Submerged plant cultivation tank

The invention provides a submerged plant cultivation tank. The submerged plant cultivation tank comprises a tank body of which the top is provided with an opening and a tank cover net (3) which is arranged at the opening of the top of the tank body. Compared with the submerged plant cultivation tank adopted by the prior art, the submerged plant cultivation tank has the advantages that: the opening of the top of the submerged plant cultivation tank is provided with the tank cover net; and mud is placed in the tank body during use, the submerged plant can pass through the tank cover net during growth, and the rhizome of the submerged plant is wound on the tank cover net, so that the submerged plant is fixed. The tank cover net has a good function of fixing the submerged plant, and can prevent the submerged plant in the cultivation tank from being washed away.

Blocking net facility for cleaning fishery in shallow waterweed type lake reservoir

The invention provides a blocking net facility for cleaning fishery in a shallow waterweed type lake reservoir, which comprises a fence net for enclosing to form a fence net area and an inner ground cage, wherein the fence net is connected with a plurality of fixed piles fixed to bottom sediment; the inner ground cage is arranged in the fence net area and comprises a first inner cage and a secondinner cage which is intersectant with the first inner cage; the first inner cage and the second inner cage comprise inner cage supports and net coats covered on the inner cage supports; and the firstinner cage is provided with a first inlet in which fish and crabs get, and the second inner cage is provided with an outlet for the fish and the crabs to go out. By the arrangement, the blocking net facility for the cleaning fishery in the shallow waterweed type lake reservoir can reduce the risks of the escaping of the fish and crabs effectively by arranging the inner ground cage for confusing the fish ...

Freshwater aquaculture tail water treatment system based on aquatic organism food web and treatment method thereof

The invention relates to the field of aquaculture tail water treatment, and discloses a freshwater aquaculture tail water treatment system based on an aquatic organism food web and a treatment method thereof. According to the method, an aquatic organism food web of an ecological system is fully and reasonably utilized, proper animals and plants are selected to shorten the food chain grade and absorb particles in a water body and eutrophication substances dissolved in the water body, pollutants and bacteria in the water body are effectively removed, meanwhile, nitrogen and phosphorus-containing organic matters in tail water are taken out in an aquatic product form, and the tail water quality is improved. The method is a freshwater aquaculture tail water purification mode which is small in occupied area, low in energy consumption, low in cost input, efficient, simple and easy to implement, and achieves the goals of green and cyclic utilization of water resources and easy popularization.

Large-scale cultivation method for summer fingerlings of Pelteobagrus fulvidraco

The present invention relates to a method for large-scale cultivating Yellow Catfish and belongs to the technical field of aquiculture. The larval fishes which are hatched for three days are put into the cultivation pond. The cultivate density of larval fishes is 150-200 thousand/mu. The larval fishes are cultivated to the Yellow Catfish with lengths of 2.5-3cm after 20-30 days. The cultivation pond is the earth pond with area of 2mu to 3mu. The thickness of slit on the base of pond is 25-30cm. The pond is placed with sustained-release bag which is filled with fertilizer. The sunny surface ofpond back part is provided with a temporary cultivation area of which the area is 1-1.5% of the area of cultivation pond. The bottom adopts the hard material which is nontoxic and smooth at the surface and has the ripple shape. The temporary cultivation area is additionally provided with oxygen heads with the density of 1-2/square meter. The invention adopts a technique of building the temporary cultivation ...

Egg meal beneficial to intestinal health of breeding animals and preparation method thereof

The invention discloses an egg meal beneficial to intestinal health of breeding animals, which comprises the following compositions in percentage by weight: 3-5 percent of water, 30-35 percent of crude protein, 14-18 percent of crude fat, 14-18 percent of ash content, 5-9 percent of calcium, 0.4-0.1 percent of phosphorus and the balance of active enzyme. A preparation method of the egg meal beneficial to the intestinal health of the breeding animals comprises the steps of washing egg, sterilizing, spraying, crushing eggs, mixing with film coating agents, emulsifying homogeneity, and spraying and drying, thereby obtaining the egg meal. The egg meal is characterized by being complete in nutrition, high in activity ingredient protection rate, convenient to use and store, and can be applicable to both aquaculture industry and poultry culture industry.

Method for self-purifying landscape water by using biological membrane and the device

Enrofloxacin monoclonal antibody as well as preparation method and application thereof

The invention provides an enrofloxacin monoclonal antibody as well as a preparation method and an application thereof. The preparation method of the enrofloxacin monoclonal antibody comprises the following steps: simultaneously carrying out immunogen and envelope antigen on enrofloxacin and a conjugate of the enrofloxacin and cationic bovine serum albumin, building an indirect checkerboard ELISA method so as to calibrate appropriate envelope antigen concentration and antiserum working concentration, analyzing affinity of to-be-detected enrofloxacin monoclonal antibody on a standard sample by indirect competition ELISA, selecting candidate rats based on the fact that the antiserum working concentration is greater than 1/50000 and 50% inhibiting concentration IC50 is not greater than 5ng/ml as indexes, strictly screening by a cell fusion technique to prepare hybridoma cell strains 14H4A1 and 14F8B1, inducing two strains of cells to generate ascitic fluid so as to obtain a target monoclonal ...

Nocardiopathy-resistant egg yolk antibody as well as preparation method and application of nocardiopathy-resistant egg yolk antibody

The invention discloses a nocardia disease resistant egg yolk antibody as well as a preparation method and application thereof, and relates to the technical field of biological medicines. A light chain sequence of the egg yolk antibody comprises a sequence as shown in SEQ ID NO.1, and a heavy chain sequence of the egg yolk antibody comprises a sequence as shown in SEQ ID NO.2. The preparation method comprises the following steps: carrying out enlarged culture on pathogenic bacteria nocardia to prepare inactivated vaccine immune laying hens, enabling the inactivated vaccine immune laying hens to generate the nocardia-resistant egg yolk antibody through immune response, collecting immunized eggs, and extracting the nocardia-resistant egg yolk antibody from the egg yolk by adopting a water dilution method to obtain the nocardia-resistant egg yolk antibody. Through verification, the egg yolk antibody has very strong binding capacity with nocardia and can effectively inhibit nocardia, and the ...

River crab feed and production process thereof

The invention discloses river crab feed, which comprises fish meal, vegetable dregs, corn, soya bean meal, inferior meal, soya-bean oil, shrimps, cuttlefish ointment, monocalcium phosphate, mineral substances for crabs, vitamin for the crabs, a binder, 0.7 to 14.0 mg/kg of cordycepin, 131.0 to 2,620.0 mg/kg of cordycepic acid, 0.1 to 2.0 mg/kg of adenosine and 290.0 to 5,800.0 IU/kg of superoxide dismutase. The river crab feed has the high utilization rate, reduces the pollution of feed residues to environment, avoids the negative effects of antibiotic residues and tolerance caused by the antibiotic residues, is safe and harmless to the craps and the environments and can enhance the immunity of the crabs and accelerate the growth of the crabs. The invention also provides a production process of the river crab feed, which has the characteristics of low cost and simple and convenient operation.

Large-scale cultivation method for summer fingerlings of Pelteobagrus fulvidraco

The present invention relates to a method for large-scale cultivating Yellow Catfish and belongs to the technical field of aquiculture. The larval fishes which are hatched for three days are put into the cultivation pond. The cultivate density of larval fishes is 150-200 thousand/mu. The larval fishes are cultivated to the Yellow Catfish with lengths of 2.5-3cm after 20-30 days. The cultivation pond is the earth pond with area of 2mu to 3mu. The thickness of slit on the base of pond is 25-30cm. The pond is placed with sustained-release bag which is filled with fertilizer. The sunny surface of pond back part is provided with a temporary cultivation area of which the area is 1-1.5% of the area of cultivation pond. The bottom adopts the hard material which is nontoxic and smooth at the surface and has the ripple shape. The temporary cultivation area is additionally provided with oxygen heads with the density of 1-2/square meter. The invention adopts a technique of building the temporary cultivation ...

All-natural feed additive for crustacean and preparation method thereof

The invention discloses an all-natural feed additive for crustacean which comprises the following compositions in percentage by weight: 15-30 percent of algal meal, 5-20 percent of egg microcapsule meal, 1-10 percent of moxa leaf meal, 5-10 percent of pumpkin powder and the balance of diluent. A preparation method of the all-natural feed additive for the crustacean comprises the steps of preparing materials according to the compositions in percentage by weight, and crushing and mixing the materials to obtain the all-natural feed additive for the crustacean. The additive can enhance the appetite of the crustacean and promote the intestinal tract health and digestion function of the crustacean by the cooperation of all the compositions in a non-polluted formula feed, as well as can enhance the self immunity of the crustacean, improve the survival rate of the crustacean and quicken the growth of the crustacean while the crustacean are unshelled in time.

Method for self-purifying landscape water by using biological membrane

Enclosure intercultural mode and aquaculture method thereof

The invention discloses an enclosure intercultural mode and an aquaculture method thereof. River crabs in a lake enclosure serve as the main aquaculture variety, and meanwhile, tropical fresh water Macrobrachium rosenbergii, Macrobrachium nipponensis, Odontobutis obscurus and Siniperca chuatsi are intercultured, wherein the Macrobrachium nipponensis, the Odontobutis obscurus and the Siniperca chuatsi are commonly seen in lakes. According to the intercultural mode, feedstuff can be fully utilized, pollution caused by river crab aquaculture is reduced, aquaculture benefits are improved, and the intercultural mode is environmentally friendly and efficient.