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Method for cultivating rotifers

A rotifer and culture tank technology, applied in fish farming, climate change adaptation, animal feed, etc., can solve the problems of low rotifer survival rate, weak rotifer physique, unstable yield, etc., and achieve low price and survival rate. High, avoid the effect of feeding too much or too little

Inactive Publication Date: 2018-06-08
广西海洋研究所有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for cultivating rotifers, which solves the problems of low rotifer survival rate, unstable yield and weak rotifer constitution in existing cultivation methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] 1. Set up the cultivation pool: the depth of the cultivation pool is 1.2 meters, the area is 16 square meters, the source of sea and fresh water is convenient, and the pool is full of air stones. After the cultivation pool is sterilized with bleach powder, the water is 1m deep, the salinity is adjusted to 18‰, and aeration is carried out. The dissolved oxygen is above 15mg / L, the pH is 7.8-8.0, and the water temperature is 28-30°C. A submersible pump with a power of 150w and a flow rate of 15000L / h is suspended beside the cement pool.

[0012] 2. Equipped with basic bait: 800g of marine red yeast, 3200g of fish meal, 1120g of cornstarch, 320g of sucrose, 160g of yeast extract, 3.2g of magnesium sulfate, 4.8g of potassium dihydrogen phosphate, 2400mL of seawater, after stirring evenly in the bucket, in 20- Cover and ferment at 30°C for 12 hours, put 2000g / bag in a 100-mesh tulle bag, tie the bag tightly and hang it evenly in the aerated culture tank, and hang 4 bags in to...

Embodiment 2

[0015] 1. Set up the culture pool: the culture pool is 1 meter deep, with an area of ​​25 square meters. The source of sea and fresh water is convenient. The pool is full of air stones. After the culture pool is sterilized with bleach powder, the water enters to a depth of 0.8m, and the salinity is adjusted to 15‰, and aeration is performed. , the dissolved oxygen is 20mg / L, the pH is 7.8-8.0, and the water temperature is 28-35°C. A submersible pump with a power of 150w and a flow rate of 15000L / h is suspended beside the cement pool.

[0016] 2. Equipped with basic bait: 800g of marine red yeast, 3200g of fish meal, 1120g of cornstarch, 320g of sucrose, 160g of yeast extract, 3.2g of magnesium sulfate, 4.8g of potassium dihydrogen phosphate, and 3200mL of seawater. Cover and ferment at 35°C for 14 hours, put 1000g / bag in a 100-mesh tulle bag, tie the bag tightly and hang it evenly in the aerated culture tank, a total of 8 bags are hung.

[0017] 3. Daily management: After hang...

Embodiment 3

[0019] 1. Set up the cultivation pool: the depth of the cultivation pool is 1.5 meters, the area is 25 square meters, the source of sea and fresh water is convenient, and the pool is full of air stones. After the cultivation pool is sterilized with bleaching powder, the water enters to a depth of 1.2m, adjusts the salinity to 30‰, and aerates , the dissolved oxygen is 3mg / L, the pH is 7.0-8.0, and the water temperature is 20-30°C. A submersible pump with a power of 150w and a flow rate of 15000L / h is suspended beside the cement pool.

[0020] 2. Equipped with basic bait: 2000g of marine red yeast, 8000g of fish meal, 2800g of cornstarch, 800g of sucrose, 400g of yeast extract, 8g of magnesium sulfate, 12g of potassium dihydrogen phosphate, 6000mL of seawater, stir well in the bucket, and put them at 20-30℃ Cover and ferment for about 12 hours, put 2000g / bag in a 100-mesh tulle bag, tie the bag tightly and hang it evenly in the aerated culture tank, and hang 9 bags in total.

...

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Abstract

The invention discloses a method for cultivating rotifers. The method disclosed by the invention comprises the steps: arranging a cultivating tank according to the rotifer growing environment; evenlymixing yeast, fish meal, starch, yeast cream, saccharose, magnesium sulfate, monopotassium phosphate and water according to a certain proportion; fermenting about 12h under a certain temperature; after basic bait is fermented, filling a bolting silk mesh bag with the basic bait and hanging in cultivating tank water; adding photosynthetic bacteria into the tank; cultivating for 5 to 8 days from aninoculation day; harvesting when the rotifer density reaches 500 per milliliter or more; in the period, timely adding the bait according to a rotifer breeding speed and a residual bait amount in the mesh bag. The hanging bag cultivation mode avoids the phenomenon that the bait feeding amount is too much or too little; the raw materials are prepared into soft lumps by a method that the yeast and the fish meal are fermented, so that rotifer nutrition enrichment caused by single yeast nutrition is avoided; nutritional ingredients of the basic bait fermented by the yeast can be converted into nutrient substances of micromolecular protein peptide and the like; thus, the basic bait is easy for rotifers to absorb, bait nutrition is comprehensive, a utilization rate is high, and the cultivated rotifers have the advantages of strong physique, high survival rate and stable yield.

Description

technical field [0001] The invention relates to a method for cultivating rotifers, in particular to a simple, rapid and stable method for cultivating Brachionus rugosa by using yeast to ferment fish meal, and belongs to the technical field of aquaculture. Background technique [0002] Brachionus rugosa is a small multicellular animal widely distributed in brackish water and marine waters in temperate and tropical regions. Brachionus rugosa has the characteristics of moderate size, comprehensive nutrition, and rapid reproduction, making it an indispensable early biological opening bait for more than 90% of fish, shrimp, crab and other aquatic economic animal seedlings. [0003] At present, the cultivation of rotifers in aquatic seed production mainly includes methods such as outdoor earthen pond cultivation, indoor cement pond cultivation and continuous cultivation in factory equipment. Earthen pond culture generally uses animal manure, chemical fertilizers, miscellaneous fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/20A23K50/80A23K10/12A23K10/22A23K20/163A23K10/16A23K20/26
CPCA01K61/20A23K10/12A23K10/16A23K10/22A23K20/163A23K20/26A23K50/80Y02A40/818
Inventor 赵艳飞黄凌光王贤丰宋志飞钟声平
Owner 广西海洋研究所有限责任公司
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