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

A technology for disease occurrence and large yellow croaker, which is applied in fish farming, application, climate change adaptation and other directions, can solve the problems of short drug action time, increased breeding costs and labor, and high breeding density, so as to reduce the occurrence of large-scale diseases. , the effect of saving breeding costs and labor, and improving economic benefits

Inactive Publication Date: 2007-12-05
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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Embodiment

[0016] An early warning method for the occurrence of diseases of artificially cultured large yellow croaker, measuring the transparency of the water body in which large yellow croaker is cultured in a cage at 14:00 on the same day X 1 and temperature X 2 , and obtain the average wind X of the day according to the local meteorological data 3 , then put X 1 , X 2 and X 3 Substitute 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 The function value of , selects the largest function value, and predicts whether the disease will occur on the third day and the degree of disease occurrence in artificially farmed large yellow croaker according to the following criteria: when the maximum value is Y 4 When the ...

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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 cultured large yellow croaker. Background technique [0002] At present, the artificially cultured large yellow croaker mainly adopts the method of sea cage culture. With the continuous expansion of the breeding scale, the problem of large yellow croaker disease is becoming more and more serious, causing great economic losses to farmers. For example, in 2003 in Zhejiang Province The direct economic loss caused by the disease of large yellow croaker has reached more than 70 million. The disease of large yellow croaker has become a bottleneck restricting the sustainable and healthy development of the large yellow croaker industry in cage culture. At present, the disease prevention and control of large yellow croaker cultured in cages mainly adopts pass...

Claims

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Application Information

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Patent Type & Authority Applications(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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