Crossbreeding method for groupers

By using gradient temperature-sensitive acclimatization, temperature-sensitive modifiers, and stress-resistant feed in combination, the problems of narrow temperature adaptability and low hatching rate in grouper hybrid breeding have been solved, achieving improved wide temperature range and efficient breeding of grouper, expanding the breeding area and improving economic benefits.

CN122074419APending Publication Date: 2026-05-26SANYA AGRI INVESTMENT MARINE IND CO LTD
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Patent Information

Application Number
CN202610239971.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-28
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing grouper hybridization breeding technology has failed to fully utilize the complementary advantages of temperature adaptability genes between tropical and cold-water grouper varieties, resulting in the failure to improve the wide temperature range of hybrid offspring and low hatching rate, making it impossible to expand the aquaculture area.

Method used

By employing gradient temperature-sensitive acclimatization combined with the synergistic effect of temperature-sensitive modifiers and stress-resistant feeds, the temperature-sensitive modifiers adjust the water temperature-sensitive adaptation environment, the stress-resistant feeds strengthen the parent fish's constitution, and the combined use of reproductive care agents and standardized spawning and insemination processes, the temperature adaptability of grouper sperm and eggs in both hot and cold water is improved, and water quality and temperature control are optimized during hatching and seedling cultivation.

Benefits of technology

It significantly improved the wide temperature range of hybrid offspring, increased the hatching rate of fish eggs and the survival rate of fry, expanded the aquaculture area, enhanced the stress resistance and disease resistance of fry, and improved the economic benefits of aquaculture.

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Abstract

The invention relates to a grouper crossbreeding method. The method comprises the four steps of parent breeding, temperature-sensitive domestication, artificial spawning and insemination, incubation and fry breeding, specifically, cold water-based clear water stone spots and hot water-based brown spot stone spots are selected as parents, the clear water stone spots are used as female parents, the brown spot stone spots are used as male parents, and the middle water temperature is adapted through gradient temperature-sensitive domestication; stress-resistant feed containing hilsa herring egg source peptide and haematococcus pluvialis astaxanthin ester and a temperature-sensitive blender are matched, a reproductive care agent is supplemented to strengthen sperm and egg performance, and normative spawning induction, insemination and graded cultivation processes are adopted. According to the method, the problems of poor water temperature adaptation and low hatching rate of grouper hybrid sperms and eggs in different temperature areas are solved, the wide-temperature property of filial generations is improved, the method adapts to the water temperature of 18-28 DEG C, the hatching rate, the fry survival rate, the adult fish survival rate and the average weight of single fish are remarkably improved, and technical support is provided for industrial application.
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