Method for reducing long-distance transportation stress fatality rate of takifugu obscurus

Abstract

The invention discloses a method for reducing the long-distance transportation stress fatality rate of takifugu obscurus. The Takifugu obscurus has different biological characteristics from common cultured fishes, such as no scale on the body surface, teeth in the mouth, fierce temperament, love biting, sensitivity to water temperature change and the like, and after long-distance transportation, the Takifugu obscurus has strong stress response and high death rate. The method comprises the following operation steps: optimizing an oxygenation mode and regulating and controlling water temperature and dissolved oxygen so as to create a more suitable water environment; the culture density is reasonably arranged to fully utilize the space; sick and disabled fishes can recover faster through isolated medicated bath; and mixing the medicine with the feed and feeding to consolidate the fish body. According to the process, the stress fatality rate of the takifugu obscurus offspring seeds is reduced to 14.7-19.1% to the maximum extent, and the breeding survival rate of the takifugu obscurus offspring seeds is remarkably increased. Effective technical guarantee is provided for large-scale production of takifugu obscurus and sustainable development of related industries.

Description

technical field [0001] The patent belongs to the technical field of fish farming, and specifically relates to a method for reducing the stress fatality rate of pufferfish in long-distance transportation. Background technique [0002] As a traditional and precious edible fish in my country, Takifugufasciatus, one of the three fresh foods in the Yangtze River, has always conquered a large number of diners with its delicious and delicate taste, less thorns and smooth taste. Especially in my country's Yangtze River Delta, Japan and South Korea, there is a long history of eating this fish. With the improvement of my country's economic development level and the growth of people's income, the demand for high-end aquatic products is increasing day by day, so the related industries of pufferfish have broad prospects. [0003] At present, the cultivation of Chinese pufferfish is mainly concentrated in coastal and riverside areas, such as Hai'an City, Jiangsu Province, Zhongshan City,...

AI Technical Summary

Problems solved by technology

Therefore, if foreign farmers want to introduce seedlings, they must go through long-distance transportation. During transportation, due to the characteristics of this species of fish, such as no scales on the body, teeth in the mouth, fierce temperament and love to bite, and the density is often too high during transportation, The road is bumpy, and many fish will have a stress response, leading to mutual attacks. Some individuals are in poor health and have reduced resistance, and are often susceptible to saprolegniasis, rotten tail disease, and small melon worm disease, etc.

Therefore, puffer obscurus after long-distance transportation often cannot adapt to the new environment well, and the survival rate is extremely low