Usually about 30 tails per kilogram of seedlings are selected. Stocking seedlings must be of the same size and size. Stocking density of 25 lbs. per square metre is recommended for raising about 100 tails (1 mus of water is about 66,700 tails). Before the seedlings enter the pond, they must be sterilized with 3% saline, which is a relatively simple method. In addition, the early spring stocking seedlings has a good effect, which is conducive to early start of food and extend the growth period.
Astragalus membranaceus is a omnivorous fish dominated by carnivorous foods, and has a wide range of sources of feed, such as small fish, prawns, quail, animal viscera and waste, alfalfa, silkworm cocoons, snail meat, rice, melon, vegetable crumbs, and so on. The amount of bait to be fed daily is about 6% of the weight of Astragalus, and it is advisable to have a little surplus after feeding, and to clean up the remaining food in time. Normally, it is fed twice a day. At 9 o'clock in the morning, one-third of the amount of eclipse is given, and at 6 o'clock in the evening, two-thirds of the amount of eclipse is added. When feeding is not possible, it will be stopped when it is time to invest, otherwise it will affect the growth of Astragalus.
It is necessary to adjust the water quality of the fish ponds and do the heat prevention and wintering work for the yellow peony. The water depth in the Huangshui Lake is suitable between 15-25 cm, and deeper water can be added in the hot season. When the weather suddenly changes (when it turns sunny or rain turns sunny) and the weather is hot, it is necessary to inject new water in time to prevent the yellow locust from losing oxygen. The suitable temperature for the growth of Astragalus is between 15°C and 28°C. In the summer, some shady crops can be planted around the Huangqian Lake, and the pool water can be changed frequently, and well water or spring water can be injected in time (water temperature cannot be too different). When water temperature is below 10°C, jaundice is dormant. Therefore, when the temperature drops to about 15°C, it should be fed with high-quality bait. When Huangpi is wintering, it is necessary to keep the pond mud moist and warm to prevent frostbite and freezing. In addition, we must pay attention to the prevention of rats and other hazards.
According to the actual situation, it is also possible to consider group breeding of cages. Putting 20 to 30 grams of tail weight is best for the seedlings that are to be placed, and put them at a time, putting 3-5 kilograms per square meter. The current price of seedlings on the market is about 24 yuan per kilogram, and it is also possible to purchase wild seedlings themselves.
In natural waters, jaundice usually does not occur.
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