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Artificial culture method of breams

A breeding method and technology for bream, which are applied in the field of aquaculture, can solve the problems that the feed digestion and absorption rate needs to be improved, the disinfection of fish ponds is unclear, and are not available, so as to enhance the immunity of fish fry, promote the synthesis of protein in the body, and promote the growth of animals. Effect

Inactive Publication Date: 2019-03-19
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The artificial breeding method of bream provided by the invention adds additives to the compound feed, which has the effect of attracting food and promoting growth. The source of the additive raw material is stable, which can meet the smell and taste requirements of bream for the compound feed, and obviously speed up the feeding speed and improve the feeding rate. However, the digestion and absorption rate of the feed in this invention needs to be improved, and the feed additive does not have the effect of promoting protein synthesis in the body; secondly, the invention is not clear about the disinfection of fish ponds

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The artificial culture method of bream comprises the following steps:

[0032] Step 1. Pond selection: The pond requires a flat bottom, shallow silt, good water quality, and convenient irrigation and drainage; the pond is an oval pond of 3 acres, and the depth of the pond is 1.6m; set up 3 microporous aerators per acre to dissolve Oxygen up to 4mg / L;

[0033] Step 2. Pond preparation: Drain the pond water 15 days before breeding, and naturally kill parasites, bacteria and other disease organisms through sunlight; filter with a 300-mesh screen 3 days before breeding, and treat the influent with 0.1ppm chlorine dioxide , and apply 2 kg of urea and 0.8 kg of phosphate fertilizer per mu in the pond;

[0034] Step 3, stocking fry: bream and a small amount of crucian carp and grass carp are polycultured, and the mixed mantissa ratio of bream and crucian carp and grass carp is 5:1:1;

[0035] Step 4. Feeding management: feed the bream compound feed to the fry; adjust the pro...

Embodiment 2

[0047] Photosynthetic bacteria adopt Rhodopseudomonas sphaericus;

[0048] Cell membrane vesicles prepared from endothelial cells were used for cysteamine hydrochloride-coated biofilms;

[0049] All the other parts are completely consistent with Example 1.

Embodiment 3

[0057] Carry out the bream culture experiment, experiment is set 6 treatment groups, are respectively control group, embodiment 1-2, comparative example 1-3; The bream fry that size is similar is cultivated in the same pond, is divided into 6 ponds, There were 100 bream fry in each pond; bait was fed twice a day, and the amount of bait fed was to ensure that the bream was full; in the control group, the fish ponds were disinfected with general disinfectant and no photosynthetic bacteria were inoculated. The bream feed does not contain the food attractant composition of the present invention; the experimental period is 30 days, and after the experiment ends, the growth situation and the immune situation of the fry are measured, as shown in table 1; the mortality rate and the immune protection rate of each group are calculated, and the immune The protection rate is calculated according to the following formula:

[0058] Immune protection rate=[1-(immune group mortality / control g...

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Abstract

The invention provides an artificial culture method of breams, and belongs to the field of aquaculture, the method comprises pond selection, pond preparation, fry stocking, feeding management and water quality management; photosynthetic bacteria are inoculated in a pond before stocking fries, wherein the photosynthetic bacteria are obtained by a gradient cultivation method; the bream fries are fedwith a compound feed during culture, the compound feed comprises a phagostimulant, the cysteamine hydrochloride in the phagostimulant is subjected to biological membrane coating after the following pretreatment: the cysteamine hydrochloride is dissolved in an alkaline mixed solution containing beta-cyclodextrin and chitosan, reacting, filtering, washing, and drying are carried out. According to the artificial culture method, the bream feed has good palatability, high digestibility and high safety, is favorable for enhancing the feeding desire of the breams and increasing the feeding amount ofthe breams, and promotes the growth of the breams; the photosynthetic bacteria are inoculated to the bream culture pond, so that the water quality can be purified, the immunity of the fries can be enhanced, and the survival rate of the fries can be improved.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a method for artificial breeding of bream. Background technique [0002] Bream, also known as Wuchang fish, is more suitable for living in clean water. It is mainly distributed in medium-sized lakes attached to the middle and lower reaches of the Yangtze River in China. Because of its tender meat and delicious taste, it is one of the main freshwater farmed fish in China. Bream grows rapidly, has strong adaptability, wide appetite, low cost, high output, and large market demand, and is favored by farmers. [0003] Traditional farmed fish (such as grass carp, carp, bream, etc.) due to the continuous increase in aquaculture production and the popularity of consumption, with the development of the market economy, their prices have declined, resulting in a decline in the profits of farmers and frustration in breeding enthusiasm. In the process of freshwater fish farming, the ...

Claims

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Application Information

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IPC IPC(8): A01K61/10A01K61/13A23K20/142A23K10/37A23K50/80C12N1/20C12R1/01
CPCA23K10/37A23K20/142A23K50/80A01K61/10A01K61/13C12N1/20Y02P60/87Y02A40/81Y02A40/818
Inventor 武敏敏张建设胡利腾
Owner ZHEJIANG OCEAN UNIV
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