Otsuka Culture Technology 1. 1 Dianchi Construction Cement tanks for feeding large oysters should be built in a place where the environment is quiet, cool and humid, and water is abundant. The area of ​​the larval pond is generally 1-2 m2, the height of the pond wall is 50cm, and the water depth is 30 cm; the area of ​​the grazing pond is generally 10--20 m2, the wall height of the pond is 1.2m, the water depth is 50 cm, and the pool shape is a rectangle. In and out of the inlet and outlet, a cave is built around or in the middle of the pool. Generally, there are 2 to 3 pools, 20 cm high, 50 cm deep, and 40 cm wide. The outer cement of the cave is smoothed to prevent scratches. In the pool, pebbles, gravel or molten stones can be placed to increase the mineral content of the water. Pools can be built indoors or outside, and shaded trees can be planted around the outdoor rearing ponds to keep the pool cool. A built-in terrace is built in the pool for rest on the ground. 1. 2 large stockings Before stocking, the cubs should be carefully inspected for any damage to the larval pool for maintenance and disinfection. Cub medicine bath disinfection to prevent water mildew and bacterial diseases. The number and size of the pups are checked, and individual puppies are bred in separate pools of large, medium, and small scales. Individuals of the same specification have basically the same feeding capacity and can avoid mutual food. The stocking density should be determined according to the different feeding methods, technical levels, and feeding conditions. The stocking specifications and densities for different rearing methods of pups are shown in the attached table. Dietary densities for different feeding methods -------------------------------------------------- ----------------------------- Feeding specifications (g/tail) Stocking density (tail/m2) -------------------------------------------------- ----------------------------- Temperature control feeding 6 6-8 Water feeding 200 4-6 Breed 200 2-4 at room temperature Underground breeding 200 3 - 5 -------------------------------------------------- ----------------------------- 1. 3 Feed and Feeding The larval opening bait can be fed with digestible live baits such as chironomid larvae, leeches, leeches, etc. It can be fed to shrimps, small fish, and beef and mutton stew after raising more than 20g, and can be fed to loach, low-value fish over 100g. Shrimp, crab, etc., can also be fed artificial feed. The content of artificially-combined bait protein should be as high as 40%-50%, mainly consisting of fishmeal and α-starch. Before use, it should be transferred into lumps, lumps and strips with water and put on the bait. Daily feeding rate: live bait is 10% - 15%, bait is put in water, if live loach or small fish, can also be put into one, to meet the food intake of 3--5 days. Find dead fish, dead shrimp or dead mud in the pool and fish it out in time to avoid damaging the water. The artificial bait feed rate is 10%, and it is generally cast on the food table. Usually it is fed before dark in the evening. The water temperature is in the range of 15-25°C, especially about 20°C. The big quail feeds most in the 3 hours after dark. When the weather is hot, the water temperature is high, or the water quality is not good, the maggots reduce their food intake or stop feeding. Therefore, when feeding food, it is necessary to flexibly grasp the situation according to the specific circumstances. 1. 4 Day-to-day management of giant salamander breeding The day-to-day management of Daxie can be easily summarized as a diligence, early morning, second-look, and four-day defense. (1) A diligence. Intensive patrol pool, patrol pool 3 times a day, the morning patrol pool to see the situation after feeding, at noon patrol pool pay attention to changes in water temperature, night patrol pool observation cercariae feeding conditions. (2) Two mornings. Early stocking, early eating. Note that if the water temperature rises after the Spring Festival, if you are eating, if you do not eat it, you need to warm it up so that you can eat as soon as possible. (3) Second look. Look at food intake and water quality. Looking at food intake, mainly to see whether the large quail is feeding or disorderly in the food market, to see if there is food rushing or there is no vomiting in order to adjust the feeding amount; to see the water quality, it is mainly to see if the water quality is fresh and the transparency is high so that it can be taken Measures to improve water quality. (4) Four defenses. Heatstroke prevention: In the summer, the water temperature is high, and it is easy to get sick. Therefore, it is necessary to prevent the heatstroke from cooling. Outdoor sun protection mainly set sun shade, so that the light intensity is reduced. Change the water and take it in the middle of the night. This will help the big brother to “cross the summerâ€. Disease prevention: It is necessary to pay attention to the status of feeding activities of Dalats at any time. If you discover that Daxie is traveling alone, you must check the condition, use isolation and prevention measures, and promptly treat the disease. Anti-escape: constantly check in and out of the water, strengthen management, to prevent escape. Waterproof: Pay attention to changes in water quality and keep the water fresh. 1. 5 Disease Prevention and Control The prevention and treatment of rickets should adhere to the principle of prevention and treatment, and do the following: 1.5.1 The use of tap water, preferably using tap water or groundwater, to reduce bacteria and pollution sources. With the use of natural water sources such as reservoirs, mountain streams, and rivers, the influent water must be filtered to prevent enemy pests from entering the pond. 1.5.2 Fish and shrimp with pathogens should not be mixed in Dianchi Lake. 1.5.3 Newly introduced giant oysters must be sterilized before they can be kept in the pond. 1.5.4 Disinfect the pool water regularly and feed medicine baits or medicine baths to prevent the occurrence of diseases. -
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