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Parent shrimp culture method for improving breeding performance of Litopenaeus vannamei

A technology of Litopenaeus vannamei and Penaeus vannamei, which is applied in the field of nutrition to regulate the reproductive performance of Litopenaeus vannamei, can solve the problems of single nutritional components and cannot fully meet the needs of rapid development of shrimp broodstock gonads, etc., and achieve high economic efficiency and low cost. Rely on and optimize the effect of the production process

Active Publication Date: 2019-01-04
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, the cultivation of broodstock of Litopenaeus vannamei in my country has been mainly based on fresh bait, especially clamworm and squid, etc., with single nutritional components, which cannot fully meet the needs of rapid development of broodstock gonads of prawns.

Method used

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  • Parent shrimp culture method for improving breeding performance of Litopenaeus vannamei
  • Parent shrimp culture method for improving breeding performance of Litopenaeus vannamei
  • Parent shrimp culture method for improving breeding performance of Litopenaeus vannamei

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Experimental program
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Effect test

Embodiment 1

[0024] Embodiment 1. Using this method to strengthen the reproductive performance of the broodstock of Litopenaeus vannamei

[0025] 1. Experimental design and experimental feed formula

[0026] With the common prawn feed formula on the market as the basic formula (this reference formula does not belong to the scope of protection of this patent application), add 2% (intensified period) or 3% (maturity-promoting period) in the basic feed Fortified oil (fortified oil is DHA, EPA and ARA enriched fish oil enrichment), to formulate to achieve the DHA: EPA: ARA ratio and total amount described in this method. The feed formula and fatty acid composition are shown in Table 1 and Table 2, respectively. The control group was fed clamworm+squid throughout the whole process.

[0027] Table 1 Feed formula and crude composition (% dry matter) of experimental feed

[0028]

[0029] 1 Vitamin mix (mg or g / kg feed): thiamine 25mg; riboflavin, 45mg; pyridoxine hydrochloride, 20mg; vitam...

Embodiment 2

[0046] Embodiment 2, second year seedling season repeat experiment

[0047] 1. Experimental design and experimental feed formula

[0048] In this experiment, the same experimental feed as in Example 1 was used. The experiment was repeated in the seedling season of the second year.

[0049] 2. Experimental shrimp and breeding management

[0050] In this experiment, 8-month-old rats were adopted, and there was no nutritional fortification treatment in the early stage of the experiment. The average body length of female shrimp is 9.1cm, the average body weight is 17.2g, and there is no gonad development; the average body length of male shrimp is 8.3cm, and the average body weight is 18.4g. Each test group has three parallels, and each parallel has 30 female shrimps and 30 male shrimps. The control group was fed clamworm+squid throughout the whole process, and the male and female were mixed. The male and female of the experimental treatment group were reared separately during...

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Abstract

A parent shrimp culture method for improving breeding performance of Litopenaeus vannamei, belonging to the field of aquatic animal nutrition feed. The total amount and proportion of different types of long-chain polyunsaturated fatty acid in male and female parent shrimp diet are controlled respectively at different stages in that process of breeding parent shrimp of Litopenaeus vannamei, so as to regulate gonad development and breeding performance of parent shrimp. The method of the invention can remarkably improve sex hormone secretion, gonad development, oviposition quantity, fertilized egg hatching rate and nauplius metamorphosis rate of parent shrimp of Litopenaeus vannamei. The technique can reduce the dependency on Nereis vannamei and squid in the parent shrimp breeding of Litopenaeus vannamei, and the cost is controllable and the maneuverability is strong.

Description

technical field [0001] The invention belongs to the field of nutritional feed for aquatic animals, and in particular relates to a nutritional method for regulating the breeding performance of Litopenaeus vannamei. Background technique [0002] Litopenaeus vannamei, also known as Penaeus vannamei, is the most productive farmed prawn in my country. It is native to the Pacific coast of South America, mainly concentrated in the waters from northern Peru to the coast of the Gulf of Mexico. This variety has the characteristics of fast growth, strong adaptability, delicious taste, uniform size of finished shrimp, and can reproduce all year round. Litopenaeus vannamei aquaculture is the mainstay of my country's shrimp aquaculture industry. However, the broodstock of Litopenaeus vannamei has been dependent on imports for a long time, which is an important factor limiting the rapid development of Litopenaeus vannamei aquaculture in my country. In addition to the deficiencies in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/59A23K50/80A23K10/20A23K20/158
CPCA23K10/20A23K20/158A23K50/80A01K61/59Y02A40/81
Inventor 徐后国梁萌青孟宪红罗坤卫育良
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI