Bait additive capable of increasing raised fry survival rate of epinephelus and use method thereof

An additive and a technology for grouper, which is applied in the field of bait additives for improving the survival rate of grouper seedlings, can solve the problems of hindering the industrial development of grouper breeding, the harm of aquatic animals, and the less application of astaxanthin, and reduce the Nerve necrosis virus, improve the survival rate of culture, the effect of natural origin

Inactive Publication Date: 2015-11-11
NINGDE NANHAI AQUATIC PRODS TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a bait additive for improving the survival rate of grouper seedlings and its use method, which overcomes the high mortality caused by the outbreak of diseases such as nerve necrosis virus from the harvesting stage to the young fish stage in the current grouper breeding process, thereby hindering The industrialization development of grouper aquaculture is hindered, and the application of astaxanthin in grouper aquaculture is still seldom, and artificially synthesized astaxanthin has certain harmful defects to aquatic animals. The raw Haematococcus pluvialis is transformed into red thick-walled spores, and then filtered and dried, and the feed additive made of vitamin-rich rice bran and its use method

Method used

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  • Bait additive capable of increasing raised fry survival rate of epinephelus and use method thereof
  • Bait additive capable of increasing raised fry survival rate of epinephelus and use method thereof
  • Bait additive capable of increasing raised fry survival rate of epinephelus and use method thereof

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Experimental program
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Effect test

Embodiment 1

[0017] (1) Preparation of bait additives: take Haematococcus pluvialis, transform it from green vegetative sporophyte into red sclerenchyma sporophyte rich in astaxanthin after being stressed, filter and dry, then grind into powder. Natural astaxanthin is prepared by mixing natural astaxanthin and rice bran at a ratio of 1:2. The content of natural astaxanthin can be 50mg / kg, 100mg / kg, 150mg / kg or 200mg / kg .

[0018] (2) Biological bait preparation: add the bait additive prepared in step (1) to the biological bait, and the 3-day-old biological bait, 6-day-old biological bait, 9-day-old biological bait, and 12-day-old biological bait are fertilized oysters respectively Eggs, rotifers, Artemia, and copepods, the above-mentioned biological bait was wrapped and fed with 100mL / kg fish oil. During this period, each experimental group was set up in three parallels, and a control group was set up. The control group was without any additives. Copepod bait.

[0019] (3) Feeding manage...

Embodiment 2

[0021] (1) Preparation of bait additives: take Haematococcus pluvialis, transform it from green vegetative sporophyte into red sclerenchyma sporophyte rich in astaxanthin after being stressed, filter and dry, then grind into powder. Natural astaxanthin is prepared by mixing natural astaxanthin and rice bran at a ratio of 1:2. The content of natural astaxanthin can be 50mg / kg, 100mg / kg, 150mg / kg or 200mg / kg .

[0022] (2) Preparation of soft pellet feed: add the bait additive prepared in step (1) into the soft pellet feed. During this period, three parallels were set up for each experimental group, and a control group was set up. The control group was soft pellet feed without any additives.

[0023] (3) Feeding management: During the experiment, the water temperature was maintained at 23.2-24.8°C, the salinity was maintained at 26.35, and the pH was maintained at 7.98-8.03, and the residual bait, feces, and dirt on the surface were removed every day, and observations were made....

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Abstract

The invention discloses a bait additive capable of increasing the raised fry survival rate of epinephelus and a use method thereof, and relates to the technical field of aquaculture baits. The bait additive is prepared from natural astaxanthin and rice bran according to the ratio of 1:2, wherein the content of the natural astaxanthin can be 50 mg / kg, 100 mg / kg, 150 mg / kg or 200 mg / kg. The use method of the bait additive comprises a feeding method for epinephelus from incubation to 30 days old, and a feeding method for epinephelus older than 30 days old. According to the invention, the raising survival rate of epinephelus is greatly increased, the cost is reduced, and the astaxanthin is natural in resource and nuisanceless, and has extremely high market popularization value.

Description

technical field [0001] The invention relates to the technical field of aquaculture bait, in particular to a bait additive and a use method for improving the survival rate of grouper seedlings. Background technique [0002] Grouper, belonging to the order Perciformes, is a large and medium-sized marine fish in warm water. Grouper is rich in nutrition, and the meat is tender and white, similar to chicken, and is known as "sea chicken". Grouper is a low-fat, high-protein high-quality edible fish, and it is one of the species with high economic value in aquaculture. However, for a long time, the seedlings required for grouper farming have mainly relied on natural harvesting. In recent years, the amount of wild grouper resources has declined rapidly, and the scale of farming has been greatly restricted. In order to solve the problem of seedlings, domestic and foreign scholars have carried out a lot of research. Japan began to study the artificial breeding of grouper as early as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/18A23K1/14A23K1/16
Inventor 彭立成周绍峰谢友亮周瑞发黄伟卿阮经盛
Owner NINGDE NANHAI AQUATIC PRODS TECH
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