一种罗氏沼虾晚熟高产新品系的选育方法
By establishing and screening the basic and core populations of new late-maturing and high-yielding varieties of giant freshwater prawns, adopting standardized breeding and labeling, and utilizing effective accumulated temperature screening, the problem caused by precocious maturation of giant freshwater prawns was solved, resulting in improved growth rate and survival rate, and the production of late-maturing and high-yielding giant freshwater prawns.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUANGXI ACADEMY OF FISHERY SCI
- Filing Date
- 2023-05-12
- Publication Date
- 2026-07-17
AI Technical Summary
The precocious sexual maturity of giant freshwater prawns leads to slower growth, reduced aquaculture yield, increased feed conversion ratio, lower quality of marketable prawns, and smaller and uneven size at harvest. Existing technologies make it difficult to accurately compare families or populations that reproduce at different times.
By establishing basic and core populations of late-maturing and high-yielding specialized strains of giant freshwater prawn, and using standardized breeding and marking, growth rate, individual uniformity, and survival rate were selected as selection indicators. The effective accumulated temperature was used to screen for new late-maturing and high-yielding strains of giant freshwater prawn, and high-yielding strains were obtained through hybridization.
It reduces the errors caused by asynchronous breeding, delays the sexual maturity time of giant freshwater prawns, increases growth rate and survival rate, and increases individual size, thus achieving late-maturing and high-yield giant freshwater prawns, with a growth rate increase of 9-11% and a survival rate increase of 4-6%.
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Figure CN116473001B_ABST