CN110810293A - Shrimp larvae desalting method for penaeus vannamei boone - Google Patents

Abstract

The invention discloses a shrimp seed desalting method for penaeus vannamei boone, which comprises the steps of facility and equipment preparation in a production workshop, preparation of artificial seawater, cultivation of biological flocs, putting of the penaeus vannamei boone, daily bait feeding and desalting process management. The invention has the beneficial effects that: the shrimp larvae of the penaeus vannamei boone are desalted, and the desalting period is short; the desalinated penaeus vannamei boone has the advantages of short culture period, high yield, low cost, no hormone addition, greenness, environmental protection, delicious taste and fat and beautiful appearance.

Description

Shrimp larvae desalting method for penaeus vannamei boone

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of shrimp culture, in particular to a shrimp fry desalting method for penaeus vannamei boone.

[ background of the invention ]

The south America white prawn is originally produced in the Pacific coastal sea of south America, 1998 is introduced into the variety by the ocean research institute of Chinese academy of sciences, has the advantages of strong disease resistance, high yield, low cost, good meat quality, strong adaptability and the like, starts to be cultured in large areas in Jiangsu, Guangdong, Guangxi, Fujian, Hainan and other provinces of China, and obtains outstanding economic and social benefits.

However, the traditional culture of penaeus vannamei boone is difficult to realize freshwater culture.

[ summary of the invention ]

The invention discloses a method for desalting young shrimps of penaeus vannamei boone, which can solve the problems related to the background technology.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a shrimp larvae desalting method for Penaeus vannamei Boone comprises the following steps:

step one, arranging a cement pool which is 3.5 meters long, 3 meters wide and 1.2 meters deep and is provided with bottom drainage in a heat-insulation and top-shading greenhouse, and building a seedling collecting area in the middle of the cement pool;

secondly, heating equipment is arranged in the cement pool, so that the water temperature is ensured to be above 25 ℃, and the temperature difference between day and night is not more than 1 ℃;

step three, each cement pond is provided with a bottom oxygen increasing nanotube and communicated with oxygen increasing equipment, so that the oxygen increasing power of 20 watts per square culture water surface is ensured;

step four, removing alkali from the pond, adding underground water after cleaning, keeping the water depth at 80 cm, and heating to more than 25 ℃;

and step five, starting an aerator to aerate the water body, adding food-grade salt, adding food-grade magnesium sulfate heptahydrate, calcium chloride, potassium chloride and boric acid according to the proportion by taking the salt as a base number, wherein the salt: magnesium sulfate: calcium chloride: potassium chloride: boric acid is 100:30:5:3.5:0.3, sodium bicarbonate is used for regulating the total alkalinity to be more than 100 mg per liter, EDTA (ethylene diamine tetraacetic acid) 10PPM is used for removing heavy metal toxicity of the water body, 20PPM strong chlorine essence is used for disinfecting the water body for 24 hours, and finally sodium thiosulfate is used for removing residual chlorine to obtain artificial seawater;

putting 5PPM shrimp slices washed by a 100-mesh material rubbing bag into a water body, putting 5PPM freeze-dried EM (effective microorganisms) into the water body after putting a nitrogen source for 12 hours, putting 10PPM brown granulated sugar, and carrying out aeration and oxygenation cultivation for 48 hours to form biological flocs;

seventhly, introducing penaeus vannamei larvae with salinity of 10 lattices, putting the penaeus vannamei larvae into the artificial seawater in which the biological flocs are cultured, and putting water with the density of 5-10 thousand per cubic meter;

step eight, taking the shrimp slices as a main material, adding a small amount of BP, a vehicle element and multiple dimensions, feeding the shrimp fries into a pool, starting feeding at the beginning of feeding at the feeding amount of 0.5-1 g per ten thousand shrimp fries, then increasing the feeding amount by 10% -20% every day, feeding six meals every day, wherein the interval of every meal is 4 hours, observing whether residual bait exists half an hour before feeding every meal, and if yes, reducing the feeding amount and even stopping feeding for one meal;

step nine, detecting water quality indexes once a day, wherein the water quality indexes comprise ammonia nitrogen, nitrite, a pH value and total alkali, the ammonia nitrogen is controlled within 0.2PPM, the nitrite is controlled within 0.01PPM, the pH value is kept between 7.8 and 8.4, and the total alkali is kept above 100 milligrams per liter;

step ten, after the shrimp seeds are generally thrown for one or two days, the thrown shrimp seeds can begin to be desalinated after being recovered to be stable, a proper amount of treated underground water is slowly added every day, the water temperature is required to be above 25 ℃, the total alkalinity is above 100 mg per liter, heavy metal toxicity is removed by EDTA (ethylene diamine tetraacetic acid), the salinity reduced every day is not more than 2 grids, water needs to be drained and added every day after the water level of a cement pond rises to 1.1 m, 1PPM aquatic vitamin C and 3PPM multi-mineral are thrown before water is added every time, the stress reaction of the shrimp seeds in the process of desalination is reduced, trace elements needed by the growth of the shrimp seeds are supplemented, and the culture water body is desalinated to be close to.

The invention has the beneficial effects that: the shrimp larvae of the penaeus vannamei boone are desalted, and the desalting period is short; the desalinated penaeus vannamei boone has the advantages of short culture period, high yield, low cost, no hormone addition, greenness, environmental protection, delicious taste and fat and beautiful appearance.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a method for desalting young shrimps of penaeus vannamei boone, which comprises the following steps:

step one, arranging a cement pool which is 3.5 meters long, 3 meters wide and 1.2 meters deep and is provided with bottom drainage in a heat-insulation and top-shading greenhouse, and building a seedling collecting area in the middle of the cement pool;

secondly, heating equipment is arranged in the cement pool, so that the water temperature is ensured to be above 25 ℃, and the temperature difference between day and night is not more than 1 ℃;

step three, each cement pond is provided with a bottom oxygen increasing nanotube and communicated with oxygen increasing equipment, so that the oxygen increasing power of 20 watts per square culture water surface is ensured;

step four, removing alkali from the pond, adding underground water after cleaning, keeping the water depth at 80 cm, and heating to more than 25 ℃;

and step five, starting an aerator to aerate the water body, adding food-grade salt, adding food-grade magnesium sulfate heptahydrate, calcium chloride, potassium chloride and boric acid according to the proportion by taking the salt as a base number, wherein the salt: magnesium sulfate: calcium chloride: potassium chloride: boric acid is 100:30:5:3.5:0.3, sodium bicarbonate is used for regulating the total alkalinity to be more than 100 mg per liter, EDTA (ethylene diamine tetraacetic acid) 10PPM is used for removing heavy metal toxicity of the water body, 20PPM strong chlorine essence is used for disinfecting the water body for 24 hours, and finally sodium thiosulfate is used for removing residual chlorine to obtain artificial seawater;

putting 5PPM shrimp slices washed by a 100-mesh material rubbing bag into a water body, putting 5PPM freeze-dried EM (effective microorganisms) into the water body after putting a nitrogen source for 12 hours, putting 10PPM brown granulated sugar, and carrying out aeration and oxygenation cultivation for 48 hours to form biological flocs;

specifically, ammonia nitrogen and nitrite can be reduced by adding a carbon source and brown granulated sugar into the water body, and the same amount of brown granulated sugar in the total feed amount on the day of daily feeding can basically control the ammonia nitrogen and nitrite in the water body not to exceed the standard. The pH value is kept between 7.8 and 8.4 and can be adjusted by lime water. The total alkali is kept above 100 mg/L, and can be increased by adding dolomite powder.

Seventhly, introducing penaeus vannamei larvae with salinity of 10 lattices, putting the penaeus vannamei larvae into the artificial seawater in which the biological flocs are cultured, and putting water with the density of 5-10 thousand per cubic meter;

it should be further noted that the shrimp larvae must be detected before being released, and cannot carry white spot virus, taura syndrome virus, prawn enterosporidium, and the like.

Step eight, taking the shrimp slices as a main material, adding a small amount of BP, a vehicle element and multiple dimensions, feeding the shrimp fries into a pool, starting feeding at the beginning of feeding at the feeding amount of 0.5-1 g per ten thousand shrimp fries, then increasing the feeding amount by 10% -20% every day, feeding six meals every day, wherein the interval of every meal is 4 hours, observing whether residual bait exists half an hour before feeding every meal, and if yes, reducing the feeding amount and even stopping feeding for one meal;

step nine, detecting water quality indexes once a day, wherein the water quality indexes comprise ammonia nitrogen, nitrite, a pH value and total alkali, the ammonia nitrogen is controlled within 0.2PPM, the nitrite is controlled within 0.01PPM, the pH value is kept between 7.8 and 8.4, and the total alkali is kept above 100 milligrams per liter;

step ten, after the shrimp seeds are generally thrown for one or two days, the thrown shrimp seeds can begin to be desalinated after being recovered to be stable, a proper amount of treated underground water is slowly added every day, the water temperature is required to be above 25 ℃, the total alkalinity is above 100 mg per liter, heavy metal toxicity is removed by EDTA (ethylene diamine tetraacetic acid), the salinity reduced every day is not more than 2 grids, water needs to be drained and added every day after the water level of a cement pond rises to 1.1 m, 1PPM aquatic vitamin C and 3PPM multi-mineral are thrown before water is added every time, the stress reaction of the shrimp seeds in the process of desalination is reduced, trace elements needed by the growth of the shrimp seeds are supplemented, and the culture water body is desalinated to be close to.

It needs to be further explained that the whole desalting process has short period, and only needs 8 to 10 days.

The invention has the beneficial effects that: the shrimp larvae of the penaeus vannamei boone are desalted, and the desalting period is short; the desalinated penaeus vannamei boone has the advantages of short culture period, high yield, low cost, no hormone addition, greenness, environmental protection, delicious taste and fat and beautiful appearance.

While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the description and embodiments, which are fully applicable to various fields of endeavor for which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described without departing from the generic concept as defined by the claims and the equivalents thereof.

Claims (1)

1. A shrimp larvae desalting method for Penaeus vannamei Boone is characterized by comprising the following steps:

step one, arranging a cement pool which is 3.5 meters long, 3 meters wide and 1.2 meters deep and is provided with bottom drainage in a heat-insulation and top-shading greenhouse, and building a seedling collecting area in the middle of the cement pool;

secondly, heating equipment is arranged in the cement pool, so that the water temperature is ensured to be above 25 ℃, and the temperature difference between day and night is not more than 1 ℃;

step three, each cement pond is provided with a bottom oxygen increasing nanotube and communicated with oxygen increasing equipment, so that the oxygen increasing power of 20 watts per square culture water surface is ensured;

step four, removing alkali from the pond, adding underground water after cleaning, keeping the water depth at 80 cm, and heating to more than 25 ℃;

and step five, starting an aerator to aerate the water body, adding food-grade salt, adding food-grade magnesium sulfate heptahydrate, calcium chloride, potassium chloride and boric acid according to the proportion by taking the salt as a base number, wherein the salt: magnesium sulfate: calcium chloride: potassium chloride: boric acid is 100:30:5:3.5:0.3, sodium bicarbonate is used for regulating the total alkalinity to be more than 100 mg per liter, EDTA (ethylene diamine tetraacetic acid) 10PPM is used for removing heavy metal toxicity of the water body, 20PPM strong chlorine essence is used for disinfecting the water body for 24 hours, and finally sodium thiosulfate is used for removing residual chlorine to obtain artificial seawater;

putting 5PPM shrimp slices washed by a 100-mesh material rubbing bag into a water body, putting 5PPM freeze-dried EM (effective microorganisms) into the water body after putting a nitrogen source for 12 hours, putting 10PPM brown granulated sugar, and carrying out aeration and oxygenation cultivation for 48 hours to form biological flocs;

seventhly, introducing penaeus vannamei larvae with salinity of 10 lattices, putting the penaeus vannamei larvae into the artificial seawater in which the biological flocs are cultured, and putting water with the density of 5-10 thousand per cubic meter;

step eight, taking the shrimp slices as a main material, adding a small amount of BP, a vehicle element and multiple dimensions, feeding the shrimp fries into a pool, starting feeding at the beginning of feeding at the feeding amount of 0.5-1 g per ten thousand shrimp fries, then increasing the feeding amount by 10% -20% every day, feeding six meals every day, wherein the interval of every meal is 4 hours, observing whether residual bait exists half an hour before feeding every meal, and if yes, reducing the feeding amount and even stopping feeding for one meal;

step nine, detecting water quality indexes once a day, wherein the water quality indexes comprise ammonia nitrogen, nitrite, a pH value and total alkali, the ammonia nitrogen is controlled within 0.2PPM, the nitrite is controlled within 0.01PPM, the pH value is kept between 7.8 and 8.4, and the total alkali is kept above 100 milligrams per liter;

step ten, after the shrimp seeds are generally thrown for one or two days, the thrown shrimp seeds can begin to be desalinated after being recovered to be stable, a proper amount of treated underground water is slowly added every day, the water temperature is required to be above 25 ℃, the total alkalinity is above 100 mg per liter, heavy metal toxicity is removed by EDTA (ethylene diamine tetraacetic acid), the salinity reduced every day is not more than 2 grids, water needs to be drained and added every day after the water level of a cement pond rises to 1.1 m, 1PPM aquatic vitamin C and 3PPM multi-mineral are thrown before water is added every time, the stress reaction of the shrimp seeds in the process of desalination is reduced, trace elements needed by the growth of the shrimp seeds are supplemented, and the culture water body is desalinated to be close to.