Method for improving survival rate of rice field eels in transportation process

Abstract

The invention relates to a method for improving the survival rate of rice field eels in the transportation process and belongs to the technical field of fish culture. The method comprises the following steps: (1) temporary culture of the rice field eels, i.e. transferring the rice field eels to be transported into a temporary culture net cage to carry out temporary culture for one day, stopping feeding and placing few loaches into the temporary culture net cage; (2) preparation and bagging of water for transportation, i.e. dissolving vitamin C and astragalus polysaccharides in water, wherein the vitamin C being added is in an amount of 10g/m3, and the astragalus polysaccharides being added are in an amount of 3g/m3, simultaneously regulating the pH value into 7.0 to 7.5, placing the rice field eels and the water for transportation into a special oxygen bag for aquatic products according to a ratio of 1:1, filling oxygen and sealing, wherein the oxygen content is 6mg/L; and (3) the transportation of the rice field eels, wherein the water is changed for once at intervals of 6 hours in the transportation process so as to ensure that the dissolved oxygen content of the water in the bag is always over 6mg/L and ensure that the pH value is always in the range of 7.0 to 7.5. According to the invention, the vitamin C and the astragalus polysaccharides are added into the water for transportation of the rice field eels, so that the anti-stress capacity of the rice field eels is improved, the stress response, the injury and the death of the rice field eels in the transportation process are effectively avoided, the survival rate of the rice field eels in the transportation process is successfully improved, and a reliable transportation technology is provided for solving the problem of a rice field eel artificial propagation technology and improving the economic benefit of the rice field eels.

Description

technical field [0001] The invention belongs to a method for improving the survival rate of rice field eel transportation, and belongs to the technical field of fish breeding. Background technique [0002] Eel (Monopterus albus) is commonly called as ricefield eel, and its meat quality is delicious, and nutritional value is high, and domestic and international market prospect is broad, and is very popular, is one of important freshwater famous-quality fish of our country. Because eel has relatively simple requirements on the habitat environment, it can be suitable for breeding in various water bodies such as rice fields, ponds, lakes, etc., and the benefits of eel farming are good. The enthusiasm of the masses for eel farming is very high, especially the intensive use of cages. With the breakthrough of eel farming technology, the scale of eel farming has developed rapidly. The provinces of Hubei, Hunan, Anhui, Jiangxi, Jiangsu and Zhejiang in the middle and lower reaches of ...

AI Technical Summary

Problems solved by technology

There are certain problems in these transportation methods, mainly as follows: during the transportation process, there is too much packing, which causes "fever disease"; during the long-term transportation process, the dissolved oxygen is insufficient and the water quality deteriorates, which reduces the quality of the eels; Injury to the field eel; the quality of the field eel itself is poor or diseased eel, etc.

These problems can lead to the death of eel during long-distance transportation, low survival rate, and poor quality. The survival rate of cage stocking is low, generally not more than 50%, which is not conducive to the next step of cage culture and the improvement of economic benefits.