34 results about "Pseudorasbora parva" patented technology

The invention relates to testing of fluidity of fluidity of a mitochondrial membrane of the liver of fish, in particular to an in-vivo test method for the fluidity of the mitochondrial membrane of the liver of pseudorasbora parva. The method comprises steps as follows: S1, a fish body exposure experiment; S2, preparation of the mitochondrial membrane of the liver of the pseudorasbora parva; S3, preparation of a DPH solution; S4, marking of a DPH fluorescent probe of the mitochondrial membrane; S5, determination of the fluidity of the membrane; S6, determination of the content of protein in mitochondria. With the adoption of the in-vivo test method for the fluidity of the mitochondrial membrane of the liver of pseudorasbora parva, influence of an agent on the fluidity of the mitochondrial membrane of the fish is determined accurately and conveniently.

The invention discloses a method for controlling early-bred of odontobutis potamophila. The method comprises the following steps: screening parent fishes, and controlling water temperature during a parent fish rearing process, so that the gonad development of the odontobutis potamophila is promoted; and meanwhile, carrying out enriching broodstock through feeding live food such as pseudorasbora parva and freshwater shrimp, and setting an artificial spawning nest, so that the gonad maturity in advance of the odontobutis potamophila is promoted, the breeding cycle is shortened, and odontobutis potamophila spawning and hatch equipment is recycled. In addition, odontobutis potamophila fries (sold on February) early bred through the method is at least more than three months than fries (sold on May-June) bred normally, so that the fish growth cycle can be prolonged, and the economic benefit of fishes is increased.

The invention discloses a special high-protein feed for snakehead fishes. The feed comprises an extruded feed and frozen fish paste, wherein the extruded feed comprises the following raw materials by weight percent: 50%-55% of imported fish meal, 20%-25% of bean pulp, 2%-3% of yeast powder, 5%-7% of spiral seaweeds, 8%-10% of fish oil, 5%-8% of corn powder, 1%-2% of a vitamin premix and 1%-2% of a microelement premix; the frozen fish paste comprises the following raw materials by weight percent: 30%-40% of pseudorasbora parva, 25%-35% of abbottina rivularis, 20%-30% of carp fries and the balance of other wild trash fishes. According to the mode, the feed is balanced in nutrition and high in protein content; the snakehead fishes are completely fed with the feed, so that the water body pollution can be alleviated, the growth of the snakehead fishes can be promoted, the meat quality of the snakehead fishes can be improved, and especially the immunity of the snakehead fishes is improved, the yield-per-mu of the snakehead fishes is increased, and the economic benefit of snakehead fish farming is remarkably increased.

The invention discloses a spicy minced fish meal and a method for making the spicy minced fish meal, wherein the spicy minced fish meal is made from fresh trash fish, peanut, sesame, dried chili, ginger powder, salad oil, table salt, monosodium glutamate, chicken powder and pepper. The spicy minced fish meal made by the method provided by the invention is bright in color and luster, fresh in taste, moderate in flavor, and sweet in flavor, and thereby being a good mating dish for principal food such as pancake and sesame seed cake. The method for making the spicy minced fish meal is capable of taking full advantage of small fresh wild trash fishes such as shishamo, pseudorasbora parva and abbottina rivularis for making delicious food so that the utilization rate of the small wild trash fishes is increased; and the method has easily available raw materials, is simple and convenient, and is low in cost and obvious in benefit.

The invention discloses a strengthening breeding method of parent fishes of pseudorasbora parva. The method includes the steps of parent fish selection, pond selection and treatment, parent fish strengthening breeding, water temperature adjustment, daily management and the like. According to the strengthening breeding method, gonad development of the parent fishes of the pseudorasbora parva can be stimulated, and the success rate of parent rearing maturity is improved; meanwhile rapid growth of the parent fishes is promoted, the survival rate of the parent fishes is improved, the problem that the parent quality and the survival rate of the pseudorasbora parva are hard to guarantee is effectively solved, and the method lays a technical foundation for artificial breeding of the pseudorasbora parva in China and has important significance for industrialization exploitation of the pseudorasbora parva.

The invention discloses an ecological breeding method for efficient polyculture of river crabs, freshwater shrimps and pseudorasbora parva. The method comprises preparing conditions of a pond, constructing escape-preventing facilities, airing and sterilizing the bottom of the pond, applying fertilizer to the pond, planting water plants, putting in snails, putting in fingerlings, regulating and controlling water quality, throwing in feed and the like. According to the ecological breeding method, the situation that siniperca chuatsi feed on freshwater shrimps in the breeding mode of shrimps, crabs and siniperca chuatsi in the past is avoided, so that the output of the freshwater shrimps is increased greatly, and the recapture rate of the freshwater shrimps is high; the pseudorasbora parva play a role as a scavenger by feeding on residual feed, so that water quality pollution is reduced greatly, water quality is improved, and the growth of river crabs, freshwater shrimps and pseudorasbora parva is boosted. According to the ecological breeding method, the output and quality of river crabs, freshwater shrimps and pseudorasbora parva are improved remarkably, death rate is lowered, feed waste is reduced, breeding cost is lowered, breeding benefit is improved, income of fishermen is increased, and efficiency improvement of the fishery industry is realized.

The invention discloses a concentrated aeration breeding method of pseudorasbora parva fries. The method includes the steps of fry origin, breeding pond treatment, concentrated aeration breeding and the like. According to the concentrated aeration breeding method, feeding can be performed in a concentrated mode without worrying the situation that environmental deterioration occurs due to little water, the fries cannot swim freely when just being placed in the pond, when the fries grow up gradually and can forge freely, the fries can swim away freely, the living space is large, competition between individuals is reduced, the growth rate is very high, the survival rate is high, the pond breeding efficiency is high, management and popularization are easy, and huge economic benefits exist.

The invention provides a disinfectant for cage hatching of Pseudorasbora parva, and belongs to the technical field of aquaculture. A preparation method comprises the following steps: culturing by inoculating endophyte in camphor to a PDA liquid medium containing sucrose octaacetate and sucrose stearate, sterilizing after fermentation, extracting a fermentation broth obtained, and concentrating toobtain a camphor endophyte metabolite; adding a sodium hypochlorite solution and cyanuric acid into a reaction kettle and simultaneously introducing chlorine gas, reacting and cooling and filtering toobtain sodium dichloroisocyanurate; and adding a citrate buffer, catalpol and casein into the camphor endophyte metabolite and the sodium dichloroisocyanurate, and uniformly mixing to obtain the disinfectant. The disinfectant of the invention has a killing rate of more than 99% on viruses, fungi and bacteria, has better stability, high solubility, longer duration of drug effect, causes no secondary pollution to the cultured water body, and helps improve hatching rate of fish eggs, and has little effect on the growth and meat quality of the advanced fry of Pseudorasbora parva.