Aphrodisiac and its efficient breeding techniques
Wild Aphrodisiac is a fierce carnivorous fish that is a staple food of live fish. It is mainly eaten by plankton and aquatic insects at seedling stage, while it devours small shrimps and shrimps and eats a small amount of young plants. Artificially propagated fry, the whole process can be fed artificial feed, such as soy milk, yellow powder, dip material, silkworm cocoon powder, peanut bran, soybean cake or surimi, fish paste, fish and so on. More than 3-4 cm can be fed whole artificial feed, preferably floating materials and aquatic plants, such as Qing Ping, Hongping, tender grass, and other dishes. Of course, after re-domesticating, live fish can be eaten again. Compared with the feeding of live fish, the growth rate of high-quality artificial feed was not much different.
The aphrodisiac redhead grows quickly and is crudely bred and has a large body size. The largest individual is more than 15 kilograms, and common wild individuals are 1-10 kilograms. Artificially cultivated fry, the first anniversary of 0.6-1 kg, two years up to 2-3 kg. The development of aquaculture and red breeding has significant benefits.
First, pond conditions. Aquaculture ponds should be well-lighted, ventilated, surrounded by no shelter, convenient drainage and drainage, and the soil quality should be black loam, pH 7-8, with an area of ​​more than 2001 square meters (3 mu), flat and flat at the bottom of the pond. Sludge, pond sturdy, no water leakage, pond depth not less than 2.5 meters.
Second, fish species selection. Breeding Aphrodisiac Red broilers should be stocked with large-sized, high-quality larvae, with a size of 10-13 cm/tail (60-70 tails/500 g) or 9-10 cm/tail (80-90 tails/500 g). Each mu can be put in 1000, due to red mouth, like to eat floating food, each mu can be set 100-200 tail (50-100 tail / 500 g), 150-300 tail fish (10 tail / 500 g ). Pairing with fingerlings can play a role in clearing the food field, ingesting precipitated foods, and regulating and improving water quality.
The fry is best to be released every winter, and no later than the end of March. Before the seedlings are released, the temperature will be lower, which will increase the survival rate of the fish. The biggest weakness of Alice's mouth is that the scales are relatively soft, and a slight carelessness during operation can easily cause the scales to fall loose and cause death.
Third, feeding technology. Scientific and rational feeding is the main part of capturing the breeding aphrodisiac. After the fish species enter the pond, there is an adaptation process for the new water body, that is, there is a half-month adaptation period, after which a small amount of opening materials can be put in, and normal feeding can then be performed. The feed should be selected as the counterpart to the floating feed, and the daily feeding amount for every 50 kg of eatable fish is 1500-2500 g. The feeding time should be based on the eating and eating of the fish, the weather, the water quality and other factors. General feeding methods: From March to March, 4 times a day, 6am to 6pm, 3 hours each time; June to July 3 times a day, 6am to 6pm, flexible interval Master; from August to September twice daily, from 8 am to 5 pm, once every morning and evening; from October to November twice daily, from 8 am to 4 pm, for isometric feeding; Basically stopped after December.
Fourth, pool water management. Pool water management should be based on the growth stage of feeding fish and the temperature, the depth should be 1 meter when laying seedlings, and 1.5 meters deep in hot weather. Due to the large temperature difference between the deep water area and the water meter, the red mouth is not suitable for the high temperature of the water meter, and it is lazy to feed on the water. Therefore, it is necessary to minimize the temperature difference between the upper and lower water bodies to provide close feeding conditions for eating fish. The water depth is 2 meters in autumn and the temperature difference is Close, it is conducive to eating fish to eat freely.
Under normal circumstances, fish ponds do not need frequent water changes. Once there are too many leftovers or water quality is found, new water can be injected and the old water can be discharged. This is commonly known as horse racing water. The inlet and outlet should be equipped with a solid barrage for change. The amount of water is usually 1/2, and the transparency of the pool water is controlled at 35 cm. If the pool water is not rich enough, special aquatic fertilizers (biofertilizer and organic fertilizer as raw materials) can be added. The amount can be determined with reference to the instructions or the fat of the pool.
Fifth, disease prevention and control. The ponds that are newly raised in Anoectochilus will not cause fish diseases, but they must not be ignored for normal disease prevention, disinfection and sterilization.
(1) Before the fish species enters the pond, the pond water is disinfected with copper sulfate twice, and 250 g of water is used per meter of water depth per mu. The main role is to promote scales and strengthen self-protection capabilities, taking into account the sterilization of insecticides.
(2) After the fish is introduced into the pond, it may easily cause hydropodium because the flies may loosen or fall off during transportation. Potassium permanganate can be used for prevention and control, and 750-1000 grams of medicine can be used per meter of water per meter of water. When the temperature is lower than 15°C, it should be reduced as appropriate.
(3) Strengthen the inspection of the patrol ponds and use the counterpart drugs in a timely manner to completely eliminate the predators. Chlorella can be killed with copper sulphate in an amount of 350-400 grams per metre per metre of water. After dilution, the whole pool can be spilled. Moss can be made of copper sulphate or moss, which can be used alone or in combination. After dilution, the whole pool is splashed. Single use: 500 grams per gram of water per gram of copper sulphate, 500 gram of water per gram of water per acre of moss. Combined use: 150-250g copper sulfate + 500g moss net per acre per meter of water depth, dilute and mix and splash, the effect is better.
Six, matters needing attention
(1) To prevent lack of oxygen, an aerator must be provided. According to the weather forecast and the fish activity and eating conditions, the aerator should be opened and closed to ensure that the pool dissolves more than 5 milligrams of water/liter; remove debris from the pond and residual bait in the water.
(2) Alice mouth red? Very sensitive to drugs, medication should be used with caution, do not overdoses, misuse. Loss of appetite 1-2 days after treatment is a normal phenomenon, do not panic.
(3) The aquaculture water should not be less than 1 mu. The area is too small, which is not conducive to the floating of the floating feed and is not conducive to the setting of the food table. The size of the table should be 150-180 square centimeters.
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