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Larval micropterus salmoides food conversion domestication method

A technology of large mouth and sea bass, applied in the field of freshwater aquaculture, can solve the problems of difficult domestication, high price and high cost, and achieve the effects of improving the survival rate, reducing the cost of feeding and reducing the probability of disease.

Pending Publication Date: 2020-12-25
天津市水产研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is highly predatory and consumes a lot of food. Although there are commercial artificial baits developed for largemouth bass at present, they are mostly sold together with domesticated fish fry, and the price is relatively high. The cost of breeding remains high, while the artificial breeding of largemouth bass The most important point in perch conditions is bait. Generally, the bait of largemouth bass is rotifers. Although artificial bait reduces the cost of breeding, it is difficult to domesticate from natural bait to artificial bait. Therefore, there is an urgent need for a largemouth bass larvae to be domesticated. Methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A method for domesticating largemouth bass larvae by changing food, comprising the steps of:

[0036] 3) Choose to set up a domestication pool: choose a greenhouse cement pool, a black shading ceiling is installed above the greenhouse cement pool, a spotlight is installed in the middle of the black shading ceiling, and microporous aeration discs are arranged at the four corners of the bottom of the greenhouse cement pool;

[0037] 4) Preparation before stocking: a. Disinfection of water body: use iodine preparation to disinfect the breeding water body; b. Preparation of domestication bait: select live freshwater rotifers as natural bait; select high-density rotifers to be frozen into blocks as later feed reserve; Special artificial compound granular bait for black bass larvae;

[0038] 3) Throwing fry: Throw the fry of largemouth bass into the cement pool of the greenhouse, control the water temperature and dissolved oxygen in the water, maintain the circulation of the ...

Embodiment 2

[0050] A method for domesticating largemouth bass larvae by changing food, comprising the steps of:

[0051] 5) Choose to set up domestication pool: choose greenhouse cement pool, the size of the greenhouse is 30㎡ (length 5m, width 6m, height 1m), a black shading ceiling is set above the greenhouse cement pool, and a spotlight is set in the middle of the black shading ceiling. There is a lampshade, and the lampshade adopts a conical structure with good gathering effect. Microporous aeration discs are arranged at the four corners of the bottom of the cement pool of the greenhouse. A water outlet covered with a dense mesh is set in the center of the bottom of the cement pool of the greenhouse. On the top of the cement pool of the greenhouse, there is a The water inlet pipe, the water inlet pipe and the direction of gravity form an included angle α, 90°>α>0°, and the surface of the water inlet pipe is provided with a water outlet;

[0052] 6) Preparations before stocking: a. Wate...

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PUM

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Abstract

The invention relates to a larval micropterus salmoides food conversion domestication method. The method is characterized by comprising the following steps of (1) selecting and setting a domesticationpool; 2) preparing before stocking; 3) putting fries; 4) food conversion domestication, specifically, I, feeding live freshwater rotifers; II, after 1-3 days, mixing frozen rotifers with water for feeding; III, after 1-2 days, carrying out feeding through mixed feed, wherein the mixed feed is obtained by mixing the frozen rotifers with water and artificial compound granular baits according to themass ratio into paste, and sequentially reducing the number of the frozen rotifers according to the proportion of 1: 1, 0.75: 1 and 0.5: 1 until the frozen rotifers are completely replaced by the artificial compound granular baits; and IV, after 1-2 days, carrying out feeding for 1-2 days through the artificial compound granular baits; 5) daily management; and (6) putting fries into a pond, namely transferring the successfully-fed micropterus salmoides fries to an outdoor soil pond for culture, wherein the culture baits are all artificial compound granular baits. According to the method, through continuously adjusting the proportion of the mixed feed for food conversion domestication, the larval micropterus salmoides fries are induced to be fed with the artificial compound granular baitsin an initial stage, the feeding cost is reduced, and the survival rate in the domestication and food conversion process is increased.

Description

technical field [0001] The invention belongs to the technical field of freshwater aquaculture, and relates to the technology of changing food and domesticating fish, in particular to a method for changing food and domesticating largemouth bass larvae. Background technique [0002] Largemouth bass (Micropterus salmoides) belongs to the order Perciformes, the suborder Perciformes, the family Sunfish, and the genus Black Bass, also known as California bass and black bass. Because the water temperature of largemouth bass is suitable for hatching at 24-26℃, its breeding technology is still immature. The fry market has been monopolized by the south for a long time, especially the technical bottleneck of autumn breeding in the north is bait besides water temperature. Largemouth bass is an omnivorous carnivore. Sexual fish, the opening bait of newly hatched fry is rotifers and nauplii, juvenile fish mainly eat cladocera, juvenile fish mainly eat copepods. It is highly predatory and...

Claims

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Application Information

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IPC IPC(8): A01K61/10A23K50/80A23K10/20
CPCA23K10/20A23K50/80A01K61/10Y02A40/81
Inventor 吴会民戴媛媛李文雯王娜孟一耕董玉波王永辰刘健张韦王健缴建华刘克明
Owner 天津市水产研究所
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