CN105580756A

CN105580756A - Biological prevention and control method for controlling prawn diseases with clarias lazera

Info

Publication number: CN105580756A
Application number: CN201410562004.9A
Authority: CN
Inventors: 马晶晶
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-10-22
Filing date: 2014-10-22
Publication date: 2016-05-18

Abstract

The invention discloses a biological prevention and control method for controlling prawn diseases with clarias lazera. According to the method provided by the invention, clarias lazeras are added into a prawn culture zone, such that prawn infectious disease prevention is realized, and prawn survival rate is improved. With the method, prawn diseases can be prevented from spreading in healthy prawn populations; work load of artificially removing diseased and dead prawns is reduced; removing efficiency and culture success rate are improved; and higher economic benefit is brought to farmers.

Description

A kind of by the biological preventing control method of leather Clarias fuscus control shrimp disease

Technical field

The present invention relates to aquaculture field, be specifically related to a kind of by the biological preventing control method of leather Clarias fuscus control shrimp disease.

Background technology

Prawn is the pillar kind of China's culture fishery, and development in recent years is rapid, and to 130.3 ten thousand tons of cultured outputs in 2009, the output value exceedes 30,000,000,000 yuan; Foreign exchange earning occupies the Export of Chinese Aquatic Products amount of money the first, up to 12.3 hundred million dollars. Shrimp culture industry has become the Object Industry that China's agricultural structure is adjusted.

But shrimp disease problem remains the Main Bottleneck of shrimp culture industry development. The habit that the outbreak of epidemic of prawn communicable disease and prawn kill and devour mutually itself has certain relation. In prawn culturing process, due to environmental condition worsen cause indivedual physique a little less than, first the poor prawn of premunition fall ill even dead, the latter is preyed on by healthy individuals, thereby cause infectious agent (bacterium/virus) to be propagated in prawn colony, finally cause disease of prawn outbreak of epidemic. Thoroughly removing sick shrimp in shrimp culture pond how in time, becomes and controls one of key technology that disease of prawn breaks out.

Shrimp disease problem remains the Main Bottleneck of shrimp culture industry development. The major measure of current solution shrimp disease problem comprise improve prawn resistance against diseases, improve shrimp culture environment and cut off the route of transmission etc. of disease of prawn cause of disease several.

But, since prawn white spot syndrome outbreak of epidemic in 1992, worldwide still do not found a kind of practical ways thoroughly to prevent the outbreak of epidemic of disease of prawn. The outbreak of epidemic of disease of prawn causes to the shrimp culture industry of China

Serious economic loss, according to estimates, annual economic loss is up to 3,000,000,000 yuan.

The sick shrimp of removing in shrimp culture pond is a kind of method that prevents that disease of prawn from propagating. But the method for the sick shrimp of current artificial removing exists finds not in time, removes not thorough etc. limitation, is difficult to control breaking out of prawn communicable disease. In addition, also there are in the industry some prawn culturing patterns to adopt the method that fishes and shrimps are raised together with to carry out the prevention and control of prawn disease. But, due to not taking correct method in the selection of fish species, quantity, specification and release time, often can not receive desirable effect.

Summary of the invention

The object of the invention is to according to existing shrimps infectious disease transmission soon, the not thorough problem such as not in time of the removing of sick shrimp, provides a kind of cultural method that improves prawn survival rate.

The object of the invention is achieved by the following technical programs:

By a biological preventing control method for leather Clarias fuscus control shrimp disease, comprise the steps:

(1) in grow shrimp pond, throw in the shrimp seedling of 5 ~ 100,000 tail/mus;

(2) prawn culturing after 20,30 days every mu throw in 20,30 tails leather Clarias fuscus;

(3) cellar culture.

As a kind of preferred version, in said method, the body of described leather Clarias fuscus is long, and for 20cm is as a kind of preferred version, in said method, the water in described grow shrimp pond is degree of saltiness water, and salinity is 0,10.

As a kind of preferred version, in said method, described shrimp seedling is the shrimps that are suitable in salinity 0,10 interior cultivation. Further, described shrimps are that Environment of Litopenaeus vannamei Low, Penaeus monodon, Chinese prawn, Macrobrachium rosenbergii or base enclose shrimp.

The present invention, by a large amount of experiments, has considered the feeding habits of leather Clarias fuscus, and the transmissibility of prawn disease and current

The factors such as prawn culturing technology, have determined said method.

Compared with prior art, the present invention has following beneficial effect:

(1) experiment showed, that by a large amount of more than heterophagous 20cm leather Clarias fuscus is better in the disease of ingesting, effect weak, dead shrimp in shrimp culture pond;

(2) leather Clarias fuscus is cruised in shrimp pond, can find and feed into disease, weak, dead shrimp prior to healthy shrimp, can have and stop health

The shrimp disease shrimp that ingests, thus prawn disease spread and epidemic in healthy shoal of shrimps avoided;

(3) the leather Clarias fuscus shrimp that dies of illness of finding in time and ingest, has reduced and has manually patrolled the pool and remove the workload of the shrimp that dies of illness, has improved the efficiency of removing the shrimp that dies of illness, has improved cultivation success rate;

(4) utilize the outbreak of epidemic of removing from office Clarias fuscus prevention and control disease of prawn, reduced the use of various control shrimp disease medicines. Be conducive on the one hand the protection of ecological environment, be conducive on the other hand the raising of prawn quality;

(5) leather Clarias fuscus itself is also a kind of economic fish, throws in Egyptian Clarias fuscus provisions shrimp person and bring larger economic benefit in shrimp pond.

Detailed description of the invention

Further explain the present invention below in conjunction with embodiment, but embodiment does not limit in any form to the present invention.

Embodiment

L, the normal management method of contrasting prawn culturing, trained after water, throws in the shrimp seedling of 1.0cm left and right, every mu 5 ~ 100,000

Tail. Because leather Clarias fuscus is unsuitable for surviving in salinity is greater than 10 water body, so the salinity of breeding water body of the present invention

In 0,10 scopes. If the salinity of breeding water body is greater than 10, the method for available interpolation fresh water reduces salinity, by salinity control

In above-mentioned scope.

2, throw in leather Clarias fuscus in good time. Prawn culturing to 20, about 30 days, shrimp disease breaks out the Egyptian Clarias fuscus of front input. Often due to shrimp seedling itself, just extensive dead early stage in cultivation in breeding process, need not throw in before this leather Clarias fuscus. So when one cultivates by 20,30 days, after shrimp seedling is stable, then throw in leather Clarias fuscus; The leather Clarias fuscus quantity of throwing in is strict controlled in 20,30 tail/mus, because leather Clarias fuscus natural disposition is more violent, the shrimp alive of the some of also ingesting, so supply volume will strictly be controlled, unsuitable excessive input, in order to avoid grow shrimp survival rate problem less than normal while causing harvest; Because the growth of leather Clarias fuscus is rapid, while putting in a suitable place to breed, body reaches 20cm/ tail.

3, the Fu Xingshi of Fujian Province mono-cultivation company adopts this method to carry out prawn culturing. Many mu of prawn culturing field gross area l000, in mid or late April, 2010 starts to throw in Environment of Litopenaeus vannamei Low shrimp seedling, and the spacious 100,000 tail/mus of breeding density start to throw in 20 tails by every mu May, and the leather Clarias fuscus of the long 20cm of average body carries out the biological prevention and control of shrimp disease. Daily management routinely, starts lower gabion September and receives shrimp listing in batches, and substantially gather in the crops complete November. Prawn specification is 40,70 tails/kg. Whole audience prawn average product is about 600kg/ mu. Leather Clarias fuscus output is about 50kg/ mu. Within 2010, the whole audience does not have shrimp disease outbreak of epidemic.

Claims

1. a method of being removed from office Clarias fuscus and carried out prawn culturing by interpolation, is characterized in that described method comprises the steps:

(1) in grow shrimp pond, throw in the shrimp seedling of 5 ~ 100,000 tail/mus;

(3) cellar culture.

2. according to the method for removing from office Clarias fuscus and carry out prawn culturing described in claim l by interpolation, it is characterized in that the body of described leather Clarias fuscus long be 20cm.

3. according to the method for being removed from office Clarias fuscus and carried out prawn culturing described in claim l by interpolation, it is characterized in that the water in described grow shrimp pond is degree of saltiness water, salinity is 0,10.

4. according to the method for removing from office Clarias fuscus and carry out prawn culturing described in claim l by interpolation, it is characterized in that described shrimp seedling is the shrimps that are suitable in salinity 0,10 interior cultivation.

5. the method for being removed from office Clarias fuscus and carried out according to claim 4 prawn culturing by interpolation, is characterized in that described shrimps are that Environment of Litopenaeus vannamei Low, Penaeus monodon, Chinese prawn, Macrobrachium rosenbergii or base enclose shrimp.