CN112293320A

CN112293320A - Method for breeding prawns in zebra by using idle river crab seedling culture soil pond

Info

Publication number: CN112293320A
Application number: CN202011183962.7A
Authority: CN
Inventors: 张鹏; 张家胜; 於叶兵; 吕富
Original assignee: Sheyang Zhangpeng Aquatic Breeding Co ltd
Current assignee: Sheyang Zhangpeng Aquatic Breeding Co ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-02-02

Abstract

A method for cultivating prawns in an idle river crab seedling culture soil pond, belonging to the field of aquatic animal cultivation. In the last ten days of May, on the day of fishing out and desalting the river crab megalops, the water level of the seedling soil pond is reduced to 1.2-1.5m, and the whole pond is disinfected by bleaching powder with the dosage of 20-40ppm in the latest day. After fertilizing with water, breeding 1-2 ten thousand prawn seedlings through marked thick spotted-spots with body length of 1.2-1.5cm per mu. Regularly feeding, changing water, starting an aerator, supplementing calcium, applying probiotics and the like during the culture period. Aiming at the characteristic that the utilization rate of the river crab after the breeding in the soil pond is not high, the utilization rate and the benefit of the pond are improved by breeding the high-value penaeus monodon, and the effect is obvious.

Description

Method for breeding prawns in zebra by using idle river crab seedling culture soil pond

Technical Field

The invention belongs to the field of aquaculture, and particularly relates to a method for breeding penaeus monodon by using an idle river crab seedling culture soil pond.

Background

River crab soil pond seedling raising is mainly concentrated in the Yangyang county and the east county in the Jiangsu area, and the area is about 5 ten thousand mu. The soil pond seedling raising time is from the pond cleaning in the first 11 months to the large-eye larva pulling out and desalting in the middle and upper ten days of the next 5 months. The soil pond is in an idle state from the top ten days to the bottom 10 months in 5 months, part of river crab breeding farms can breed the south white shrimps at low density, no fishing medicines such as microbial agents and the like are used in the breeding process, the yield per mu is from several jin to tens jin, and the overall benefit is low. The penaeus monodon is big in size and delicious in meat quality, and is a fine product in the penaeus monodon. At present, the mode of intensive culture of penaeus monodon in a river crab seedling culture soil pond in Jiangsu areas in idle seasons is few.

Disclosure of Invention

The invention aims to solve the technical problem of providing a method for culturing penaeus monodon by utilizing an idle river crab seedling culture soil pond, and greatly improving the overall utilization rate and benefit of the river crab seedling culture pond.

In order to realize the aim of the invention, the method for cultivating the penaeus monodon by utilizing the idle river crab seedling culture soil pond comprises the following steps:

in the last ten days of May, on the day of fishing out and desalting the river crab megalops, the water level of the seedling soil pond is reduced to 1.2-1.5m, and on the latest day of the day, the whole pond is disinfected by bleaching powder to kill the residual river crab megalops and other harmful organisms, wherein the dosage of the bleaching powder is 20-40 ppm.

After 5-7 days of disinfection by bleaching powder, spraying commercial amino acid fertilizer in the whole pond, wherein the dosage of the amino acid fertilizer refers to the specification, when the transparency of water is 30-40cm, breeding the prawn larvae which pass through the marked macrobrachium nipponense in the upper wind gap of the pond, and the length of the larvae is 1.2-1.5cm, and detecting that prawn White Spot Syndrome Virus (WSSV), Infectious Hypodermal and Hematopoietic Necrosis Virus (IHHNV), intestinal microsporidia (EHP), suing nodavirus (CMNV) and AHPND-induced vibrio parahaemolyticus (VPAHPND) are negative. The stocking density of the shrimp seedlings is 1-2 ten thousand tails per mu.

The waterwheel type aerator is equipped according to the standard that the power of 0.5-1.5kw is equipped on the water surface per mu. In 5-6 months, 14 pm on a sunny day: 00-15: 00 start up for one hour. 7-9 months, except for one hour of starting up in the afternoon on a sunny day, 23: 00 start-up to 6 in the next morning: 00.

feeding for 4 times every day, wherein the time is 6: 00-7: 00. 11: 00-12: 00. 17: 00-18: 00 and 22: 00-23: 00. the feeding amount in the evening and at night accounts for about 60 percent of the feeding amount in the whole day. Feeding along the periphery of the pond edge.

And sprinkling the microecologics into the pond every other week during the culture period, wherein the dosage of the microecologics refers to the specification. Spraying commercial calcium preparation in the whole pond 1-3 days before the first and fifteenth days of the lunar calendar, wherein the dosage of the calcium preparation refers to the instruction book.

The invention has the following beneficial effects:

the river crab seedling culture soil pond provided by the invention is used for culturing the penaeus monodon after disinfection treatment according to the method, so that the culture benefit can be obviously improved.

The specific implementation mode is as follows:

the present invention is described in further detail below.

Example 1

And (3) shooting sun, namely, a river crab seedling culture soil pond, wherein the area is 7 mu, 5 months and 10 days in 2019, the daphnia-shaped larvae of the river crab become megalops larvae, and the river crab is fished in the whole pond by pulling a net until the river crab is desalinated in a cement desalting pond. After the crab seedlings are caught, immediately draining the pond water from the water depth of 3m to 1.2 m.

And 5.10 days, disinfecting the whole pool by bleaching powder, wherein the dosage of the bleaching powder is 40 ppm.

And 5.15 days, sprinkling commercial amino acid fertilizer in the whole pond, wherein the dosage of the amino acid fertilizer refers to the specification. 5.20 days, stocking the pond with coarse mottle prawn fries at the wind gap, wherein the stocking density is 1.5 ten thousand tails/mu, the fry body length is 1.5cm, and the prawn fries are detected to be negative by detecting prawn White Spot Syndrome Virus (WSSV), infectious subcutaneous and hematopoietic necrosis virus (IHHNV), intestinal microsporidian (EHP), Cocunea stewartii virus (CMNV) and AHPND-causing vibrio parahaemolyticus (VPPND).

The whole pool is provided with 3 waterwheel type oxygen increasing machines with 2.2 kw. In 5-6 months, 14 pm on a sunny day: 00-15: 00 start up for one hour. 7-9 months, except for one hour of starting up in the afternoon on a sunny day, 23: 00 start-up to 6 in the next morning: 00.

feeding for 4 times every day, wherein the time is 6: 30. 11: 00. 17: 00 and 23: 00. the feeding amount in the evening and at night accounts for about 60 percent of the feeding amount in the whole day. Feeding along the periphery of the pond edge. Feeding is not carried out in rainy days, and feeding is carried out in a halved way in the molting peak period.

During the culture period, the bacillus, the EM and the photosynthetic bacteria are splashed in the whole pond every other week, and the related dosage refers to the specification. Spraying commercial calcium preparation in the whole pond 1-3 days before the first and fifteenth days of the lunar calendar, wherein the dosage of the calcium preparation refers to the instruction book.

And starting to catch by using a large-eye ground cage after 9 months and 19 days, and finishing catching for one week. The yield of the penaeus monodon is 195kg per mu, the specification is 30-40 tails/kg, and the benefit is far better than that of the mode of only roughly culturing the penaeus vannamei boone.

Example 2

And (3) shooting sun, namely, using a river crab seedling culture soil pond, wherein the area is 5 mu, and 5 months and 12 days in 2019, the daphnia-shaped larvae of the river crabs become megalops, and on the 7 th day, pulling the net in the whole pond to catch the larvae until the larvae are desalinated in a cement desalting pond. After the crab seedlings are caught, immediately draining the pond water from the water depth of 3m to 1.5 m.

And 5.13 days, disinfecting the whole pool by using bleaching powder, wherein the using amount of the bleaching powder is 30 ppm.

And 5.20 days, sprinkling commercial amino acid fertilizer in the whole pond, wherein the dosage of the amino acid fertilizer refers to the specification. 5.26 days, stocking the pond with coarse spotted prawn fries at the wind gap, wherein the stocking density is 2 ten thousand tails/mu, the length of the fry is 1.5cm, and the prawn fries are detected to be negative by detecting prawn White Spot Syndrome Virus (WSSV), Infectious Hypodermal and Hematopoietic Necrosis Virus (IHHNV), intestinal microsporidian (EHP), Cocunea stewartii virus (CMNV) and AHPND-causing vibrio parahaemolyticus (VPAHPND).

The whole pool is provided with 2 waterwheel type oxygen increasing machines with 2.2 kw. In 5-6 months, 14 pm on a sunny day: 00-15: 00 start up for one hour. 7-9 months, except for one hour of starting up in the afternoon on a sunny day, 23: 00 start-up to 6 in the next morning: 00.

Starting to catch by using a large-eye ground cage after 20 days after 9 months, and finishing one week of catching. The yield of the penaeus monodon is 215kg per mu, the specification is 30-40 tails/kg, and the benefit is far better than that of the mode of only roughly culturing the penaeus vannamei boone.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for culturing prawns in a pond by utilizing free river crab seedling culture soil is characterized in that in the first ten days of May, on the day of fishing out and desalting river crab megalops, the water level of the seedling culture soil pond is reduced to 1.2-1.5m, the pond is disinfected by bleaching powder in the latest second day, and the residual river crab megalops and other harmful organisms are killed, wherein the dosage of the bleaching powder is 20-40 ppm.

2. The method according to claim 1, wherein commercial amino acid fertilizers are sprinkled on the whole pond after 5-7 days of disinfection by bleaching powder, the dosage of the amino acid fertilizers refers to the instruction, when the transparency of water body is 30-40cm, the prawn larvae which pass through the marked larvae are bred on the wind gap of the pond, the body length is 1.2-1.5cm, the prawn White Spot Syndrome Virus (WSSV), Infectious Hypodermal and Hematopoietic Necrosis Virus (IHHNV), intestinal microsporidia (EHP), striae cutanea village virus (CMNV) and AHPND parahaemolyticus (VPAHPND) are detected to be negative, and the breeding density of the prawn larvae is 1-2 kilo/mu.

3. The method for cultivating the prawns in the idle river crab seedling culture soil pond according to the claim 1, characterized in that a waterwheel type aerator is arranged according to the standard of 0.5-1.5kw power per mu of water surface, 5-6 months, 14 pm in sunny days: 00-15: 00 starting up for one hour in 7-9 months, except starting up for one hour in the afternoon on a sunny day, 23: 00 start-up to 6 in the next morning: 00.

4. the method for cultivating the Penaeus monodon by using the vacant river crab seedling culture soil pond as claimed in claim 1, wherein the feeding is performed 4 times a day for 6: 00-7: 00. 11: 00-12: 00. 17: 00-18: 00 and 22: 00-23: 00; the feeding amount in the evening and at night accounts for about 60% of the feeding amount in the whole day; feeding along the periphery of the pond edge.

5. The method for cultivating the Penaeus monodon by using the vacant river crab seedling culture soil pond according to claim 1, wherein the microecologics are sprinkled in the whole pond every other week during the cultivation period, and the dosage of the microecologics is referred to the instruction book; spraying commercial calcium preparation in the whole pond 1-3 days before the first and fifteenth days of the lunar calendar, wherein the dosage of the calcium preparation refers to the instruction book.