A kind of rapid domestication method of cultivating silver pomfret juveniles

A technology for juvenile fish and silver pomfret, applied in fish farming, climate change adaptation, animal husbandry, etc., can solve the problem of poor domestication effect of breeding silver pomfret fry, low fry survival rate and growth rate, high labor cost and feed Cost and other issues, to achieve the effect of improving food intake rate and survival rate, improving food intake rate and normal body shape

Active Publication Date: 2021-07-20
NINGBO UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent is mainly aimed at wild silver pomfret fry, and the domestication effect on farmed silver pomfret fry is not good; the domestication time is relatively long, and the domestication effect is not significant enough; the domestication process is relatively cumbersome, requiring relatively more labor costs and feed costs; fry survival rate relatively low growth rate

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of rapid domestication method of breeding silver pomfret juveniles, the domestication process is divided into four stages, specifically as follows:

[0031] Fish for domestication: second-generation cultured silver pomfret juveniles, fork length 1±0.3cm;

[0032] The aquaculture water used for domestication has a water temperature of 20±1°C, a salinity of 25-30‰, and a pH of 7.6-8.2. The sand-filtered clean seawater has dissolved oxygen>10mg / L. The aquaculture water is sand-filtered and ultraviolet-sterilized. During the acclimatization process, the light intensity was controlled at 300-500Lx.

[0033] In the first stage, silver pomfret juveniles were cultured in three circular culture ponds with a diameter of 5m, and the water level in the culture ponds was 1.4m. The oxygenation method of the culture pond is central oxygenation, that is, the air stone is placed in the center of the culture pond to add oxygen. About 50,000 silver pomfrets were cultured in each...

Embodiment 2

[0038] A kind of rapid domestication method of breeding silver pomfret juveniles, the domestication process is divided into four stages, specifically as follows:

[0039] Fish for domestication: second-generation cultured silver pomfret juveniles, fork length 1±0.3cm;

[0040] The aquaculture water used for domestication has a water temperature of 20±1°C, a salinity of 25-30‰, and a pH of 7.6-8.2. The sand-filtered clean seawater has dissolved oxygen>10mg / L. The aquaculture water is sand-filtered and ultraviolet-sterilized. During the acclimatization process, the light intensity was controlled at 300-500Lx.

[0041] In the first stage, silver pomfret juveniles were cultured in three circular culture ponds with a diameter of 5m, and the water level in the culture ponds was 1.4m. The oxygenation method of the culture pond is central oxygenation, that is, the air stone is placed in the center of the culture pond to add oxygen. About 50,000 silver pomfrets were cultured in each...

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Abstract

The invention discloses a rapid domestication method for breeding silver pomfret juveniles, which includes four domestication stages. In the first stage, the domesticated silver pomfret gathers and swims in circles in a unified manner, so that fixed-point feeding can be performed in the second stage; Using artificial bait combined with natural bait to help juvenile silver pomfret fish become familiar with artificial feed; in stage 3, juvenile silver pomfret fish are already familiar with the feed. The feeding method was changed to the table feeding method, which further increased the feeding rate of the silver pomfret; in the fourth stage, the silver pomfret juveniles had basically been domesticated to the table feeding method, and had basically adapted to the artificial feed. Through the method of acclimating to regular swimming—familiarity with artificial feed—feeding artificial feed at the loading platform, juvenile silver pomfret have better adaptability to artificial feed and faster adaptation speed. The bait rate is lower than 2%, and the survival rate is increased from 50% to about 91%.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a rapid domestication method for cultivating silver pomfret juveniles. Background technique [0002] Silver pomfret is one of the main marine economic fishes in my country. Its meat is delicious and has high nutritional value and market demand. Therefore, domestic researchers began to carry out the artificial breeding of silver pomfret one after another. At present, Ningbo University has made a breakthrough in the breeding of silver pomfret and completed the large-scale breeding work. In the research process of silver pomfret breeding and breeding, it was found that the adult silver pomfret fish are always swimming in a fast and neat circle, and can be fed at fixed points. However, in the early stage of breeding silver pomfret juveniles, the silver pomfret juveniles swim more scatteredly and cannot be fed at fixed points, and the adaptability of silver pomfret to...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): A01K61/10A23K50/80A23K20/158A23K10/22A23K10/30A23K10/20
CPCA23K10/20A23K10/22A23K10/30A23K20/158A23K50/80A01K61/10Y02A40/81Y02A40/818
Inventor胡佳宝王亚军张曼李渊博王昆匡思雯孙弋博顾玮玮陶顺顺徐君芳
OwnerNINGBO UNIV