Procypris rabaudi breeding method

Abstract

The invention discloses a procypris rabaudi breeding method. The procypris rabaudi breeding method comprises the following steps that 1, an outdoor cement pond is cleared and sterilized; 2, a cement pond base fertilizer is supplemented and pond water fertilizing is performed, wherein fermented cow dung or chicken manure is collected as the base fertilizer, the usage amount per mu is 200-300 kg, and 1-2 kg of biological fish guano is supplemented per mu; 3, an oxygen increase pump and a submerged pump are erected in the cement pond; 4, the water quality before stocking is detected; 5, procypris rabaudi is transferred to the pond for breeding, wherein the procypris rabaudi fry stocking density is 50-100 / m<2>, the parent procypris rabaudi stocking density is 0.3-0.5 kg / m<2>, the oxygen increase pump is started for oxygen increase, the submerged pump is started to flush water so as to form a flowing water environment. The procypris rabaudi breeding method is simple, strong in operability, good in practice applicability and capable of achieving effective control and treatment of procypris rabaudi ichthyophthiriasis. A test indicates that the initial cure rate after the procypris rabaudi infects the ichthyophthiriasis is 98% or above, and the medium cure rate is up to 80%-90%.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a cultivation method of the Iwahara carp. The cultivation method provided by the invention can effectively control the outbreak of the small melon worm and improve the survival rate of the Iwahara carp. Background technique [0002] Yanyuan common carp (Procypris rabaudi Tchang) belongs to the subfamily Cyprinidae, the genus Procyprin, and is distributed in the main stream and tributaries of the Yangtze River above Yichang. One of the wild rare economic fish in Sichuan, Chongqing and other places, its distribution area is narrow and the population is small. Due to overfishing and environmental degradation, wild resources are increasingly depleted. It has been listed as a vulnerable species in the "China Red Book of Endangered Animals". [0003] In recent years, due to the impact of human activities such as the development of water conservancy and hydropower proje...

AI Technical Summary

Problems solved by technology

At present, the domestication and breeding of broodstock of Iwahara carp have been gradually perfected and matured, but there are certain difficulties in the cultivation of broodstock and fry of this fish, especially in intensive circulating water system cultivation, due to the extremely easy occurrence of small melon worm disease, often causing massive deaths, and even annihilation of the entire army

[0004] At present, the main method to control the outbreak of the melon worm is to rely on drugs to kill pathogens. The melon worm is a stubborn protozoan, which completes reproduction by cell division. It is difficult to kill with general drugs, and is usually only sensitive to mercurous nitrate. , basically ineffective against other drugs

However, mercurous nitrate can only kill larvae and adults, and has no effect on the formed cysts. When the environment is suitable, the cysts will release a large number of larvae immediately, parasitic on the body surface, gill filaments and even the intestinal tract of fish, giving Fish cause a lot of damage, and continuous medication is required in the prevention and control process. At the same time, mercurous nitrate is a highly toxic heavy metal chemical drug, which will cause great harm to the human body and fish itself. Contaminated, listed as banned drug