Juvenile antagonist solution and its method for increasing survival percentage of crustacean aqueculture

A juvenile hormone, aquaculture technology, applied in application, fish farming, climate change adaptation and other directions, can solve problems such as insoluble in water, affect growth, difficult to operate, etc., achieve significant economic benefits, strong species specificity , the effect of low cost

Inactive Publication Date: 2008-03-26
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for juvenile shrimps whose body length is only within the range of 0.6-0.8cm, it is impossible to use the drip method for industrial production; It is not easy to control the exact application dosage, and the bait is easy to be lost after soaking in water, so it cannot be guaranteed that every juvenile shrimp will be eaten; it is the best choice to use medicated bath for juvenile shrimp
General juvenile hormone analogs or juvenile hormone antagonists are fat-soluble and difficult to dissolve in water. Acetone is used as a solvent in the above-mentioned patent, but the effect is not satisfactory and acetone has certain irritation to juvenile shrimp, which will affect it. to grow

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: Effect of KK-42 application method on shrimp survival rate

[0022] The larvae of Penaeus japonicus and the larvae of Penaeus vannamei were treated by bait method and medicated bath method respectively, and the results were counted after 45 days. The basic bait formula is: peanut cake 40%, small fish 40%, wheat flour 20%. KK-42 was dissolved in ethanol to prepare a bait with a drug content of 50 ppm, and the bait was administered once a day in the morning and evening according to the conventional feeding amount, and was fed continuously for 5 days. Medicine bath: KK-42, absolute ethanol or isopropanol or n-butanol and surfactant Tween-80 are made into a solution containing KK-42 with a concentration of 50ppm. The shrimp fry were soaked for 40 seconds, and then reared as usual. The results showed that KK-42 treatment could significantly improve the survival rate of prawns, compared with the better effect of soaking method. The specific results are shown in ...

Embodiment 2

[0025] Example 2: Effect of the concentration of KK-42 on the survival rate of shrimp

[0026] Whether it is Penaeus japonicus or Penaeus vannamei, the natural mortality rate is relatively high during the period of shrimp fry. Different numbers of dead shrimp fry can be picked out from the water bodies of each aquaculture unit every day. However, due to the inability to accurately count the number of dead shrimp fry , so it can only be used as a reference. After 45 days of treatment with KK-42, the survival rate of shrimp in the treatment group was significantly higher than that in the control group, and the 50ppm and 150ppm treatment groups were higher than the control group by more than 10% (penaeus japonicus) and 15% (penaeus vannamei), respectively. The specific results See Table 2-3.

Embodiment 3

[0027] Example 3: Effect of KK-42 on the survival rate of Penaeus vannamei cultured in big ponds

[0028] In the method of the present invention, 7 ponds with different sizes and a total of 60 mu are selected as the shrimp culture water bodies of the treatment group, and 3 ponds are randomly selected as the control ponds. The results showed that the average survival rate of shrimp in the treated group was 50.3%, while that in the control group was 42.7% (see Table 4), and the treated group was 7.6% higher than the control group.

[0029] Table 2. Effects of different concentrations of KK-42 on the survival rate of Penaeus japonicus

[0030] days after processing

Treatment dose (ppm)

Cumulatively picked dead shrimp (heads)

Survival rate (%)

15

30

45

0 (control)

10

50

150

0 (control)

10

50

150

0 (control)

10

50

150

35

...

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PUM

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Abstract

A juvenile hormone antagon solution KK-42 for increasing the survival rate of cultured crustacean, especially the shrimp fry, by bath method or feed method is prepared from liposoluble solvent, tween-80, juvenile hormone antagonist KK-42 and water proportionally.

Description

(1) Technical field [0001] The invention relates to a method for improving the survival rate of aquaculture crustaceans, in particular to a method for improving the survival rate of aquaculture crustaceans by using a juvenile hormone antagonist solution. (2) Background technology [0002] With the rapid development of my country's fishery economy and the continuous improvement of people's living standards, the demand for aquatic products remains strong. Due to the limited supply of natural resources, the demand for medium and high-grade aquatic products such as shrimps and crabs is gradually increasing. Therefore, fishing alone is not enough. We must rely on aquaculture to improve aquaculture products to meet people's growing material living standards. demand. [0003] There are many economic species of shrimp. In our country, Chinese shrimp, Penaeus monodon, Japanese shrimp, green shrimp, Macrobrachium rosenbergii, etc. have been widely cultivated. In recent years, becaus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 宁黔冀杨洪程鸿轩陈广文
Owner HENAN NORMAL UNIV
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