30 results about "Bass (fish)" patented technology

The invention discloses a special compound feed for a largemouth bass. The special compound feed comprises the following components in parts by weight: 6-10 parts of wheat, 9-12 parts of flour, 18-22 parts of soybean meal, 3-8 parts of corn gluten meal flour, 28-32 parts of fish meal, 10-14 parts of meat and bone meal, 3-7 parts of hydrolyzed fish protein, 4-6 parts of fish oil, 1-2 parts of soybean soil, 0.9 part of a complex vitamin, 0.5 part of compound mineral salt, 0.5-0.8 part of choline chloride, 1-1.2 parts of monocalcium phosphate, 0.15-0.2 part of vitamin C, 0.015-0.02 part of vitamin E, 0.1-0.2 part of methionine, 0.1-0.2 part of lysine, 0.1-0.15 part of inositol, 0.1-0.3 part of edible salt, 0.05-0.1 part of an antioxidant and 0.06-0.1 part of a mildew preventive agent. The special feed disclosed by the invention has the advantages of overcoming the defect of slow later-period growth of the largemouth basses and effectively reducing mutual killing of the black basses.

The invention discloses a total artificial batch breeding method of striped bass. The method comprises the following steps of: after the parent fishes or the standby parent fishes are bred intensively to mature, performing artificial propagation by using an oxytocic, and then performing artificial incubation, fry breeding pool preparation, primary breeding and secondary breeding so that all the fries have the full length being more than 2.0 cm; and then, continuously throwing bait to the fry pool until the fishes grows big. The total artificial batch breeding method of striped bass improves fertility rate and hatchability, and also improves the fry breeding survival rate and increases the annual fry breeding quantity; in addition, the total artificial breeding effect is obviously improved and the annular fry breeding quantity reaches a large-scale breeding level.

The invention discloses a method for combining raceway-style perch cultivation and paddy-field nested crayfish cultivation, which combines the racetrack-type perch cultivation and paddy-field cultivation of crayfish. After the residual bait and feces of the perch in the breeding runway are concentrated and sucked, they are discharged into the paddy field where the crayfish are nested through the pipeline, so that the crayfish can eat the residual bait, and the paddy field absorbs the feces and purifies the water quality. At the same time, the water rich in nitrogen, phosphorus and other nutrients discharged from the runway is pushed into the paddy field ditch and paddy field through the water wheel aerator, so that the aquatic plants and rice in the paddy field ditch can absorb nitrogen, phosphorus and other nutrients in the water body, and purify the water quality . This combination makes the paddy field water become "living water", which is conducive to the growth of crayfish, so that the "waste" in the breeding runway has a more valuable place to go, and the water body in the purification area outside the runway is also fully utilized to achieve zero discharge of breeding sewage. At the same time, the land has been fully utilized to maximize its output value. It can realize the annual output of 473Kg of rice, 229Kg of crayfish and 51838Kg of perch on 50 mu of land, with an average benefit of 8810 yuan per mu.

The invention discloses an overall solution technical scheme for precise prevention and control of largemouth bass ranavirus of mandarin fish. According to the scheme, a paramagnetic particle method virus DNA / RNA nucleic acid extraction kit (LBT-VDEK) is adopted, a 16-hole fluorescent quantitative PCR instrument (LBT-16QPCR) and matched equipment thereof are utilized, a PCR-fluorescent probe technology is adopted, and specific DNA nucleic acid fragments of the largemouth bass ranavirus of mandarin fish are quantitatively detected, so that the method is simple, convenient and rapid, good in specificity and high in sensitivity; and a modern traditional Chinese medicine technology and a micro-ecological technology are adopted, the mandarin fish carrying the largemouth bass ranavirus is prevented and controlled, the death rate can be effectively reduced, accurate prevention and control are achieved, the problem of the largemouth bass ranavirus disease of mandarin fish is comprehensively, systematically and integrally solved, and the method has very wide application prospects and very high practical value.

The present invention relates to the use of alpha lipoic acid as feed additive for aquatic animals including fish and shrimp, especially for cold water fish as for example salmon, bream, bass and forwarm water fish as for example carp, tilapia, catfish. More particular, this invention relates to the use of alpha lipoic acid for the improvement of the feed conversion ratio and / or daily weight gainin fish, for reducing mortality by regulating the micro flora of the gut and / or by protecting the animal against infections caused by pathogenic viruses.

The invention provides an out-of-season alternate culture method for largemouth basses and litopenaeus vannamei in a pond. The method comprises the following steps that before and after January everyyear, out-of-season largemouth bass fries capable of eating artificial compound feed are put, and the largemouth basses are caught for sale when the largemouth bass fries are cultured to August; afterthe largemouth basses are sold in September, the pond is cleared, the litopenaeus vannamei are put and cultured, and the litopenaeus vannamei are cultured before and after January of the next year for fishing and selling; in the breeding process, aeration is conducted through micropores and a waterwheel aerator, and meanwhile a composite microecological preparation is splashed regularly to adjustthe water quality; and in this way, the largemouth basses and the litopenaeus vannamei are circularly and alternately cultured in sequence. According to the method, antagonism of alternate culture organisms and price advantages of out-of-season commercial fishes and shrimps are fully utilized, utilization efficiency of culture water space and time is improved, diseases are reduced, culture benefits are increased, and culture risks are eliminated.

A method and apparatus for filleting fish to produce high yielding fillets from relatively short bodied fish in the size range of about 600 grams to about 3.5 kilograms dependent on species. The method and apparatus are designed to be capable of handling salmon, tilapia, trout, arctic char, barramundi, snappers, walleye pike, striped bass and similar species where the rib follows the contour of the belly cavity. Further, the method and apparatus incorporate belly opening and eviscerating components prior to subjecting the fish to a backbone removal system so that the fish need only be headed, but not gutted, before introduction into the machine.

The invention discloses a feed for promoting fish muscle growth by using S-adenosylmethionine and a preparation method of the feed. Comprising the following components: 5 to 10 parts of fish meal, 10 to 20 parts of chicken meal, 20 to 30 parts of soybean protein isolate, 5 to 10 parts of cottonseed protein, 2.5 to 2.8 parts of fish oil, 1.8 to 1.3 parts of soybean oil, 1.0 to 1.5 parts of soybean lecithin, 1 to 2 parts of squid paste, 0.5 to 1.5 parts of monocalcium phosphate, 0.3 to 0.6 part of composite vitamin, 0.2 to 0.4 part of composite mineral substance, 2 to 5 parts of amino acid mixture and 0.1 to 2.5 parts of S-adenosylmethionine. The invention also discloses a preparation method of the feed and application of the feed in preparation of fish daily ration. The feed disclosed by the invention improves the absorption and transfer efficiency, improves the nutrition physiology of the largemouth bass, promotes nutrient substance metabolism of the largemouth bass, remarkably increases the number of muscle fibers, reduces the cross sectional area of the muscle fibers, efficiently promotes muscle growth, increases the content of protein in muscles, and reduces the discharge amount of nitrogen and phosphorus in the feed.

The invention provides a SNPs site and application in POMC of largemouth bass, belonging to the fields of aquatic breeding and biological gene technology. The present invention explores the endocrine physiology associated with POMC gene polymorphisms in largemouth bass under fasting and refeeding conditions. The single-gene sequence of POMC was obtained from a transcriptome dataset annotated with SNP sites, the full-length POMC cDNA was cloned, and the structure and homology of the gene were analyzed. The loci and genotypes of SNPs in largemouth bass POMC were determined, and the frequency distribution of different genotypes in populations raised on different diets was calculated. Expression patterns of POMC genotypes were compared after fasting and refeeding. Domestication of largemouth bass by replacing forage fish with formula feed has been well developed in the aquaculture industry, and this study will benefit molecular marker-assisted breeding of largemouth bass feeding habits for fast-growing, high-efficiency formula feeds. Utilization and high domestication efficiency feeding traits in largemouth bass populations.

The present invention provides a method for artificial propagation of red sea bass, comprising steps: (1) parent selection, (2) cultivation pond treatment, (3) broodstock cultivation management, a. In the first week of cultivation, green light and yellow light are used Alternately irradiate the pond water surface; within the second to third weeks of cultivation, alternately irradiate the pond water surface with green light and red light; after more than 3 weeks of cultivation, use green light to irradiate the pond water surface; b. The feed is divided into grouper compound feed, 1-2 servings of fresh small fish and shrimp, 5-8 servings of chilled miscellaneous fish, and artificial soft pellet feed; the first feed was fed in the first week of breeding, and the second feed was fed in the second to third weeks of breeding. Feed the third kind of feed for more than a week; c. The pond water temperature is controlled at 23-27°C, and the dissolved oxygen in water is >5mg / L; (4) intensive cultivation before breeding, (5) artificial breeding, (6) collection and incubation of fertilized eggs The artificial breeding method of the red sea bass of the present invention not only promotes the feeding rate of the parent fish, but also enhances the reproductive ability of the parent fish, improves the spawning rate and the fertilization rate of the parent fish, and effectively realizes large-scale artificial breeding of the red sea bass.

The invention discloses a largemouth bass brain cell line and an application thereof. The largemouth bass brain cell line has been deposited in the China Center for Type Culture Collection on March 25, 2021, and the deposit number is CCTCC NO: C202166. The largemouth bass brain cell line MSBr described in the present invention is stable in passage, has been successfully passaged for more than 65 generations and has a good growth state, and the cell line has a wide range of applications, not only for virus isolation and identification, pathogenic function research, and environmental pollutant detection. , gene screening and functional analysis and fish tumor research, etc., and can also be used for monitoring, diagnosis and epidemiological investigation of aquatic animal viral diseases, development of diagnostic kits and vaccines for related viral diseases, etc. application value and socio-economic value.

The invention relates to the technical field of largemouth bass cultivation, and discloses a largemouth bass circulation cultivation system, including several fish ponds, a transition pond and a temporary storage pond, and the transition ponds are communicated with each fish pond through connecting grooves. The temporary storage pool and each fish pond are connected through connecting pipes, and valves are installed in each passage, and an inner cylinder is arranged in the middle of the transition pool, and an annular filter cavity is formed between the inner cylinder and the inner wall of the transition pool , and the top of the shell of the inner cylinder is provided with an overflow hole communicating with the filter, and the filter cavity is provided with a bottom filter layer, a middle filter layer and a top filter layer in sequence from bottom to top, and the liquid level in the fish pond is high The top height of the top filter layer in the transition pool. The invention has a simple structure, and the fish pond for cultivating fry can carry out water circuit circulation, and in the process of water circulation flow, the water quality can be filtered and improved, so that the fish fry can be conveniently used.

The invention relates to a fish feed additive and application thereof, and a fish culture feed, and the fish feed additive comprises the following components in parts by weight: 0.01-0.05 part of L-carnitine, 0.01-0.03 part of bile acid, 0.05-0.1 part of lactic acid bacteria, 0.1-0.2 part of prunella vulgaris, and 0.05-0.1 part of mulberry leaves. The feed can relieve the adverse effect on liver functions after fishes such as largemouth bass are fed with low-protein, high-grease and high-starch feed, and inflammatory response is reduced.

The invention relates to a functional feed, in particular to the functional feed for preventing and treating a white liver lesion of micropterus salmoides, and a preparation method thereof. The feed comprises, by weight percentage, 15-25% of fish meal, 20-35% of chicken powder, 16-22% of soybean meal, 8-15% of flour, 4-8% of squid extractum, 1-2% of calcium dihydrogen phosphate, 1-2% of a multi-vitamin premix, 1-2% of a multi-mineral premix, 2-4% of fish oil, 1-2% of soybean oil, 1-2% of phosphatide oil, 2-7% of corn protein powder, 0.2-0.5% of pennisetum sinese herb extract, 0.1-0.5% of mulberry leaf fermentation liquid, and 0.1-0.3% of red rooted saliva root fermentation liquid. Compared with a common puffed feed for the micropterus salmoides, a feed formula provided by the invention can meet the basic nutrient demands of juvenile fishes, medium fishes and adult fishes of the micropterus salmoides, also can effectively enhance exchangeable backflow between artery blood and vein blood in hepatic tissue blood circulation, and has a good prevention effect and a repair treatment effect on the white liver lesion and hepatic tissue hypofunction caused by the white liver lesion.

The present invention constructs the G2‑2M recombinant protein subunit vaccine based on carbon nanotubes. After bathing and immunizing, the protection rate of the fish school reaches about 94%, which is higher than that of the G2 protein fragment. Based on the introduction of the M protein fragment, the recombinant protein Compared with previous studies, it does not require mannosaccharification modification, the production process is greatly simplified, and the production cost is also greatly reduced, which is of great significance to the sustainable development of fisheries and the safe production of aquatic products .