Method for cultivating fries of coilia ectenes in soil pond

Abstract

The invention discloses a method for cultivating fries of coilia ectenes in a soil pond, comprising the steps of selection of an outdoor soil pond fry cultivation pond, secondary intensified cultivation of parent fishes, separation of the parent fishes and the fries, and early-stage cultivation of the fries of the coilia ectenes by cultivating food organisms including rotifer, cladocera and the like. The method disclosed by the invention is simple and convenient to operate, economical and practical, realizes repeated use of the parent fishes, and is low in fry cultivation cost, high in fry survival rate, and strong in disease resistance. By adopting the principle of natural selection, weak and sick fries are eliminated, so that the purpose of improving the fry quality is achieved. In addition, pelagic organisms are cultivated by utilizing glucose, amino acid and other nutrient solutions, so as to provide sufficient baits for the fries, and thus the quick growth of the fries is guaranteed.

Description

technical field [0001] The invention relates to a method for raising seedlings of cuttlefish, specifically, a simple, practical, green and environment-friendly method for ecological seedling raising of cuttlefish in earthen ponds, and belongs to the technical field of fish breeding. Background technique [0002] Swordfish ( Coilia nasus ), belonging to Clupeiformes, Engraulidae, Anchovy ( Coilia ), commonly known as saury, is an important economically migratory fish in the Yangtze River in my country. It is famous for its freshness, fat and beauty, and enjoys the reputation of one of the "three delicacies of the Yangtze River". In recent years, the natural resources of sword anchovy have declined sharply, which is far from meeting the needs of the market. With the breakthroughs in irrigation, artificial breeding and pond technology, sword anchovy is gradually becoming a high-quality fish that is currently in short supply and has broad prospects. Aquaculture breeds. [00...

AI Technical Summary

Problems solved by technology

[0003] At present, in the seedling raising technology of swordfish, because the parent fish of swordfish is abnormally "delicate" and has a strong stress response, there is a saying that "you will die when you leave the water". The commonly used artificial induction and insemination technology can easily lead to scales falling off and death. The non-reusable use of the broodstock of the sword anchovy has also led to a sharp increase in the cost of seedling breeding; at the same time, there are asynchronous development of the gonads of the sword anchovy population, and there are problems such as cumbersome operations and large-scale seedling breeding in artificial induced labor and insemination techniques

In addition, in the current intensive breeding of swordfish, the indoor cultivation technology of open-mouthed bait is still immature, resulting in a low emergence rate of fertilized eggs after they emerge from the membrane; If it is not cleared, it is easy to breed pathogens and cause disease. The current method of frequent water changes requires more manpower and material resources, and the cost of seedling cultivation is further increased.