A method to improve the survival rate of juvenile abalone during bait transfer period
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A technology of survival rate and bait transfer, which is applied in the field of industrial aquaculture, can solve the problems of high mortality, poor feeding, mechanical damage, etc., and achieve the effect of simple operation, cost control and low cost
Active Publication Date: 2021-06-08
威海长青海洋科技股份有限公司
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[0004] The purpose of the present invention is to provide a new, green and pollution-free breeding method that can significantly improve the survival rate of juvenile abalone in order to solve the problems of mechanical damage, poor feeding, pathogenic bacteria, and high mortality during the juvenile abalone baiting period.
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Embodiment 1
[0022] Preparation of XS1412C strain fermentation broth:
[0023] Pick a single colony to inoculate the 2216E culture solution, shake and culture at 26°C for 6-8 hours, inoculate the fermentation culture solution with 3% inoculation amount, and ferment at 30°C for 12-24 hours, and the bacterial concentration reaches 1×10 3 -1×10 8 cfu / mL is sufficient.
[0024] Preparation of chitosan-oligosaccharide solution: 10g chitosan was dissolved in 100mL 0.5% acetic acid solution; 35g low-viscosity sodium alginate was dissolved in 500mL seawater, and 30mL 1×10 7 -1×10 8 cfu / mL XS1412C strain fermentation broth, 35 ° C fermentation and enzymatic hydrolysis for 6 hours, boiling water bath inactivation for 10 minutes, after cooling to obtain fucoidan oligosaccharide solution; oligochitosan solution and fucoidan oligosaccharide solution were mixed at a ratio of 1:5, then filtered Sea water to 2L, spare.
[0025] A method for improving the survival rate of juvenile abalone during bait t...
Embodiment 2
[0030] Preparation of XS1412C strain fermentation broth:
[0031] Pick a single colony to inoculate the 2216E culture solution, shake and culture at 26°C for 6-8 hours, inoculate the fermentation culture solution with 4% inoculation amount, and ferment and culture at 30°C for 12-20 hours, until the bacterial concentration reaches 1×10 3 -1×10 8 cfu / mL is sufficient.
[0032] Preparation of chitosan-oligosaccharide solution: 16g chitosan was dissolved in 100mL 0.5% acetic acid solution; 21g low-viscosity sodium alginate was dissolved in 500mL seawater, and 25mL 1×10 7 -1×10 8 cfu / mL XS1412C strain fermentation broth, 35 ° C fermentation and enzymatic hydrolysis for 5 hours, boiling water bath inactivation for 10 minutes, after cooling, a fucoidan oligosaccharide solution was obtained; the chitosan oligosaccharide solution and the fucoidan oligosaccharide solution were mixed at a ratio of 1:5, and then filtered Sea water to 2L, spare.
[0033] A method for improving the surv...
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Abstract
The invention relates to the technical field of industrialized aquaculture. Aiming at the problems of mechanical damage, poor feeding, pathogenic bacteria, and high mortality in juvenile abalone during bait transfer, the present invention provides the following technical solution: including the steps: one week before juvenile abalone peeling, regularly 1 time a day, attaching the corrugated abalone to the juvenile abalone Sow the XS1412C strain fermentation broth between the plates; after the juvenile abalone is peeled off, the juvenile abalone collected in the net cage is washed with the stripping solution in clean sea water, and then the juvenile abalone is soaked in the chitosan oligosaccharide solution for 20-90s; After the juvenile abalone is transferred to the ridge tile attachment base, the juvenile abalone breeding pond has a long flow of water to keep the water quality clear, and the bait added with the fermentation liquid of the XS1412C strain is regularly fed for 15‑20 days. The method provided by the invention can significantly improve the survival rate of the juvenile abalone in the bait transfer period, and is also beneficial to promoting the growth of the juvenile abalone.
Description
technical field [0001] The invention relates to the technical field of industrialized aquaculture, in particular to a method for increasing the survival rate of juvenile abalone during bait transfer. Background technique [0002] There are many difficulties in the breeding process of abalone. Due to the prohibition of drugs, no drugs can be used to assist in the breeding of abalone, and the mortality rate of juvenile abalone farming is very high, especially during the period of baiting of juvenile abalone. The feeding period of juvenile abalone is the period when juvenile abalone switches from feeding on benthic diatoms to artificial feed. After the juvenile abalone is cultivated, the early growth mainly feeds on benthic diatoms. Usually, the benthic diatoms are cultivated on plastic corrugated boards, and the juvenile abalones are attached to the corrugated boards to feed. When the juvenile abalone grows to a certain size, the bait needs to be replaced. Peel off the juveni...
Claims
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