Culture method for improving stress resistance of snakehead fry

A breeding method and anti-stress technology, applied in the fields of application, fish farming, climate change adaptation, etc., can solve the problems of affecting the growth speed of snakeheaded fish, affecting the survival rate, and poor stress resistance, so as to enhance immunity and improve growth Effect that performance, commerciality are high

Inactive Publication Date: 2017-03-29
王玉宽
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Problems solved by technology

[0002] Snakefish is a rare fish among freshwater fishes. It has high economic value and rich nutrition. Its protein content is higher than that of chicken and beef. It is a high-grade health food with delicious taste and comprehensive nutrition. It is very popular at home and abroad, but in the cultivation of snakeheaded fish, due to the incomplete development of physiological properties and the deterioration of the growth environment, the seedlings have poor stress resistance, which will not only seriously affect the growth speed of snakeheaded fish, but also affect their survival. rate, the nutrition and taste of snakeheaded fish will be affected accordingly, so it is necessary to study how to raise snakeheaded fish in juvenile stage

Method used

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Embodiment 1

[0013] A culture method for improving stress resistance of black carp larvae, comprising the following content:

[0014] (1) When the young fish are 3-7 days old, keep the dissolved oxygen in the culture pond at 7.2mg / L, the ammonia nitrogen content at 0.26mg / L, the hydrogen sulfide content at 0.34mg / L, and the nitrite content at 0.48mg / L , feeding open pellet feed with a diameter of 0.7 mm and a protein content of 70%;

[0015] (2) When the juvenile fish are 8-20 days old, keep the dissolved oxygen in the culture pond at 6.8mg / L, the ammonia nitrogen content at 0.24mg / L, the hydrogen sulfide content at 0.36mg / L, and the nitrite content at 0.62mg / L , feeding extruded pellet feed with a diameter of 1.4mm and a protein content of 54%;

[0016] (3) When the young fish are 21-35 days old, keep the dissolved oxygen in the culture pond at 6.4mg / L, the ammonia nitrogen content at 0.2mg / L, the hydrogen sulfide content at 0.38mg / L, and the nitrite content at 0.58mg / L , fed fermented ...

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Abstract

The invention belongs to the technical field of aquaculture, and particularly relates to a culture method for improving the stress resistance of snakehead fry. According to the culture method for improving the stress resistance of the snakehead fry, corresponding conditions and feed are controlled in corresponding stages of the fry. Compared with the prior art, the culture method for improving the stress resistance of the snakehead fry has the following advantages that corresponding culture environments are controlled for culture ponds of the snakehead fry according to growing characteristics of the snakehead fry; the snakehead fry can absorb nutrients quickly through cooperation of the culture environments and the high-protein feed, the protein transfer ability is improved, immunity is reinforced, and the growing property is improved; the snakehead fry can grow to 8-9 cm in the 35-day age, and 3-7 days are advanced compared with the prior art; after culture is completed, the snakehead fry are transferred into culture ponds for adult fish culture, quick adaption can be achieved, and the survival rate reaches 97% and over; after culture is completed, fish meat is rich in nutrient, good in taste, high in commodification and remarkable in economic benefits.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a culture method for improving stress resistance of snakehead young. Background technique [0002] Snakefish is a rare fish among freshwater fishes. It has high economic value and rich nutrition. Its protein content is higher than that of chicken and beef. It is a high-grade health food with delicious taste and comprehensive nutrition. It is very popular at home and abroad, but in the cultivation of snakeheaded fish, due to the incomplete development of physiological properties and the deterioration of the growth environment, the seedlings have poor stress resistance, which will not only seriously affect the growth speed of snakeheaded fish, but also affect their survival. The nutrition and taste of snakeheaded fish meat will be affected accordingly, so it is necessary to study how to raise snakeheaded fish in juvenile stage. Contents of the invention [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/10A23K50/80A23K10/12A23K20/153
CPCA01K61/00Y02A40/81
Inventor 王玉宽
Owner 王玉宽
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