CN104221974A

CN104221974A - Shrimp culturing method

Info

Publication number: CN104221974A
Application number: CN201410538518.0A
Authority: CN
Inventors: 石日福; 郑光良
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-10-14
Filing date: 2014-10-14
Publication date: 2014-12-24

Abstract

The invention discloses a shrimp culturing method. The shrimp culturing method comprises the following steps that (1) an aquaculture pond is prepared according to a conventional culturing method, and shrimp seeds are thrown into the aquaculture pond according to a conventional density; (2) 10 kilograms to 20 kilograms of bioflocculation provenance is poured into each mu every day when the ages of the shrimps are smaller than one month, and 20 kilograms to 30 kilograms of bioflocculation provenance is poured into each mu every day when the ages of the shrimps are larger than one month; (3) a water bottom aeration machine is used for oxygenation in the whole culturing process. The method for preparing the bioflocculation provenance comprises the steps that brown sugar, rice bran and feed additives are evenly mixed and then are added to clean fresh water to be evenly stirred, sealing is conducted, fermentation is conducted for three to four days at the temperature of 25-32 DEG C, and then the bioflocculation provenance is obtained, wherein the weight ratio of the clean fresh water, to the brown sugar, to the rice bran and to the feed additives is 250:5-8:30-40:2-3. By the adoption of the shrimp culturing method, the feed coefficient of shrimp culturing ranges from 0.7 to 0.8; compared with traditional culturing feed, the growing period of the shrimps cultured according to the method is shortened by 15 days to 20 days under the condition that the adult shrimps are obtained.

Description

A kind of prawn culturing method

Technical field

What the present invention relates to is a kind of prawn culturing method, belongs to mariculture technology field.

Background technology

In mariculture, the added value of cultured prawn is larger, but the risk of cultivation is also larger, this is because prawn is in breeding process, as easy as rolling off a log because the factor of breeding environment, feed for nursing and feeding patterns, affect the growth of prawn, cause aquaculture cost too high.At present, the cultural method of prawn routine, nothing more than feed of throwing something and feeding, is refreshed the water periodically, and keep the water environment being applicable to prawn growth, the cultivation of this pattern belongs to traditional cultural method.The feed coefficient of such cultural method is all higher, only have the throwing of 20% ~ 30% to raise protein and be converted to prawn food, major part can not be utilized and be present in breeding water body, therefore the feed coefficient of traditional extra large shrimp aquaculture method is 1.2-1.6, and namely prawn often grows the feed that 1 kilogram needs 1.2-1.6 kilogram.In addition, when cultured prawn, due to the excreta of prawn, residual bait often causes the deterioration of cultivate water, so need to change water in a large number on time, prawn just can be made to grow under suitable living environment, and the prawn excreta of traditional cultural method and swill cannot be utilized, and therefore rate of water exchange is higher, change water frequent, cause aquaculture cost too high, produce the aquaculture wastewater being rich in organic matter in a large number simultaneously and be discharged into sea, thus cause the generation of red tide of sea.The current whole people advocate thriftiness environmental protection situation under, high cost just means that the market competitiveness reduces, economic benefit reduce, contaminated environment must not be inconsistent with national conditions.Therefore, study a kind of reduce feed coefficient, fully effectively utilize organic matter in cultivation and reduce aquaculture wastewater discharge cultural method, for raising the market competitiveness of cultured prawn and the sustainable development of whole shrimp culture industry be necessary.

Summary of the invention

Technical problem to be solved by this invention, overcome in existing prawn culturing method exactly, feed coefficient is too high, the organic matter in breeding environment and residual bait can not be made full use of, the deficiency of high cost, there is provided and can reduce feed coefficient, reduce aquaculture wastewater discharge, make full use of a kind of organic prawn culturing method in breeding environment.

Above-mentioned technical problem to be solved, is achieved through the following technical solutions, a kind of prawn culturing method, comprises following concrete technical step:

(1) cultural method conveniently prepares cultivating pool, throws in density routinely and throws in shrimp seedling;

(2) below prawn one monthly age according to the amount of 10-20 kg/day/mu, bioflocculation provenance of splashing, time more than prawn one monthly age, to splash bioflocculation provenance by the amount of 20-30 kg/day/mu.

(3) whole breeding process is omnidistance with the use of water-bed aerator oxygenation;

The preparation method of described bioflocculation provenance is: the ratio according to the weight ratio of clean fresh water, brown sugar, rice bran and feed addictive being 250:5-8:30-40:2-3, get brown sugar, rice bran and feed addictive to mix, be added to the water and stir, sealing, at the environment bottom fermentation 3-4 days that temperature is 25-32 DEG C, obtain bioflocculation provenance.

Described feed addictive refer to containing 1-2 10,000,000 bacilluss/gram feed addictive;

Described water-bed aerator oxygenation refers to by fan blower and aeration plate directly to supplemental oxygen at the bottom of culturing pool.

Take the present invention of above-mentioned measure, in the whole process of cultured prawn, all adopt bioflocculation provenance of the present invention, after throw in bioflocculation provenance in cultivating pool, bioflocculation provenance is rapidly the suspension in shrimp culture pond, the metabolite of organic matter and prawn absorbs solidification and utilizes, and be converted into self intrinsic thing of bacterium, form solidifying floc sedimentation, solidifying floc sedimentation gets up at the effect low suspension of water-bed oxygenation gas explosion, shrimp is allowed to take food, the C/N ratio of breeding water body can be regulated by such mode, keep the breeding environment of breeding water body, reduce rate of water exchange, reduce and change waterside number and quantity of exchanged water, thus improve cultivation water environment, protect the overall situation of periphery.Take the feed coefficient of cultural method of the present invention to be 0.7-0.8, compared with traditional cultural method, when supporting equally to adult shrimp, this method shortens 15-20 days in vegetative period.

Embodiment

Embodiment 1

(1) bioflocculation provenance preparation: get 500 kilograms of seawater, 10 kilograms of brown sugar, 60 kilograms of rice brans and 4 kilograms containing 1-2 10,000,000 bacilluss/gram feed addictive, the trade name of described feed addictive is fast dotey, manufacturer foretells honeybee (North Sea) aquatic feeds Co., Ltd, get brown sugar, rice bran and feed addictive to mix, add in clean fresh water and stir, sealing, is the environment bottom fermentation 3 to 4 days of 25 DEG C to 33 DEG C in temperature, obtains bioflocculation provenance;

(2) cultural method: in five mu of extra large shrimp ponds of cultivation, method routinely prepares cultivating pool, input density routinely throws in white leg Shrimp seedling, during cultivation except use bioflocculation provenance is different from conventional method, all the other methods are identical with conventional cultivation method, when shrimp seedling cultivated below the monthly age, throw in bioflocculation provenance 100 kg/day, and whole process carries out water-bed gas explosion oxygenation.When prawn culturing-3 monthly age of January, throw in bioflocculation provenance 200 kg/day, and whole process carries out water-bed gas explosion oxygenation.

Embodiment 2

(1) bioflocculation provenance preparation: get 500 kilograms of seawater, 16 kilograms of brown sugar, 80 kilograms of rice brans and 6 kilograms containing 1-2 10,000,000 bacilluss/gram feed addictive, the trade name of described feed addictive is fast dotey, manufacturer foretells honeybee (North Sea) aquatic feeds Co., Ltd, get brown sugar, rice bran and feed addictive to mix, add in clean fresh water and stir, sealing, is the environment bottom fermentation 3 days of 32 DEG C in temperature, obtains bioflocculation provenance;

(2) cultural method is identical with embodiment 1.

Embodiment 3

(1) bioflocculation provenance preparation: get 500 kilograms of seawater, 13 kilograms of brown sugar, 70 kilograms of rice brans and 5 kilograms containing 1-2 10,000,000 bacilluss/gram feed addictive, the trade name of described feed addictive is fast dotey, manufacturer foretells honeybee (North Sea) aquatic feeds Co., Ltd, get brown sugar, rice bran and feed addictive to mix, add in clean fresh water and stir, sealing, is the environment bottom fermentation 4 days of 30 DEG C in temperature, obtains bioflocculation provenance;

(2) cultural method is identical with embodiment 1.

Claims

1. a prawn culturing method, is characterized in that described method comprises following concrete technical step:

(2) below prawn one monthly age according to the amount of 10-20 kg/day/mu, bioflocculation provenance of splashing, time more than prawn one monthly age, to splash bioflocculation provenance by the amount of 20-30 kg/day/mu;

The preparation method of described bioflocculation provenance is: the ratio according to the weight ratio of clean fresh water, brown sugar, rice bran and feed addictive being 250:5-8:30-40:2-3, get brown sugar, rice bran and feed addictive to mix, be added to the water and stir, sealing, at the environment bottom fermentation 3-4 days that temperature is 25-32 DEG C, obtain bioflocculation provenance;