The size of the squid piled up is too small. Some squid's summer flowers are small in size and have a body length of 3 to 5 cm. The adaptability and feeding power of the squid seedlings are very weak and the survival rate is relatively low. It is suggested that the length of carp seedlings to be reared should be more than 5 cm, and the survival rate of carp seedlings with a body length of more than 10 cm should be higher. In addition, the stocking density of carp should be reasonably determined according to the amount of wild fish and shrimp in the pond, generally 10 to 15 Tail/acre. Eel is not suitable for sturgeon. Sturgeon is a ferocious fish. It feeds on live fish and live shrimp for life. If there are too few fish and shrimp suitable for salmon in the pond, it is likely to cause squid killing each other. This is bound to happen. Affect its survival rate. It is recommended to store a certain amount of summer fish, etc., in the crab pond before stocking the eel fry, or to stock some eel and shrimp so that they can reproduce naturally and provide palatable feed for the eel. Oxygen deficiency in crab ponds has high requirements for dissolved oxygen, and many fish farmers have high stocking densities, more silt on the bottom of the pond, and worsening water quality, which often results in the lack of dissolved oxygen leading to the death of carp. The ponds raising catfish require abundant water sources, good water quality, no pollution, and convenient drainage and drainage. In addition to adjusting the water quality by adding water or changing water during the breeding process, they must also regularly use quicklime and biological agents to improve the water quality; The conditions of the farmers can also improve the dissolved oxygen status of the pond by installing micropore aeration and other equipment in the pond. Diseases and improper use of drugs. Diseases of catfish are also a major cause of low survival rate. Coupled with carp are sensitive to many drugs. Improper treatment of ponds can also lead to the death of carp. It is recommended to adhere to the principle of “disease-free prevention, early disease prevention, prevention-responsive-treatment, and combination preventionâ€. Thorough clearing of ponds before stocking should be done to create a good breeding ecological environment, and the use of quicklime and biological agents to improve the water quality should be reduced. The purpose of the salmon morbidity. FIA(Fluorescence Immuno Analyzer) FIA Analyzer,Fluorescence Immunoassay,Fluorescence Immuno Analyzer,Fluorescence Immunoassay Analyzer ZSL MED , https://www.zslmed.com
Causes of low survival rate of carp in crab pond
In order to increase the benefits of pond culture, squid was placed in crab ponds. This was a project that was vigorously promoted several years ago. Today, some farmers also report that the squid has a low survival rate. According to the investigation of the specific conditions of many farmers, the reasons for the low survival rate of squid are summarized below.