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Sectional type rapid temporary culture method for grouper fries

A segmented, fry technology, applied in the field of grouper labelling, can solve problems such as difficult to control disease prevention, failure of grouper labelling, and great impact on the water environment, and is conducive to rapid growth, shortening the domestication time, The effect of short incubation time

Active Publication Date: 2021-07-20
广东海元农业科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a segmented fast method for marking grouper fry, so as to solve the problems in the prior art that the fry marking method is carried out in the same pond, which is difficult to tame the material, difficult to control disease prevention, and influence on the water environment. Large and juvenile fish eat the small ones, which leads to the failure of grouper marking or low yield

Method used

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  • Sectional type rapid temporary culture method for grouper fries
  • Sectional type rapid temporary culture method for grouper fries
  • Sectional type rapid temporary culture method for grouper fries

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Such as Figure 1 to Figure 3 , Embodiment 1 takes the tiger-dragon hybrid spot as the standard thick object, and concrete steps are as follows:

[0045] (A) Set up an indoor standard rough pool 1 to pretreat the facilities and seawater in the pool:

[0046] The indoor pool is a square cement pool with four corners of 5 meters x 5 meters. The depth of the pool is 1.0 meters, and the sewage outlet is in the center of the pool. Eight air stones are arranged around the pool. After adding 30cm of seawater, strong chlorine is added for disinfection. After cleaning the pool, fresh seawater is added. Convection water is used, and the water level is set at 15cm from the edge of the pool.

[0047] (B) Set the first stage of standard thick breeding net frame:

[0048] In the first stage, the cultivation net frame 2 adopts a circular net frame plastic with a diameter of 1.5 meters. The mesh is a rectangular mesh with a length of 1 cm and a width of 0.2 cm. The lower part is equ...

Embodiment 2

[0059] The steps and parameters of this embodiment are basically the same as those of Embodiment 1, except that the bold object is the red-spotted grouper. The cultivation time of the first stage is 12 days, and the cultivation time of the second stage is 33 days. 100,000 red-spotted grouper seedlings were selected, and about 80,000 red-spotted grouper seedlings with a size of 9-10 cm were bred through 45 days of standardization, and the survival rate reached 80.00%. The difference in the total incubation time is that the red-spotted grouper grows slower than the tiger-dragon hybrid.

Embodiment 3

[0061] The steps and parameters of this embodiment are basically the same as those in Example 1, the difference being that the bold object is the grouper, the cultivation time of the first stage is 9 days, and the cultivation time of the second stage is 20 days. A total of 130,000 9-10cm red-spotted grouper seedlings were cultivated through 29 days of standardization, and the survival rate reached 86.67%.

[0062] Through investigation, it is found that the survival rate of the existing grouper fry marking method that is not concentrated in the marking tank in sections is usually 60-70%, while the survival rate of the segmented marking method of the present invention is basically greater than 80%. Simultaneously, the cultivation time of existing grouper fry is usually 30~60 days (different according to different stone groupers), which is more than 25~45 days of the standard rough method of the present invention. It can be seen that the segmented coarse standard method can grea...

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Abstract

The invention discloses a sectional type rapid temporary culture method for grouper fries, which comprises the following steps: after primary screening of fries at the first stage, stocking the fries with different body lengths into different net frames; feeding fairy shrimps to the fries in the net frames and domesticating the fries until the feed of the fries is completely converted into artificial compound feed from fairy shrimps; and at the second stage, after the fry grow to the preset body length, transferring the fries from the net frames into a temporary culture pond to be cultured, and feeding the fries cultured in the temporary culture pond with artificial compound feed. According to the method, a sectional type temporary culture method is adopted, fry centralized domestication is completed in all the net frames at the first stage, the domestication time of artificial compound feed is greatly shortened, then fries with the body length reaching the preset body length are fed in the temporary culture pond at the second stage, the culture space is increased, rapid growth of grouper fries is facilitated, the fry culture time is further shortened, the whole fry culture time is shorter, and the yield per unit water body and the survival rate of the fries are higher.

Description

technical field [0001] The invention relates to the technical field of grouper fry marking, in particular to a segmented rapid marking method for grouper fry. Background technique [0002] Groupers belong to the order Perciformes, the suborder Percoidei, and the family Serranidae. Grouper meat is tender, rich in nutrition, low in fat and high in protein, and has become the darling of consumers and farmers. In recent years, due to excessive fishing near the shore, the production has dropped sharply, and the market is in short supply. Artificially cultured grouper has become the main source. Grouper has become an important cultured fish in the southern coast of my country, and it is expensive and has high economic value. [0003] The traditional method of standardizing the size of grouper fry is uniformly carried out in the cement pond, and it is difficult to train the material, because the grouper seedlings eat live before the white seedlings (fry just out of the pond or in...

Claims

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Application Information

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IPC IPC(8): A01K61/95A01K61/10A01K63/00A01K61/80
CPCA01K61/95A01K61/10A01K63/00A01K61/80Y02A40/81
Inventor 冯春元孙佩银王火洋王庆赵会宏高延飞
Owner 广东海元农业科技有限公司
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