Method for accelerating reproductive capacity improvement of Apostichopusjaponicus Selenka parent
A technology of fecundity and broodstock, applied in animal feed, additional food elements, animal feed, etc., can solve the problems of restricting the development of sea cucumber breeding industry, low survival rate of seedlings, and slow growth rate, so as to improve the accumulation of gonad nutrition, The effect of promoting gonad development and hatching rate
Active Publication Date: 2021-06-22
DALIAN OCEAN UNIV
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[0004]However, most of these seedlings have problems such as germplasm degradation, poor stress resistance, low seedling survival rate and slow growth rate in the later stage. Problems such as egg quantity, fertilized egg quality, and low hatching rate directly limit the development of sea cucumber farming industry
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Embodiment 1
[0061] In November 2019, 6,000 small-sized ginseng species (180-200g / head) were harvested in three local sea cucumber nursery farms in Dalian, and put into three cement pools (40 heads / m2) in the local nursery workshop. 3 ) in cultivation. Use a nano-aerator to inject high-level nano-oxygen, put in the ginseng, and gradually increase the dissolved oxygen in the aquaculture water at a rate of 5mg / L·h, so that the dissolved oxygen content in the aquaculture water will eventually reach 30-35mg / L, and continue High-level nano-oxygen environment cultivation.
[0062] During this period, fortified feed and additives were used for feeding, and the daily feeding amount was 4% of the weight of the species in the pool. The feed formula is 70% of sea mud, 5% of fish meal, 10% of sargassum powder, 10% of sargassum powder, 3% of spirulina powder, 1% of multivitamin and 1% of fortified additive. The enhanced additive formula is vitamin E 100g / kg, phospholipid 100g / kg, folic acid 0.5g / kg, ...
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The invention provides a method for accelerating reproductive capacity improvement of an Apostichopusjaponicus Selenka parent, and belongs to the technical field of Apostichopusjaponicus Selenka parent cultivation. The method comprises the following steps of: S1: fishing, catching, screening and transporting breeding Apostichopusjaponicus Selenka; S2: after the breeding Apostichopusjaponicus Selenka is added, injecting nanometer oxygen into a cultivation water body to enable the dissolved oxygen quantity of the cultivation water body to achieve 30-35mg / L, and continuously carrying out high-level nanometer oxygen cultivation; S3: feeding reinforced feed into the cultivation water body, and at a natural temperature, keeping the high-level nanometer oxygen cultivation in S2 for 50-60 days until the water temperature lowers to 2-3 DEG C; S4: under a high-level nanometer oxygen environment, carrying out procedural temperature rise maturity acceleration of the breeding Apostichopusjaponicus Selenka to accelerate gonad development of the breeding Apostichopusjaponicus Selenka; S5: in the second day when male breeding Apostichopusjaponicus Selenka naturally discharges sperms, independently alternately carrying out a high dissolved oxygen running water way and a low dissolved oxygen running water way for 30min, stimulating parent Apostichopusjaponicus Selenka to lay eggs and discharge sperms; and S6: collecting the eggs, and finishing Apostichopusjaponicus Selenka parent cultivation. By use of the method, breeding Apostichopusjaponicus Selenka reproductive capacity can be effectively improved, the breeding Apostichopusjaponicus Selenka can be accelerated to generate physical health, in addition, stress resistance is high, and the method can be easily operated and popularized.
Description
technical field [0001] The invention relates to the technical field of japonicus japonicus parent body cultivation, in particular to a method for promoting the improvement of japonicus japonicus parent body fecundity. Background technique [0002] Apostichopus japonicus Selenka belongs to the phylum Echinodermata, the class Holothuroidea, the family Stichopodidae, and the genus Apostichopus. It has high nutritional health care and medical value. The sea cucumber breeding industry is the pillar industry of the coastal fishery economy in northern my country. After 2000, the artificial ripening technology of sea cucumber seeds and ginseng was gradually established. The sea cucumbers were cultivated indoors. Participate in the development of gonads. In recent years, with the increase of people's demand and the continuous increase of harvesting intensity, the resources of sea cucumber are declining sharply. The depletion of natural resources and the continuous increase of market...
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IPC IPC(8): A01K61/30A23K10/22A23K10/30A23K10/16A23K20/174A23K50/80
CPCA01K61/30A23K10/22A23K10/30A23K10/16A23K20/174A23K50/80Y02A40/81
Inventor 韩雨哲任同军
Owner DALIAN OCEAN UNIV