Composite preparation for killing gymnocypris prgewalskii ichthyophthirius multifiliis and preparation method and application thereof

Abstract

The invention relates to a composite preparation for killing gymnocypris prgewalskii ichthyophthirius multifiliis and a preparation method and application thereof. The composite preparation comprises the following raw materials in percentage by weight: 68 to 72 percent of NaCl, 10 to 15 percent of MgCl2, 10 to 12 percent of Na2SO4, 0.2 to 1 percent of CaCl2, 1 to 5 percent of KCl and 0.4 to 0.6 percent of NaHCO3. The preparation method comprises the following steps of: (1) filtering fresh water for dissolving the raw materials of the composite preparation, aerating fully and oxygenating for later use; and (2) dissolving the raw materials in a fresh water pond, aerating, and mixing uniformly to obtain the composite preparation. The composite preparation is non-toxic and environment-friendly; imagoes, cysticercus and larvae of the ichthyophthirius multifiliis which is parasitized to gymnocypris prgewalskii can be killed effectively by using the composite preparation scientifically, and the demand of preventing and controlling ichthyophthirius multifiliis in the process of culturing gymnocypris prgewalskii fingerlings is met; and a preparation process is simple and low in cost, and has a bright application prospect.

Description

technical field [0001] The invention belongs to the field of prevention and treatment of fish parasitic diseases, and in particular relates to a compound preparation for killing Qinghai Lake naked carp and small melon worms, as well as its preparation and application. Background technique [0002] Qinghai Lake naked carp (Gymnocypris prgewalskii), commonly known as Huangyu, scaleless fish, etc., belongs to Cypriniformes, Cyprinidae, Schizothorax subfamily, and the genus Gymnocypris. It grows and reproduces and has strong vitality. It is an important economic fish in Qinghai Lake and is at the core of the entire ecosystem of Qinghai Lake. In recent years, due to the reduction of water supply in Qinghai Lake, the lake water level has dropped, the lake surface has shrunk, and the salinity has increased, posing a serious threat to the survival and reproduction of aquatic food organisms and fish. The sharp decline of the naked carp resources in Qinghai Lake, the naked carp resou...

AI Technical Summary

Problems solved by technology

These traditional chemical drugs not only cause environmental problems, but also easily make pathogens resistant

At the same time, because Qinghai Lake naked carp is more sensitive to chemical drugs such as formalin, high concentration of chemical drugs is less effective in treating Qinghai Lake naked carp with small melon worm disease

Although some scholars use a certain concentration of NaCl to treat small melon worms, but because monovalent cations have certain toxicity to fish, low concentrations often fail to achieve the therapeutic effect, and high concentrations cause the death of already sick and weak fish