The aphrodisiac is commonly known as Alice, Taihu Whitefish, etc. It is rich in nutrition and can be used as medicine. The market demand is increasing day by day. In order to effectively protect and rationally develop this rare species, in recent years, we have conducted studies on seedling breeding and commercial fish breeding of Aphrodisiac, and have accumulated certain experience. Now we introduce the breeding techniques of adult fish as follows. Farmers reference.
I. Analysis of breeding patterns and benefits
1. The pond is raised. The pond area of ​​2 to 10 mu and the water depth of 1.2 to 2.5 meters are appropriate. It is required that the bottom of the pond is flat and the drainage and drainage are convenient. Before the fish species are stocked, remove too much silt, disinfect, expose the pond and improve the sediment quality, then inject water and fertilize the water. Each pond is equipped with 1 to 3 sets of 1.5 to 3 kilowatts of aerators, and 2 to 4 feed tables are constructed using bamboo curtains and other materials in the pool. Acre ocellatus red fish species 800 to 1200 tails, requiring uniform size, robust physique, strong activity, no injury disease-free, another release tail 100 gram of squid 100 tail and squid weight 50 grams of squid about 20 . This model generally produces 500 kilograms of commercial fish per mu, with a net profit of 5,000 yuan per mu.
2. Crab pool set. This is a good model for the cultivation of the red hibiscus, and it is designed based on the difference in the habitat habit between river crabs and Crimson, which can improve the utilization rate of water and remove the wild fish in the crab pond. It is suitable for mainly crab cultivation. Farming large-scale water surface. Crab ponds require fencing facilities, conditional micropore oxygen aeration equipment, stocking 100 to 160 birds per acre, 500 to 800 crabs, and laying 30 to 50 tails of 15 cm or more. . This model generally yields 40 kilograms per mu of crabs, 30 to 50 kilograms of adult fish, and 2,000 yuan per mu.
3. The pro-fish pond is raised. In the case of full use of effective water and without affecting the growth of broodstock, the appropriate breeding of Aphrodisiac can both eliminate small fish and increase economic income. Cockroaches usually take place after the artificial breeding of the four major species of fish. Each species of mussel raises 40 to 50 tails of red fish, and 20 to 30 kg of commercial fishes per mu. For example, the relatives of squid or squid In fish ponds, the number of jackpots per mu can also increase. After the broodstock-based pond is set up, it will be possible to put 1,000 species of bluefish and summer fish per acre from the end of June to the beginning of July. This will not only provide fresh live bait for Euphorbia, but will survive as a large-scale herring species. This model can increase the efficiency of 500 to 1,000 yuan per mu of broodstock.
Second, feeding and management measures
1. Feed the bait. Aphrodisiac should be fed live bait fish, chilled fish or artificial diets containing 35% to 40% crude protein. The body length of the bait should be 1/5 to 1/3 of the length of the red body, usually 1 to 5 days, and the chilled fish or compound feed should be fed 2 times a day. 2% to 5% of the weight, pay attention to chilled fish and formula feed can not be used at the same time. The feed must be fed at a fixed rate. It is advisable to feed it within one hour for each feeding.
2. Water quality regulation. Aphrodisiac is not tolerant to hypoxia. During the whole breeding process, new water should be constantly added to keep the water in the pool fresh. The water transparency is controlled at about 30 cm and the pH is between 7 and 8. Photosynthesis bacteria and other micro-organisms can be used to regulate water quality, and oxygen can be turned on at an appropriate time to improve the water environment. During the high-temperature season from August to September, especially the main pond, it is necessary to change the water once a week, changing the amount of water to about 20% of the pool water.
3 patrol pond management. Observe daily fish movements, water quality changes, and weather conditions. Regularly check the growth of fish, especially weather that is prone to floating heads, such as rainy, sweltering, etc. Always observe the ponds thoroughly, observe them more, and find that when there are flood warnings, take oxygenation in time. Measures. Usually we need to remove residual bait, dead fish, dirt, etc.
4. Fish disease prevention and control. The fish species was selected to be released on a sunny day, and fish species were soaked with 2% saline for 10 to 15 minutes during stocking. In the spring, if parasites such as trichomonads or ringworms occur, 0.5 mg/L copper sulfate can be used for prevention and control. Bacterial fish disease can be prevented starting in April. Disinfected once every two weeks with dibromohydantoin 0.1 mg/l or 0.2 mg/l bromochloroacehynazine, treatment with dibromohydantoin 0.3 mg /litre or bromochloroheine 0.45 mg/l Quanchiposa, reused once every other day.
Third, pay attention to matters
1. Build a feed station. The aphrodisiac ingests food in the upper and middle layers of the body of water, and generally does not eat the feed at the bottom. Therefore, a 3-meter-three-meter food table can be set in the pool at a depth of 60 to 70 cm from the water surface to prevent waste from being caused by feed sinking and damaging the water quality.
2. Use medication with caution. Aphrodisiac is very sensitive to certain drugs (such as trichlorfon, trichloroisocyanuric acid, quicklime, etc.), especially in the mouths of mixed ponds. Care must be taken when using drugs.
3. Fishing and transportation. Aurora is eager to jump and is good at jumping. When fishing, use bamboo rafts to lift the net and make the net more than 1.4 meters above the water surface. Otherwise the fish will jump off the net. When seedlings are transported, they must carry water, and water should not be mixed with aquatic organisms, especially aquatic animals. During the transportation process, it is necessary to avoid strong vibrations and bumps, and to prevent the water temperature from changing too quickly.
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