A kind of artificial breeding method of red nine-thorn bass

Abstract

The present invention provides a method for artificial propagation of red sea bass, comprising steps: (1) parent selection, (2) cultivation pond treatment, (3) broodstock cultivation management, a. In the first week of cultivation, green light and yellow light are used Alternately irradiate the pond water surface; within the second to third weeks of cultivation, alternately irradiate the pond water surface with green light and red light; after more than 3 weeks of cultivation, use green light to irradiate the pond water surface; b. The feed is divided into grouper compound feed, 1-2 servings of fresh small fish and shrimp, 5-8 servings of chilled miscellaneous fish, and artificial soft pellet feed; the first feed was fed in the first week of breeding, and the second feed was fed in the second to third weeks of breeding. Feed the third kind of feed for more than a week; c. The pond water temperature is controlled at 23-27°C, and the dissolved oxygen in water is >5mg / L; (4) intensive cultivation before breeding, (5) artificial breeding, (6) collection and incubation of fertilized eggs The artificial breeding method of the red sea bass of the present invention not only promotes the feeding rate of the parent fish, but also enhances the reproductive ability of the parent fish, improves the spawning rate and the fertilization rate of the parent fish, and effectively realizes large-scale artificial breeding of the red sea bass.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to an artificial propagation method of red sea bass. Background technique [0002] Cephalopholis sonnerati (Cephalopholis sonnerati), commonly known as reticulated carp, cross fish, grouper, red rudder, red melon seed spot, is a fish belonging to the genus Cephalopholis sonnerati of the ray-finned fishes Perciformes suborder Percisidae . The body is red, with dark brown reticulation on the head and front of the back, without spots and stripes. There are no canines in the middle of the lower jaw, and the anal fin has 3 spines and 9 rays. Caudal fin rounded, without stripes. Often inhabits shallow seas with rocky bottoms, feeds on invertebrates and fish, and is tropical coral reef and coastal fish. As a high-grade edible fish in the existing market, red sea bass is deeply loved by consumers. However, there are few researches on the artificial breeding methods of red sea bass, ...

AI Technical Summary

Problems solved by technology

As a high-grade edible fish in the existing market, red sea bass is deeply loved by consumers. However, there are few researches on the artificial breeding methods of red sea bass, and effective breeding of red sea bass has not been carried out. Large-scale artificial breeding in factories has a low survival rate, especially in the breeding process, the feeding rate of the broodstock is unstable, the growth and reproductive capacity of the broodstock is low, and the spawning rate, fertilization rate and hatching rate are low, and it is still impossible to achieve effective breeding. The artificial breeding of red nine-thorn perch to meet the market demand for red nine-thorn perch

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