Hybrid seedlings-cultivating method for improving growth traits of siniperca scherzeri

Abstract

The invention belongs to the agriculture technical field necessary for human life, and relates to a hybrid seedlings-cultivating method for improving the growth traits of the siniperca scherzeri. The method comprises the following main steps of: selecting the siniperca scherzeri as the male parent and the siniperca chuatsi as the female parent, and adopting the methods for building a plastic house to overwinter, intensively cultivate and the like; hastening the parturition by the means that the exogenous hormone is synchronously injected into the male parent and the female parent for once, and packing a parent fish by a dishtowel during artificial insemination; adopting the breeding technology and measurement such as the artificial semidry inseminating, the circuit water flowing hatching and the like, so that the use ratio of the male parent is improved by 1.5-2 times; and intensifying the cultivating management in the seedling stage and the cultivating stage by a segmented cultivating mode with the palatable bait fish. The invention successfully develops a method for improving the growth traits of the siniperca scherzeri to cultivate an improved new product which is antiretroviral, disease-resistant and faster in growth speed compared with the common siniperca scherzeri. Meanwhile, the existing hybrid seedlings-cultivating method of the siniperca scherzeri is changed, the synchronous mature of the parent is guaranteed, the propagation time is prolonged, the operation is simpler and more convenient, and the production efficiency and the survival rate of the artificial propagating and the hybrid seedlings hatching are improved.

Description

technical field [0001] The invention belongs to the field of agricultural technology necessary for human life, relates to fish breeding technology, and in more detail relates to a method for producing a new variety of mandarin fish species with obvious morphological characteristics and growth advantages by using fish interspecific hybrid breeding technology. Background technique [0002] In order to increase the growth rate of mandarin fish and to breed new mandarin fish species with obvious growth advantages, stress resistance and strong disease resistance, the main technology is cross breeding. Its seed production method is as follows: [0003] 1. Select the mandarin mandarin fish as the male parent and the mandarin mandarin duck as the female parent; [0004] 2. Running water stimulation method to promote sexual maturity; [0005] 3. Use exogenous hormone injection to induce labor, and inject the male parent mandarin fish first, and then inject the female parent mandari...

AI Technical Summary

Problems solved by technology

[0009] 1. The running water stimulation method cannot well promote the simultaneous maturation of the two different mandarin mandarin gonads, so that the breeding seasons of the parents cannot overlap more effectively, and at the same time, it cannot meet the needs of early reproduction in production;

[0010] 2. The method of oxytocin is complicated. Parents should be injected at intervals of 2 hours and divided into two injections, which increases the stress response to broodstock caused by manual operation, which is not conducive to oxytocin and postpartum recovery of parents;

[0011] 3. Dry artificial insemination, for the male spotted mandarin fish, which mainly comes from wild resources and rarely cultivated artificially, the utilization rate of sperm is low, resulting in a serious waste of resources;

[0012] 4. The feeding habit conversion of hybrid seedlings reduces the survival rate of seedlings