Crayfish have a fast growth rate. When the water temperature is adequate and sufficient feed is provided, juveniles usually grow for 2 to 3 months to reach the commercial specifications. Crayfish are gradually grown into clams with each and every time. 1 shell, the specifications will also be larger, the feed intake has also increased, juvenile shrimp grow every 5~8 days before the first shell, post-growth generally 8 to 20 days, 1 shell, crawfish shell 11 Sexual maturity can be achieved later, and crayfish can continue to grow after sexual maturity. The crawfish clam shell of this farmer was only 7~8 times. Although the clam shell cycle is relatively long, the crayfish can be promoted as soon as possible by increasing the energy level in the feed and promoting the use of some drugs. Thus, the crayfish specification can be improved. The reporter contacted Tang Jianqing, a researcher at the Jiangsu Provincial Institute of Freshwater Fisheries. Tang Jianqing said that crayfish have only 7 to 8 shells, and now they can increase the level of protein in the feed to promote crayfish growth. In addition, the reporter also contacted Ding Fengqin, director of the breeding department of the Anhui Institute of Freshwater Fisheries, and Ding Fengqin said that artificially controlling the promotion of crayfish as soon as possible should first ensure that pond grass accounts for more than 30% of the total area of ​​the pond and maintain the excellent water quality of the pond. In addition, the content of animal feeds in self-made feeds, such as snails, river clams, animal wastes, etc., can be increased to improve the quality of feeds, and promote the hardening of crawfish shells as well as crustaceans. Quanchi splash lime slurry, on the one hand disinfecting the water, improve the pH of the pond water (acidic water is not suitable for normal growth of the crayfish clam shell), on the other hand to increase the calcium source in the water to provide calcium for the crayfish after the clam shell quality. In addition, under the conditions of ensuring feed nutrition and breeding environment, it is possible to add locust to the feed of crayfish, to improve the synchronization of the clamshell pods, and to improve the crayfish specifications and yield. If the microfluidic state (or ground water change) is provided at this time, maintaining adequate oxygen in the pond can speed crawfish clams. Guan Yuzhong of the Huaihe Fish Breeding Farm in Yixian County stated that the strict and standardized breeding management is also a way to improve the crayfish specifications, mainly from the control of the size and density of the crayfish seedlings and crayfish stocking, and the cultivation of aquatic plants. Feeding feeds early (mainly for animal feeds and later for plant feeds), maintaining microfluidic status (or changing ground water), etc., generally produced without extending the growth cycle. Crayfish specifications can reach 40 grams / tail or more. IGG Rapid Test,IGM Rapid Test,IGG IGM Rapid Test,Nucleic Acid Detection Kit ZSL MED , https://www.zslmed.com
A few days ago, a reader of Huai'an called the newspaper “Fishing Technology 110′′ to reflect that he bred crayfish currently weighing 60-80 grams/tail, the largest being about 100 grams/tail, and he wanted to be listed and sold in half a month later. Currently, crawfish It has been shelled for 7~8 times, and now I want to promote the crayfish to shell once more and increase the size of the crayfish before selling it. He asked, can the crawfish be shelled? How to speed up the crayfish clam shell speed?