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A kind of cultivation method for improving the yield of high-quality green shrimp fry

A cultivation method and technology of freshwater shrimp are applied in the cultivation field of improving the output of high-quality freshwater shrimp fry, which can solve problems such as failed shelling, larvae that cannot be normally shelled, and larvae that cannot be obtained, so as to improve the survival rate and yield, prevent Effects of parasitic ciliates and improvement of stress resistance

Active Publication Date: 2019-07-12
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Industrial seedlings need special facilities, and the bait can be cultivated in special ponds or commercial feeds such as car yuan, spirulina powder, shrimp chips, etc. The investment cost is relatively high, which is not conducive to the application of the majority of farmers.
Cultivation techniques in earthen ponds mainly include: pond selection, pond cleaning, fertilization, reasonable stocking, scientific baiting, and daily management, etc., but the yield and quality of freshwater shrimp seed production are very unstable, with an average yield of less than 500,000 fish / Mu, which is far from meeting the needs of large-scale freshwater shrimp farming
After our observation and research in recent years, we found that in the I-III stage of freshwater shrimp larvae, during the season of Huangmei, algal blooms often occur due to sudden rainstorms and other reasons, and the larvae cannot get enough bait and die in large numbers; at the same time, It is also often caused by a large number of sedentary ciliates parasitizing the water body, so that the larvae cannot shell normally and die; in the later stage, shelling fails due to lack of certain nutrients, and the survival rate of transportation after fishing is very low.
The above factors directly affect the survival rate and quality of freshwater shrimp seedlings. Therefore, the large-scale breeding technology of freshwater shrimp seedlings has not yet broken through, and the survival rate of seedling cultivation is low, which affects the enthusiasm of adult shrimp farmers.

Method used

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  • A kind of cultivation method for improving the yield of high-quality green shrimp fry

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Embodiment 1

[0045] A kind of cultivation method that improves the yield of high-quality freshwater shrimp fry, comprises the following steps:

[0046] 1. In a pond with a depth of 1.5m, an area of ​​5 mu, a slope of 1:3, and an independent water inlet and drainage system, the water in the pond was drained on April 25, and the pond was dried until the bottom mud cracked. On May 5th, 200kg / mu of organic fertilizer fermented with EM bacteria, distiller's grains, and chicken manure at a ratio of 0.1:3:8, 120kg / mu of quicklime, 20cm deep plowing of mud, 40cm of water inflow, disinfection of clear ponds, and slow release of fertilizers .

[0047] (2) On May 15, 6.5 kg / mu of egg-bearing freshwater shrimp with a body length of more than 4 cm and a yellow-green egg color were selected, and 1.2 kg / mu of male shrimp with a body length of more than 6 cm were stocked. The freshwater shrimp feed of throwing something and feeding 36% protein, throwing something and feeding is 7% of freshwater shrimp we...

Embodiment 2

[0057] A kind of cultivation method that improves the yield of high-quality freshwater shrimp fry, comprises the following steps:

[0058] (1) In a pond with a depth of 1.7m, an area of ​​6 mu, a slope of 1:3, and an independent drainage system for cultivating freshwater shrimp, in late April, pump water to dry the pond until the bottom mud cracks, and release it in early May. 150kg / mu of organic fertilizer fermented with EM bacteria, distiller's grains, and chicken manure at a ratio of 0.1:2:10, 150kg / mu of quicklime, deep plowing of 25-30cm of mud, 35-40cm of water inflow, disinfection of clear ponds, and slow release of fertilizers.

[0059] (2) On the 8th day after clearing the pond, select 7 kg / mu of ovipositous freshwater shrimp with a body length of more than 4 cm and a yellow-green egg color, and stock 1.5 kg / mu of male shrimp with a body length of more than 6 cm. The freshwater shrimp feed of throwing something and feeding 36% protein, throwing something and feeding i...

Embodiment 3

[0069] In a green shrimp breeding base in Xiangcheng District, Suzhou City, four ponds with basically the same conditions were selected. The depth of the ponds was 1.6m, the slope was 1:3, and the freshwater shrimp seed cultivation ponds with independent drainage systems had an area of ​​3.8 mu ( 3#), 4.2 mu (7#), 5.5 mu (10#), 7.5 mu (27#), 3# and 27# are the experimental ponds, and 7# and 10# are the control ponds. Regardless of the experimental group or the control group, the following methods were used to cultivate green shrimp seedlings.

[0070] (1) On April 27, pump water to dry the pond until the bottom mud cracks. On May 5, apply 150kg / mu of organic fertilizer fermented with EM bacteria, distiller's grains, and chicken manure at a ratio of 0.1:2:10, and 150kg / mu of quicklime , 25-30cm deep plowing, 35-40cm water inflow, clear pond for disinfection.

[0071] (2) On May 15, 7 kg / mu of egg-bearing freshwater shrimp with a body length of more than 4 cm and a yellow-green...

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Abstract

The invention provide a cultivating method for increasing high-quality freshwater shrimp seed output comprising following basic steps: cultivating pool cleaning and preparing, freshwater shrimp selecting, stocking and cultivating, enemy organism killing, stable bait cultivating, reasonable commodity shrimp feed feeding, reasonable commodity juvenile shrimp feed feeding, crustacean special nutrition supplementing, daily management and seed catching. The method of the invention can reduce cost of seed growing, increase the output and quality of freshwater shrimp seeds.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to a cultivation method for increasing the output of high-quality freshwater shrimp fry. Background technique [0002] Freshwater shrimp, scientific name Macrobrachium nipponensis, is distributed in my country, Japan and Southeast Asia, and is one of the main economic shrimps in the freshwater aquaculture industry in my country. Green shrimp is deeply loved by people because of its "tender meat, delicious taste and rich nutrition". At present, the aquaculture area in my country has exceeded 4 million mu, and the total output has reached about 200,000 tons, and it is expected to become the leading species of shrimp aquaculture in my country in the future. [0003] The basis of large-scale commercial freshwater shrimp farming is to have high-quality and sufficient seed supply. At present, there are many domestic reports and patents on the breeding of freshwater shrimp seedlings. Gao Lei, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/59A01K61/20A01G33/00A23K50/80A23K10/20A23K10/30
CPCA01G33/00A01K61/00Y02A40/80Y02A40/81
Inventor 宋学宏张卫业杨彩根付监贵徐乐
Owner SUZHOU UNIV
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