Freshwater lobster is a low-fat, low-cholesterol, high-protein nutritious food that is increasingly favored by consumers. In addition to nutritious freshwater lobster, it also has four characteristics: First, large body fat. The average weight of 100-200 grams, the largest individual up to 300 grams; the second is fast growth, high yield. The year of stocking can be harvested in that year, and 400 kg of fresh shrimp can be produced per acre of water surface; the third is strong adaptability. In the water temperature can be between 3-35 °C can survive; four is a mixed diet. Both animal feed and humus are eaten. Now we introduce its new method of breeding as follows:
First, pond construction. Freshwater lobsters prefer to live in waters with fresh water and rich oxygen. The construction ponds should be chosen where there is good ventilation, abundant water sources, no sources of pollution, and convenient drainage and drainage. The depth of the pond should be clear, the middle is deep, and the four sides are shallow. The bottom of the pool is loamy soil, and it is surrounded with real shots. It must be surrounded with 20-30 mesh gauze to prevent escape. In addition, in the pond, 100/mu of old tires should be put into the car to create a quiet and comfortable environment for the lobsters to prevent shelling and killing each other and improve the survival rate.
Second, clear pond fertilizer water. The pond should be dredged, trimmed and exposed. Ten to fifteen days before the stocking of shrimps, 50 kg of fresh lime dry pool was used for disinfection and fresh water was injected after 7 days. Before entering the water, install a 60-80 mesh water inlet screen with a water depth of 50-80 cm and ferment 300 kg of livestock manure per acre to cultivate plankton.
Third, shrimp stocking. Shrimp stocking should be carried out in the morning or evening of 3-4 months. The stocking size of shrimps is generally 3-5 cm. The stocking rate is 3500-4000 per acre. The specifications of shrimps stocked in the same pond need to be neat and consistent.
Fourth, carefully feeding. Within 3 days after seedling, minced small trash fish, legged meat and artificial diets were added; when the shrimps were 6-7 cm long, they could all be fed with crushed snails, river clams and appropriate amount of plant food. . The daily feeding amount is full, eaten, and no residual bait is left. Invest each morning and evening each time. At night, invest 70%-80% of the total daily amount. The bait should be placed in the shallow water around the pond. Wherever the lobster is concentrated, it can be properly cast to check the eating situation.
Fifth, strengthen management. Freshwater lobster grows fast, has a strong metabolism and consumes large amounts of oxygen. Therefore, we must strengthen water quality management in particular. The first is to look at the water color, and the light green is better; the second is to test the pH of the water to be more suitable for the PH value of 7-7.5; the third is to change the water in time, change the water once in 15-20 days, change the water volume to 50% of the pool water, in the normal temperature (20°C-30°C) The shrimp ponds are reared at a depth of about 1 meter and the temperature is below 15°C or above 35°C.
Six, disease prevention and treatment. Freshwater lobsters have higher stocking densities and care should be taken to prevent them. One is shrimp shell disease. Can be mixed with malachite green and Forlin liquid, give lobster medicine bath 20-30 minutes. The second is black shank disease. Methylene blue Quanchiposa can be used. The third is ciliate disease. The treatment can be used to dip the diseased lobsters with copper sulfate solution for 5-6 hours, for each treatment course for 3-5 consecutive days.
Seven, timely gain. Freshwater lobsters are generally stocked from April to March and harvested from October to November. At the time of harvesting, one-time fishing can be performed in the evening with dry ponds or seine nets. It can also be listed in batches in stages.
Objective To evaluate the methods and the effects of an Airway Management nursing team in clinical practice
Airway Management
Airway Management,Airway Management Devices,Emergency Airway Management,Airway Obstruction Management
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