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

A juvenile hormone and aquaculture technology, which is applied in application, fish farming, climate change adaptation, etc., can solve problems such as insoluble in water, affecting growth, and irritation of juvenile shrimp, achieving significant economic benefits and strong species Specific, easy-to-operate effects

Inactive Publication Date: 2005-07-27
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
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  • 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] Embodiment 1: The impact of KK-42 application method on shrimp survival rate

[0022] The juveniles of Penaeus japonicus and Penaeus vannamei were treated with bait method and dipping method respectively, and the results were counted after 45 days. The basic bait formula of medicinal bait is: 40% peanut cake, 40% small miscellaneous fish, 20% wheat flour. Dissolve KK-42 with ethanol to make bait with a drug content of 50ppm, and feed the bait once a day in the morning and evening according to the conventional bait amount, and feed it continuously for 5 days, and then raise it according to the routine. Medicinal bath liquid: KK-42, absolute ethanol or isopropanol or n-butanol and surfactant Tween-80 are made into a solution containing KK-42 at a concentration of 50 ppm. Infiltrate the shrimp seedlings for 40 seconds, and then rear them as usual. The results showed that the KK-42 treatment could significantly increase the survival rate of prawns, compared with the effec...

Embodiment 2

[0024] Embodiment 2: the impact of the concentration of KK-42 on the survival rate of shrimp

[0025] Whether it is Penaeus japonicus or Penaeus vannamei, the natural mortality rate of shrimp seedlings is relatively high during this period, and different numbers of dead shrimp seedlings can be picked out from the water bodies of each culture unit every day, but due to the inability to accurately count the number of dead shrimp seedlings , so it can only be used as a reference. After 45 days of KK-42 treatment, the survival rate of shrimp in the treatment group was significantly higher than that of the control group, and the 50ppm and 150ppm treatment groups were respectively higher than the control group by 10% (P. japonicus) and 15% (Penaeus vannamei). The specific results See Table 2-3.

Embodiment 3

[0026] Embodiment 3: The impact of KK-42 on the survival rate of Penaeus vannamei cultured in big ponds

[0027] In the inventive method, 7 different ponds of different sizes were selected with a total of 60 mu as the culture water body of the treatment group shrimp, and 3 ponds were selected at random as contrast ponds. The results showed that the average survival rate of shrimp in the treatment group was 50.3%, while that of the control group was 42.7% (see Table 4), and the treatment group was 7.6% higher than the control group.

[0028] Table 2. Effects of different concentrations of KK-42 on the survival rate of Penaeus japonicus

[0029] Days after treatment Treatment dose (ppm) Cumulative sorted out dead shrimp (heads) Survival rate (%)

[0030] 15 0 (control) 35

[0031] 10 29

[0032] 50 22

[0033] 150 23

[0034] 30 0 (control) 18

[0035] 10 14

[0036] 50 9

[0037] 150 7 ...

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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 discloses a juvenile hormone antagonist solution, in particular a method for improving the survival rate of aquaculture crustaceans by utilizing the juvenile hormone antagonist KK-42 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 mid-to-high-end aquatic products such as shrimps and crabs is gradually increasing. Therefore, fishing alone is far from 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 shrimps. In my country, Penaeus chinensis, Penaeus monodon, Penaeus japonica, freshwater shrimp, and Macrobrachium rosenbergii have been widely cultivated in China. In recent years, Penaeus vann...

Claims

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Application Information

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Patent Type & Authority Applications(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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