65 results about "Chaetoceros" patented technology

The invention relates to a small pool of clear water-breeding method of litopenaeus vannamei using in aquaculture industry, the method includes three key controlling progresses which are water conditioning control, fed diet controlling and synchronized quality control. The water conditioning progress is supported by that as follows: after the water is sterilized through sand filtration, ozone and ultraviolet, it must be filtered by turns through three different filter membrane the pore diameter of which are respectively 10,1.0,0.5 mum, and in the later period of nursery, 100 000 cell / ml chlorella must be invested into the water in order to control its quality; fed diet controlling is carried out through using bone of algae, algae and chaetoceros harvest worms far bait, investing and feeding artificial synthesized bait during the second stage of zoea larva; synchronized quality control will be synchronized through salinity tolerance test or qualified hunger tolerance that will be carried out after emergence.

The invention relates to offspring seed breeding technology of aquaculture, in particular to a fry breeding method for thais luteostoma. Wild adult individuals of the thais luteostoma are collected in an open sea at the temperature of 22-28 DEG C as parent luteostoma, breeding density is 2-5 / m<3>, intensive breeding is conducted, eggs are laid, egg capsules are hatched into swimming larva according to hatching density as 3000-6000 egg capsules / m<3>, the swimming larva is fed with swimming larva chrysophyceae, skeletonema costatum, chlorella or chaetoceros according to feeding quantity of 30-100 thousand / mL, after the larva is turned to be baby luteostoma, feeding quantity is10-20 g per time for 1000 young luteostoma, water is changed and disinfected timely, the baby luteostoma is turned to be young luteostoma after 25-45 days, and the young luteostoma can be cultivated. The fry breeding method for the thais luteostoma is simple to operate, achieves scale breeding of thais luteostoma fry, and improves fry yield and survival rate of the thais luteostoma on the basis of reducing cost.

The invention discloses a runway type bioreactor applicable to sunshine factorization. The runway type bioreactor is used for cultivating isochrysis galbana, phacodactylum tricornutum, chaetoceros gracilis, chaetoceros mulleri and haematococcus pluvialis on a large scale and comprises a cultivating device body in the shape of a closed runway pond. A nutritive salt supplementing pipe and an injected water supplementing pipe are arranged on the side walls of the inside of the runway pond and are respectively connected with an automatic fed-batch nutritive salt supplementing device and a water treatment plant of a heat exchanger; two CO<2> gas supplementing pipes are respectively arranged on two sides of the inner bottom of the runway pond and are connected with CO<2> gas supplying devices, two screw pump mechanical propulsion devices are arranged at corners of the inside of the runway pond, a partition plate is arranged in the center of the inside of the runway pond, and buckles are respectively arranged on two outer sides of the runway pond. A stainless steel support is arranged at the outer bottom of the runway pond, and an LED lamp which is an auxiliary light source is arranged on the support; the runway pond is further provided with double-surface runway cleaning devices. The runway type bioreactor has the advantages that the illumination surface-area-to-volume ratio of algae liquid in the cultivation pond can be increased, accordingly, the illumination utilization rate of the bioreactor and the cultivation density can be increased, and the runway type bioreactor is favorable for improving the factorization micro-algae cultivation efficiency.

The invention discloses an artificial breeding feed for oysters. The feed comprises the following raw materials in parts by weight: 21-25 parts of flour, 10-13 parts of soybean meal, 7-9 parts of cornmeal, 5-10 parts of cuttlefish powder, 8-12 parts of silkworm chrysalis powder, 4-6 parts of shrimp shell powder, 3-8 parts of liver powder, 25-28 parts of isochrysis galbana, 17-22 parts of chaetoceros, 15-19 parts of common scouring rush herb, 2-9 parts of spreading hedyotis herb, 1-6 parts of phoenix-tail ferns, 11-15 parts of calcium dihydrogen phosphate, 7-13 parts of zeolite powder, 1-4 parts of montmorillonite, 1-4 parts of bentonite, 3-6 parts of choline chloride, 5-7 parts of betaine, 16-22 parts of chitosan, 6-10 parts of lignin and 7-9 parts of complex minerals. The feed can improve the survival rate of artificially bred oysters, shorten the breeding time of the oysters, and improve the yield of the oysters.

The invention discloses a preparation method of a Chaetoceros minutissismus concentrated culture solution and high-efficiency culture technology, belonging to the aquaculture field. The prepared Chaetoceros minutissismus concentrated culture solution can be stored and transported conveniently and can be produced conveniently in a factory-like, standard and specialty manner, microconstituents can be quantified accurately, and a traditional f / 2 nutritive salt formula is optimized, and the constituents are reasonable and balanced and are beneficial to the rapid growth of the microalgae; a plastic purified water barrel is used for breeding Chaetoceros minutissismus, the operation is flexible, pollution cannot be caused easily, the washing operation is convenient, and the plastic purified water barrel cannot be scratched easily, and is low in cost; different illuminations and temperatures are provided in early, middle and later culture periods, nutritive salt is supplemented in the later culture period to promote the continuous and rapid growth of the Chaetoceros minutissismus, and the algal yield is improved by 120%; and three plastic barrels are connected in series for breeding, introduced gas is utilized for three times, and thus energy and resources are saved.

The invention discloses a bait formula for enhancing nutrition of meretrix lamarckii at a planktonic larva phase. The bait formula comprises the following raw materials in parts by weight: 3-7 parts of a chlorella mother liquid, 0.5-0.8 part of a isochrysis galbana parke mother liquid, 0.6-0.9 part of a chaetoceros mulleri mother liquid, 0.05-0.6 part of a platymonas subcordiformis mother liquid and 0.02-0.06 part of a rhodotorula benthica mother liquid. The bait formula for enhancing nutrition of meretrix lamarckii at the planktonic larva phase, which is disclosed by the invention, has comprehensive and sufficient nutrition, is good in palatability, excellent in food calling and intake effect, capable of meeting requirements of enhanced nutrition and high-metamorphosis survival rates at the larva phase, improving the immunity and the stress resistance of zooplankton, improving disease and insect resistance of the zooplankton and purifying water, and has rich bacterial with high activity and metabolite with great gain, and development by metamorphosis of planktonic larvae can be accelerated.

The invention provides a method for improving the water binding capacity of a frozen dish of beef through microbial fermentation multilevel processing. The method comprises the steps of implementing three-section precooling on a butchered cow, gradually reducing the temperature of a precooling tank, conducting three-section ultrasonic treatment with an ultrasonic generator while precooling, cutting into slices after processing, mixing a seasoning with the beef, implementing ultrahigh pressure microwave processing, then smearing a lactobacillus bulgaricus bacterium suspension on the surface ofthe beef, then adding sodium chloride, sodium caseinate and ice water into the beef, mixing evenly, rolling and rubbing at the low temperature under vacuum, putting in an air bag after packaging undervacuum, beating and stretching the beef by inflating and exhausting air of the air bag, adding centrifuged subnatant of a chaetoceros mulleri culture solution into the beef, irradiating, then inoculating a survived Streptococcus thermophiles. strain, heating the beef, then adding a calcium stearate solution with the mass concentration of 0.0002%-0.0003%, and holding for 1.5-2 hours for gelatinization.

The invention discloses a method for breeding a marine shellfish family in a larval stage. The method comprises the following steps that a set of external tank bodies are arranged, and an internal netcage is arranged in each external tank body; a high-level water tank for water addition is arranged at the tops of the external tank bodies, and water is discharged from the bottom of the high-levelwater tank to the internal net cages through a water outlet pipe; sinonovacula constricta larvae which are developed to trochelminth larvae are collected by a 300-mesh boulting cloth and transferred to the internal net cages; filtered and disinfected water is added to the high-level water tank and discharged into the internal net cages through the drainage pipe separately, and the internal net cages are oxygenated for breeding; a mixed solution of chrysophyceae and chaetoceros is added to the high-level water tank three times in total every day in the morning, afternoon and evening and discharged into the internal net cages through the drainage pipe; when water replacement and cleaning are needed in the breeding process, water discharge valves at the bottoms of the external tank bodies areopened for water replacement and pond overturning and emptying treatment until breeding is completed, it is only required to add the mixed algae solution to the high-level water tank in the breedingprocess, the labor intensity is reduced, and the problems in the background art are effectively solved.