Early warning method of the disease of artificial breeding type large yellow croaker

A technology for disease occurrence and large yellow croaker, applied in fish farming, application, climate change adaptation, etc., can solve the problems of high breeding density, short drug action time, increased breeding costs and labor, etc., so as to improve economic benefits and reduce large The occurrence of area disease, the effect of saving breeding cost and labor force

Inactive Publication Date: 2009-07-15
NINGBO UNIV
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Problems solved by technology

Due to the high density of cage culture and the rapid transmission of diseases, when the disease is discovered, many diseased fish have lost their ability to feed and cannot be given medicine, so drug treatment has little effect; method to prevent the occurrence of diseases of large yellow croaker, but due to the large range of cage culture and the short action time of drugs, this kind of blind drug use not only cannot receive real preventive effect, but also increases the cost of breeding and labor.
Therefore, adopting timely and active disease prevention is fundamental to control the occurrence and development of diseases in large yellow croaker cultured in cages, but at present there is no suitable early warning method for the occurrence of diseases in large yellow croakers in artificial culture

Method used

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  • Early warning method of the disease of artificial breeding type large yellow croaker
  • Early warning method of the disease of artificial breeding type large yellow croaker
  • Early warning method of the disease of artificial breeding type large yellow croaker

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Embodiment

[0016] An early warning method for the occurrence of diseases of artificially cultured large yellow croakers, measuring the transparency of the water body for cultivating large yellow croakers in cages at 14 o'clock on the same dayX 1 and temperature X 2 , and get the average wind force X of the day according to the local meteorological data 3 , then put the X 1 、X 2 and x 3 Substitute into the following formula:

[0017] Y 1 =1.546X 1 +0.07X 2 x 3 —11.922

[0018] Y 2 =1.284X 1 +0.072X 2 x 3 —10.067

[0019] Y 3 =1.568X 1 +0.108X 2 x 3 —16.921

[0020] Y 4 =1.981X 1 +0.076X 2 x 3 —17.062

[0021] Calculate the function value Y 1 , Y 2 , Y 3 and Y 4 , compare Y 1 , Y 2 , Y 3 and Y 4 function value, select the largest function value, and use the following criteria to warn whether artificially cultured large yellow croakers will have diseases and the degree of disease occurrence on the 3rd day: when the maximum value is Y 4 When , the warning leve...

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Abstract

The present invention discloses early warning method for disease incidence in artificial aquiculturing of yellow croaker. The early warning method includes measuring water transparency X1 and temperature X2 at 1-3 pm; measuring the daily average wind strength X3; calculating Y1=1.546X1+0.07X2X3-11.922, Y2=1.284X1+0.072X2X3-10.067, Y3=1.568X1+0.108X2X3-16.921 and Y4=1.981X1+0.076X2X3-17.062; comparing Y1, Y2, Y3 and Y4, and selecting the maximum to predict the disease incidence probability in the third day based on preset criterion. The present invention makes it possible to prevent and treat diseases of yellow croaker timely and effectively.

Description

technical field [0001] The invention relates to a method for preventing and treating diseases of artificially cultured large yellow croaker, in particular to an early warning method for the occurrence of diseases of artificially cultivated large yellow croaker. Background technique [0002] At present, large yellow croakers are mainly cultivated in seawater cages. With the continuous expansion of the scale of cultivation, the problem of large yellow croaker diseases is becoming more and more serious, which has caused great economic losses to the farmers. For example, in 2003, Zhejiang Province The direct economic loss caused by the disease of large yellow croaker that takes place just reaches more than 70 million, and the disease of large yellow croaker has become the bottleneck that restricts the sustainable and healthy development of the large yellow croaker industry in cage culture. At present, the disease prevention and treatment of large yellow croaker cultured in cages...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 倪海儿王国良吴常文王力
Owner NINGBO UNIV
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