Industrialized efficient breeding method for freshwater shrimps

A factory-based, green shrimp technology, applied in climate change adaptation, fish farming, application, etc., can solve the problems of high water quality physical and chemical indicators, small green shrimp larvae, and poor mobility, shortening the time required for development, The effect of shortening the seedling cycle and improving the success rate

CN107646766AActive Publication Date: 2018-02-02SHANDONG AGRICULTURAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-02-02

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Abstract

The invention discloses an industrialized efficient breeding method for freshwater shrimps. The method comprises the following steps that 1, the freshwater shrimps are stocked in an outdoor breeding tank after disinfection treatment, and the oogenesis conditions of the female shrimps are observed; 2, after the oogenesis of the freshwater shrimps is determined, oogenesis fertilization tests are carried out, the average fertilization rate is calculated, and when the average fertilization rate reaches 70% or above, the oogenesis female shrimps are transferred to a disinfected indoor aquarium fortemporary breeding in time; 3, after the female parent shrimps complete egg hatching, the female parent shrimps are stocked into the outdoor breeding tank again to prepare the next reproduction mating; 4, after eggs are hatched into nauplii, the hatching rate is calculated, and the freshwater shrimp larvae are bred; 5, when the shrimp larvae all grow into young shrimps with the body length of 8-12mm, the breeding work for the shrimps is completed, and the emergence rate is calculated. By means of the breeding method, the reproduction mating management of the parent freshwater shrimps and hatching and breeding of the young shrimps are conducted, the fertilization rate, the hatching rate and the emergence rate can be significantly increased, and the time required for the development of thelarvae in different development stages is shortened.
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Description

technical field

[0001] The invention relates to the technical field of macrobrachium seedling breeding, in particular to an industrialized high-efficiency seedling raising method for freshwater shrimp. Background technique

[0002] Freshwater shrimp (Macrobrachium nipponense), scientific name Macrobrachium nipponense, is an important economical edible freshwater shrimp in my country. Freshwater prawns are very popular because of their tender meat, delicious taste and rich nutrition. However, the price of freshwater prawns remains high due to low yield (generally about 80-130 jin per mu) and few large-scale varieties.

[0003] In addition to genetic factors, the influence of the seedling breeding process is extremely important for the low and unstable yield, small size and unsatisfactory quality of freshwater shrimp. Breeding practice has proved that the scientific breeding of broodstock during the mating and spawning period and the reasonable operation of the seed hatching ...

Examples

Embodiment 1

[0068] Step 1. Outdoor cultivation tanks, indoor aquariums and their disinfection treatment:

[0069]1) The outdoor cultivation tank is made of glass fiber reinforced plastic, and it is a cuboid without a cover. The specifications are: 1350mm(L)*1050mm(W)*710mm(D). On one side of the top of the tank, 150mm from the horizontal surface of the tank body is a suspended controllable water inlet faucet. The diameter of the faucet nozzle is Φ=57mm, which is made of PVC material, and is used for filling new water; PVC water filter sleeves and drainage sleeves of Φ=370mm and Φ=120mm are used to prevent breeding animals from escaping with water and to remove sewage; use 120-150 mesh nylon gauze (or cloth sieve silk) for the water inlet ) tie mouth, drainage sleeve mouth with 70-80 mesh nylon gauze for filtration. Place micro-PVC pipe hot-bending disk-shaped hole oxygenation equipment in the tank, uniformly punch holes on the pipe wall, the hole diameter is 7.5-9.0mm, and the hole spaci...