A high-density culture method for indoor cement ponds of fish fingerlings artificially bred in the same year

Abstract

A Current year fish fingerling indoor cement pool high density aquaculture method for bigmouth grenadier anchovy artificial breeding includes: preparation before stocking; fish fingerling stocking; aquaculture early stage management; aquaculture middle stage management; and aquaculture later stage management. The method is characterized by: coating an aquaculture pool with light blue cement paint, washing and cleaning the aquaculture pool, and adding local fresh water and river mouth brackish water into the aquaculture pool, wherein the local fresh water and the river mouth brackish water is performed sediment treatment and bolting-silk screen filtering treatment; dividing the fish fingerlings of bigmouth grenadier anchovies into different pools after net pulling training, wherein the average body length of the stocking size is 3.0 cm, and the stocking density is 180-200 fishes per square meter, the average body length of the fish fingerlings is 3.0-7.0 cm in early stage management, the average body length of the fish fingerlings is 7.0-8.0 cm in middle stage management, the fishing fingerlings are divided into different pools with the growth of the fish fingerlings, the aquaculture density is reduced to 120-150 fishes per square meter, the average body length of the fish fingerlings is above 8 cm in later stage management, the size of the fish fingerlings of the bigmouth grenadier anchovies is that the body weight is 2.0-3.0 g per fish and the body length is 9-11 cm, and the aquaculture survival rate is 75%-85% when the bigmouth grenadier anchovies are harvested.

Description

technical field [0001] The invention relates to the cultivation of the common anchovy, in particular to a method for high-density cultivation of the fresh fish species in an indoor cement pond for the artificial breeding of the common anchovy. Background technique [0002] Coilia ectenes, belonging to the order Herringoformes, Anchovyidae, and the genus Coilia, are commonly known as saury, hairy saury, hairy flower fish, bearded fish, and anchovy. It is mainly distributed in the Yellow Bohai Sea and the East China Sea in my country. It can be seen in all the rivers leading to the sea, such as the Liaohe River, the Haihe River, the Yellow River, the Yangtze River, and the Qiantang River. It is famous for its tender meat and delicious taste. rare migratory fish. In recent years, due to the influence of many factors such as overfishing and the deterioration of the ecological environment, the resources of the anchovy have declined sharply, while the market demand has continued u...

AI Technical Summary

Problems solved by technology

[0005] The outstanding features of the present invention relative to the existing wild silver anchovy indoor cement pond culture technology and artificially bred fish fingerling pond culture technology are: 1) the artificially bred fish fingerling indoor cement pond culture density (120-200 tails / m 2 ) compared to the existing wild swordfish indoor cement pond culture density (5-10 fish / m 2 ) and artificially bred fingerling pond culture density (2-3 fish / m 2 ) is much higher, which solves the bottleneck of intensification and large-scale mass production of fingerlings, which also saves breeding space, improves breeding yield and economic benefits; 2) the breeding survival rate (75-85%) of this method is obvious It is higher than pond culture (40-60%), and existing cement pond low-density culture (5-10 tail / m 2 ) survival rate (70-90%) is quite; 3) this method in the implementation process, has carried out the stress adaptation of dragging the net and moving the pond and sub-pond for many times, alleviated the strong wildness, violent temper, It is not suitable for human operation and the survival rate of batch transportation. The survival rate of the fish species of the anchovy cultivated by this method can reach more than 90% after 5 hours of transportation, and can be used for long-distance transportation of large-scale fish species, such as; value-added Releasing and exporting fingerlings