After September, crab farming entered a critical period, and all production inputs were close to the maximum. The management will directly affect the economic benefits of crab breeding. Therefore, it is necessary to strengthen the post-management, and there should be no negligence. 1, water level management: After September, the temperature changes day and night, the maximum difference of up to 10 °C, so pay attention to reasonable regulation of water level, to prevent the drastic changes in water temperature, to pay more attention to the weather, especially in the 5-7 days of weather trends If there is a substantial cooling forecast, it is necessary to deepen the water level in advance to keep the water temperature relatively stable. When changing the water, pay attention to the temperature difference can not be greater than 3 °C. In case of heavy fog, it is necessary to turn on aeration equipment or add oxygen in time to prevent hypoxia. 2. Feed feeding: animal feed can be chilled frozen fish or small trash fish, accounting for more than 70% of the total feeding amount, with a small amount of corn and high-protein full-priced compound feed, the daily feeding amount is About 10% of the amount of crab ponds is stored to ensure that the crabs eat well. 3. Before the last shelling, use hard shell treasure every 7-10 days, supplement calcium source, promote crab shell hardening, and add multi-dimensional mineral products such as crab fat treasure to strengthen fattening and promote crab Gonadal development and the accumulation of various nutrients, generally make crab more weight 5-10%, promote the early listing of crabs, improve yields, increase efficiency. 4. Check and prevent escape facilities. Crabs after maturity have increased their activity and often crawl along the escape prevention facilities. Weeds and weeds on both sides of the anti-escape facilities, especially high-lever plants, should be promptly removed. Special personnel should be assigned to work on a daily basis, and whether or not the anti-escape facilities should be inspected day and night for damage and loopholes should be promptly repaired and problems must be solved. 5, catch large catch, catch light, light release, to prevent the broken claws in the process of crab claws, severely affect the quality of crabs, crab crab can also be placed in the end of the cage, so that the cage into the cage Fall into the crab, this method of crabs is better, trapped crabs have fewer claws. Rabies vaccine is an active immunizing agent used to prevent infection caused by the rabies virus. The vaccine works by causing your body to produce its own protection (antibodies) against the rabies virus. Rabies Vaccine Injection,Rabies Antibody,Anti Rabies Dosage,Human Rabies Antibody Changchun Zhuoyi Biological Co., Ltd , https://www.zhuoyibiological.com