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The cultivar method for Cladocera is exemplified by large Cladoceras. A 1.0 to 1.2 meter deep cement tank is used as a cultivation pond. The water injection in the pond is about 0.5 meters. The gauze must be filtered when water is injected to prevent the filter from being blocked by insect larvae, filamentous algae, sand and mud blocks. Summer temperatures are high, the pool water can be properly deepened, and the water depth in spring and autumn can be reduced to about 30 cm.
When fertilizing, such as the application of farmyard fertilizer, per acre can be applied into the decomposed human and animal manure 1,000 kg, farmyard fertilizers need to be installed in cages, water filtration and then into the pool. If inorganic fertilizers are applied, 37.5 g of ammonium nitrate or 6.5 g of ammonium sulfate may be applied per cubic metre of water. After every 3 to 5 days, the amount of topdressing is 1/3 to 1/2 of the initial amount of fertilizer.
When the water temperature is above 16°C, add 30 to 50 grams of horny species per cubic meter of water. When the temperature is 20~25°C, a large number of larval horns can be bred in 3~4 days and can be harvested in about 7 days. When the pool water is tan or olive, the amount of horns is large; the water in the pool is transparent and the amount of horns is low.
The clumps in good condition are light grey green. Each time the amount of fish is 20% to 30% of the total branch angle. Can also be taken every day per mu 30 to 35 kilograms of branches, and every 2 to 3 days per acre applied organic fertilizer 300 to 500 kilograms and appropriate amount of inorganic fertilizer, to increase the output of the clavicle type, generally per cubic meter of water can Harvest about 800 grams of horns.
How to cultivate freshwater horns
Freshwater Cladocera is commonly referred to as "water cricket," also known as "red worm" or "goldfish worm." The nutritional value of leeches is extremely high, and it is a good live feed for the fry culture of common cultured fish such as cockroaches, cockroaches, clams, cockroaches, etc., and the special aquaculture larvae. There are two breeding methods for freshwater cladocera: one is parthenogenesis, which produces summer eggs, and the summer eggs do not require direct fertilization for hatching. This is the main breeding method for freshwater cladocera; the other is bisexual reproduction. Winter eggs, winter eggs need to go through the dormancy period before hatching. When the water temperature is high, it takes only 5 to 8 days for hatchlings from summer eggs to grow to sexual maturity. Freshwater Cladocera optimum growth temperature of 18 ~ 22 °C. Its main foods are bacteria, unicellular algae, yeasts, and organic debris particles. The life span of Cladocera ranges from weeks to months.