77 results about "Cannibalism" patented technology

An three-dimensional intensive culture technique of shrimps, crabs and shellfish in a seawater pond comprises the following steps: the pond is cleaned up before stocking, the bottom of the pond is solarized, a central canal and a circular canal are excavated, and feed water is disinfected and sterilized with medicines; fresh seawater is fed, the water quality culture, fertilization and algae culture are carried out, a lifting device for a swimming crab breeding cage is prepared, and lines are parallel set up at the two ends of the culture pond with each line spaced 50cm; and 30cm higher than the surface of the water, the cage is suspended every 50cm, the inside of the cage is provided with fine sand, the outside of the cage is sheathed with a plastic netting, benthonic seashells are put into the cage for the first, and the stocking density is 30 benthonic seashells per mu, then the stocking of prawns is carried out, and the stocking density is 5000 prawns per mu. By adopting the three-dimensional multi-species hybrid culture technique of shrimps, crabs and shellfish in a seawater pond, the water layers of the stocking ponds can be fully utilized, the utilization rates of each water layer of the stocking ponds, stocking devices and manpower are further improved, the water purification capacity of the seashell can be fully utilized, and the swimming crabs are suspended in a cage, thus avoiding cannibalism and catching and killing the shrimps and seashells in the same pound; Furthermore, the three-dimensional intensive culture technique provides adhesion and sheltering objects for prawns, and achieves the purposes of improving yield and increasing economic benefits.

The invention relates to a method for producing protein feed material by utilizing food wastes, belonging to the field of solid waste treatment. The method comprises the following steps: separating and crashing food wastes, and then carrying out heat-moisture treatment; adding bran in solid matters after solid-liquid separation, and inoculating appropriate among of microbes for anaerobe fermentation so as to obtain the protein feed material. Microbes of the solid matters are converted by adding 10-15 percent of bran, taking aspergillus niger, candida utilis and lactobacillus as mixed fungicides according to the ratio of 1: 2: 2 with the inoculation amount of 0.5-2 percent and carrying out anaerobic fermentation for 35-55h at 30 DEG C. The treated product reaches requirements of Feed Hygiene Standard (GB13078-2001) in China, is not easy to go bad and easy to be stored, and bovine-derived and ovine-derived materials of the product are measured to be both negative. The method can effectively kill pathogenic microbes in the food wastes, converts macromolecular proteins, such as animal-based protein, and the like into micromolecular proteins that are absorbed more easily, thereby also reducing the risks caused by isogenous invitro-cannibalism of food feed products.

The invention belongs to natural enemy insect predacious stink bug raising technology field, more specifically a method for raising natural enemy insect southern minute pirate bug indoor in great deal and a raising box. The raising method comprises the steps of southern minute pirate bug adult and nymph raising; the existing southern minute pirate bug raising method is improved based on the biological characteristics of the southern minute pirate bug; and a method for raising the predacious natural enemy minute pirate bug in different states indoor is provided. According to the raising method, a suitable oviposition environment for the minute pirate bug is provided and the male and female pairing number can be increased; the cannibalism among the nymph and non-natural death are effectively reduced; the nymph survival rate and the imago obtaining rate are raised; and the tedious procedure of individual test tube raising, replacing and cleaning is simplified. According to the invention, the survival rate in each state is high; the procedure is simplified; the demand for raising the southern minute pirate bug indoor in great deal is satisfied; the enough insect source for deep indoor research is provided; at the same time, the key technology support for predacious stink bug propagation and raising and application in agricultural biological control are provided.

A composition including a bait and a borate is used to mitigate a population of target insects and / or mollusca. The composition may include attractive by-products of agriculture and manufacturing with or without semiochemicals or biopesticides prepared as point source units (such as pellets or microcapsules). The by-products attract insects and / or mollusca to a food source for the purpose of mitigating the target organism. The bait is combined with borates and is pelletized and / or encapsulated into micron size particles. The pelletized and / or encapsulated particles are broadcast (spread) over areas infested with the target insect. The insects ingest the composition and regurgitate the composition to the remainder of the insect population. Significant mitigation of the population of the target insects results with little to no effect on the environment. The composition is also passed on to the next generation due to cannibalism of the target insects. A feed through process wherein the composition is fed to an animal and is contained in the manure of the animal deposited as a point source location. The composition is either mixed in with the food of the animal or placed directly in the gut of the animal using a ball and gun method. The target insects are attracted to the manure and upon ingesting the manure, ingest the composition and are dispatched.

The invention relates to the field of aquiculture, in particular to a system and method for cultivating anguilla marmorata. The system for cultivating anguilla marmorata comprises a water purifying system and an anguilla marmorata pipeline perching system, wherein the water purifying system is used for decomposing and absorbing the excretion of the anguilla marmorata and organics in the anguilla marmorata cultivating system so as to ensure the water quality of the anguilla marmorata cultivating system, avoid using too much fresh water, reduce the pressure of the environment from the anguilla marmorata cultivating system, save electric consumption, and reduce the cultivating cost of the anguilla marmorata; simultaneously, the anguilla marmorata pipeline perching system improves the cultivating density of the anguilla marmorata and reduces the cannibalism rate of the anguilla marmorata. Compared with a running water open type cement pond cultivating method, the cultivating method of theanguilla marmorata cultivating system disclosed by the invention improvise the production rate of the anguilla marmorata by more than 25%, saves power consumption and fresh water resource by more than 40%, increases the amount of the anguilla marmorata cultivated in per square meter of water by more than 50%, and enhances the the comprehensive cultivating benefit by about 45%.

The invention discloses a special LED illumination method and system for laying hen and breeding chicken scale breeding. LED lamps A or LED lamps B are mounted in an enclosed chicken house or a half-open chicken house. The average light intensity of the light reaching the chickens breeding plane and emitted by the LED lamps A or LED lamps B is 5-80 Lux, wherein the average light intensity is adjusted through an LED dimming controller or through the replacement of LED lamps of different power. The lighting time is controlled through a manner that a manual switch, a relay switch or an automatic timer is connected to a power supply. The dominant wavelength of each LED lamp A is 584.0 nm, the color temperature of each LED lamp A is 2700K QUOTE plus or minus 10%, the color ratio of R is larger than 20%, and the color ratio of B is less than 1.5%. Each LED lamp B is composed of white beads and red beads which are uniformly arranged in a cross manner with the ratio being 1:5-5:1. The method and system are mainly applied to laying hen and breeding chicken scale breeding in laying hen or breeding chicken houses, can improve the laying rate, can increase the egg yield, can reduce the poultry cannibalism, and can enhance the physical health of laying hens or breeding chickens.

The invention discloses a method for integrated culture of rice-finless eel-crayfishp-trionyx sinensis. The method comprises the following steps: placing myriophyllum aquaticum in a ring-shaped ditchof a paddy field; putting crayfish seedlings in April or August, putting trionyx sinensis seedlings and cipangopaludina cahayensis in May, and putting finless eel seedlings in late June to early July;performing feeding; and catching crayfish in early June or early October, and catching finless eels and trionyx sinensis in November to December. According to the method for integrated culture of therice-finless eel-crayfish-trionyx sinensis, ecosystem biodiversity of the paddy field is improved, cannibalism degree of the crayfish is reduced, requirement for live baits of the finless eels and the trionyx sinensis is satisfied; and the method has the advantages of higher biological diversity, easy catching, adequate supply of live baits, more stable culture yields, higher economic benefits, and the likes.

The invention discloses a method for breeding octopus in a man-made pond, comprising the following steps: using a sea breeding manner in a man-made pond with the seawater depth of the pond being 1.5-2m, and oxygenating for the seawater with an oxygenating device; placing a breeding tank at the bottom of the pond by a polyethylene rope with a number of at least 15 per square meter; placing seedlings that are at least 3 cm long in the pond with a breeding density of 10-15 per square meter; and placing mulluscs lower in living bodies such as quadrangle clams and short necked clams as well as small crabs for one time or many times according to the breeding density and the ingestion intensity. The method improves the pond breeding environment, satisfies the burrow habit and the requirement ofbait nutrition, changes the habit of cannibalism and improves the survival rate, the growth speed and the economical benefit of the octopus.

The invention discloses a culturing device with a function of fish screening. The device comprises a water tank, the inner bottom of the water tank is provided with a plurality of partition plates arranged at intervals, clamping grooves are formed in the upper portions of the two sides of each partition plate, and each clamping groove is internally provided with a screen in a clamping mode. The water tank is divided into a plurality of independent culturing tanks by the partition plates and the screens. A water draining hole is formed in the middle of the bottom end of each culturing tank, the sieve numbers of the two adjacent screens are different, and the sieve numbers of all the screens are decreased progressively in sequence from large to small. The water tank is further connected with a water inlet pipe assembly and a water draining pipe assembly. According to the culturing device, the water tank is divided into a plurality of the independent culturing tanks by the partition plates and the screens, sufficient activity space can be provided for small individual fingerlings, and the phenomena of attack and cannibalism among the individuals of the fingerlings can be effectively avoided.

The invention relates to the field of plant protection and an insect breeding technology, in particular to a single-end feeding method of agriphila aeneociliella. The method comprises the steps that a single insect breeding case is adopted to serve as a breeding tool, and entangled cocooning and cannibalism among larvae can be avoided; mass propagation of pathogenic microorganisms such as bacteria and viruses can be effectively inhibited, and bacterium and virus transmission among insects is avoided; degerming and cleaning are conducted conveniently at any time, and a disinfection measure is adopted; timely replacing on feed is facilitated, and group consistency is kept; sterile vermiculite with the moisture of 20% serves as a pupa cell making medium, mature larvae are put on the medium surface, and pupating of the larvae and adult eclosion are facilitated.

The invention relates to a portunus trituberculatus miers ecological bait. The invention is characterized in that the ecological bait consists of the following raw materials by weight percent: 97-98.9% of fundamental nutrition composition, 1-2% of medicine composition and 0.1-1% of other composition. The ecological bait has the advantages of having the balanced nutrition composition, meeting all physiological needs of nutrition in the artificial culture of single species and in the mixed culture of the portunus trituberculatus miers, effectively reducing the cannibalism rate of the portunus trituberculatus miers, improving the growing speed of the portunus trituberculatus miers, reducing the cultivation pollution, improving the quality of the portunus trituberculatus miers, etc.

The invention discloses a cuttlefish aquaculture pond capable of preventing fighting and cannibalism and easy to clean. The cuttlefish aquaculture pond comprises a ground surface, hanging frames, an aquaculture pond body, oxygen outlet heads, motors and a dirt collecting area. A platform is connected with the upper side of the ground surface, an oxygen pipe is arranged under the platform, feeding columns are attached to the interiors of the hanging frames, aquaculture barrels are arranged in the aquaculture pond body, and holes are formed in the aquaculture barrels; the bottoms of the aquaculture barrels are fixedly provided with a second filter screen, and the lower side of the second filter screen is provided with a first filter screen; a cuttlefish egg adhesion device is arranged above the first filter screen, and the oxygen outlet heads are connected with the oxygen pipe; the feeding columns are arranged behind the oxygen outlet heads. According to the cuttlefish aquaculture pond capable of preventing fighting and cannibalism and easy to clean, the feeding columns and the hanging frames are arranged, so that the problems that cuttlefishes are frightened and are likely to jet ink when bait is poured into the pond suddenly, accordingly the ink contaminates the environment in an aquaculture pond, people need to frequently replace water in the aquaculture pond, and water resource waste is increased are solved.

The invention puts forward a vulgaris half-isolated mariculture cages and farming method. The vulgaris half-isolated mariculture cages and farming method achieves vulgaris mode in half-isolated and the phenomenon that the vulgaris is easy to cause cannibalism in traditional culture cages is overcame, and the survival rate of the vulgaris is seriously influenced. The invention completes the cultivation of the vulgaris, by going through selection of breading area, setting of cages, capture of vulgaris offspring seed, development of management, release of bait and acquirement of harvest the processes, among which the container body has semi-closed structure making use of the constructure of the cages and is composed of a mesh enclosure and a attachment plaque. Net layer that is composed of different mesh size is equipped on the external rim and artificial vulgaris in a honeycomb structure configuration is equipped on the surface of the attachment plaque and a isolated panel is equipped on the external rim. The invention has the advantages that vulgaris half-isolated mariculture mode is achieved, the rate of cannibalism is lowered and the survival rate of the vulgaris is improved.

The invention discloses a method for fast cultivation of centipedes through a greenhouse, and the greenhouse is established for performing warming-up cultivation in winter so as to break the winter hibernation feature of the centipedes and enable the centipedes to be always in fast growth state. A plastic film is stuck on the wall for effectively preventing escape, flour weevils are fed, and meat, vegetables and the like are used for assistance, thereby providing foods with comprehensive nutrition and sufficient water, and preventing cannibalism. Warming up is performed in the winter, cooling is performed in summer, the temperature is the house is kept at 20-35 DEG C, the water content in culture soil is 15-24%, the atmospheric moisture is 55-75%, and ventilation and air exchange are regularly performed for eliminating diseases and pests. During the whole growth stage of the centipedes, antibiotics, pepsine and ecdysone are often fed, thereby reducing the incidence rate, enabling the ecdysis of the centipedes to be smooth, improving the survival rate and shortening the growth cycle. The centipedes cultivated by adopting the method have the characteristics of high survival rate, short growth cycle, high yield, low cost, high economic benefits and the like.

The invention provides a premixing agent for preventing and treating cage-cultured chicken cannibalism, which aims at solving the problems that in the prior art, considered factors for preventing and treating the chicken cannibalism are incomplete, used raw materials have high cost and potential safety hazards, and the like. The premixing agent is prepared according to the nutrition reason causing the chicken cannibalism. The used raw materials have wide sources, safety and reliability of the used raw materials can be ensured when the used raw materials are used in feed processing, and the fact that no food safety risk exists in the feed processing can be ensured. In addition, the premixing agent has low cost so that the premixing agent is suitable for livestock farms with different scales and can be used for preventing and treating the cage-cultured chicken cannibalism caused by nutrition. By means of the technical measures, the premixing agent for preventing and treating the cage-cultured chicken cannibalism is characterized by comprising the following raw materials, by weight, 5-10% of vitamin C (VC), 10-25% of methionine, 2-5% of complex vitamins, 20-35% of medical stones and 30-50% of feather meal.

The invention relates to a method for cultivating Hemifusus tuba with a net cage in a hanging way. In the method, a single-layer cage-shaped cultivating cage tool consisting of a cage plate (1) with the diameter of 45-50cm and a polyethylene net (2) with the mesh size of 0.5-1.5cm is used for cultivating young Hemifusus tuba with the average height of 30-40mm and the average weight of 2-3g in a hanging way and 10-15 young Hemifusus tuba are cultivated in each cage. The method comprises the following steps of: filling the young Hemifusus tuba in the cultivating cage tool; hanging in a hanging pond at a water layer with the depth of 0.7-1.4m, wherein the distance between every two adjacent cages is 0.2-1m; feeding the Hemifusus tuba with fresh oyster with shell every 10 days; cleaning the net cage before feeding, cultivating until harvesting time of the Hemifusus tuba. The method disclosed by the invention improves the living environment of the Hemifusus tuba to the maximum extent and reduces the diseases caused by the pollution such as residues, wastes and the like, and reduces the cannibalism phenomenon, thereby effectively improving the survival rate and the growth speed of the Hemifusus tuba; simultaneously, the method can reduce the feeding quantity, the feeding time and the labor intensity.

The invention discloses a freshwater shrimp blocking-net-type intercropping method and belongs to the technical field of freshwater aquaculture. A blocking-net-type freshwater shrimp and trionyx sinensis intercropping mode is adopted, and aspects like culture pond building, fry stocking, culture management and feed quality are comprehensively improved; freshwater shrimp and trionyx sinensis are separated by using a blocking net for respective culture, and freshwater shrimp small in body size can enter a deep water area to serve as living food for trionyx sinensis, so that feed consumption of trionyx sinensis can be lowered, and culture cost of trionyx sinensis is lowered while culture quality of the same can be improved; culture density of freshwater shrimp can be controlled effectively, cannibalism is reduced, and improving of culture quality and yield is facilitated. Ecological niche characteristics of different organisms like alga, water plants, grey chub, freshwater shrimp and trionyx sinensis are taken into consideration comprehensively, a proper intercropping proportion is set, ecological balance of a culture pond is maintained, and water quality is adjusted, so that the method is an environment-friendly and high-efficiency culture mode and suitable for large-scale popularization and application.

The invention discloses an ecological polyculture method for portunus trituberculatus mainly cultured in a pond. The method is characterized by comprising the steps of cleaning the pond, culturing ruditapes philippinarum, fenneropenaeus chinensis and the portunus trituberculatus, feeding bait and the like. By using ecological complementarity of the ruditapes philippinarum, the fenneropenaeus chinensis and the portunus trituberculatus for polyculture, the method of the invention fully utilizes the natural bait, increases the spatial stratification of the ecological structure of the culture pond, improves the stability of the environment of the culture pond and solves the problems of cannibalism of the portunus trituberculatus, insufficient bait, diseases, degradation of water quality and the like during the culturing, so that the technical effects of high yield, high efficiency and environmental protection are realized.

The invention discloses a living body transportation method of Octopusochellatus seedling breeding and releasing, and relates to the technical field of the living body transportation of the marine product culture. Rice hulls are used as a substrate, the rice hulls are softer, and cannot hurt the Octopusochellatus young seedlings in the shaking process. The rice hulls can be suspended in the seawater so as to form countless enclosed spaces, so the probability of cannibalism of the Octopusochellatus young seedlings is reduced. The use water for raising and transporting the Octopusochellatus young seedlings is the seawater in which suspended particles are removed, and the used seawater for raising and transporting the Octopusochellatus young seedlings is the same as the seawater of the natural spawning site sea area of Octopusochellatus seedling breeding and releasing, so the Octopusochellatus young seedlings can adapt the natural sea area environment as soon as possible, the effect of the environmental change to the survival rate of the Octopusochellatus seedlings is reduced, and the survival rate of the seedlings is improved. The method has the advantages of no anesthetics, no food quality and safety risk, no gradient cooling, no effect to the survival rate of the Octopusochellatus young seedlings, cheap cost, security and environmental protection, and high survival rate of the seedlings.

There is provided a method for preventing the occurrence of abnormal behavior such as cannibalism, fright behavior and collision death during rearing, storage and transportation of tuna of larva, juvenile and young adult fish stages, particularly, of those periods in the seed production. The abnormal behavior during rearing, storage or transportation of tuna is prevented by controlling their visual stimuli, particularly, by making wall and bottom surfaces of a rearing water tank coming with contact with the environment transparent, setting a visual stimulus-buffering material through which light transmits partially in both straight and diagonal directions, maintaining the tuna in the presence of colored fine particles in the environment, or controlling the fluctuation in illumination of the environment, or a combination thereof.Alternatively, death of tuna due to collision with a rearing water tank wall is prevented by stimulating their visual sense.

The invention discloses a method for reducing the wild nature of cage raising breeding local chicken by a non-breeding technology. By aiming at the current condition of low breeding value of the breeding local chicken due to fighting nature, food fighting nature, poultry cannibalism, cage raising stiffness and cage raising thought-impeding stress caused by the wild nature of local chicken, technical measures such as ideal chicken house temperature, humidity, illumination intensity, illumination time and lamp light color are taken for chicken groups in the stages of brooding, raising and egg laying; the wild nature generating rate of the breeding local chicken is reduced. The defect that the breeding local chicken has great wild nature and is difficult to raise is overcome; the egg laying performance and the breeding performance of the breeding local chicken are obviously improved; the raising benefits of the breeding local chicken are further improved.

The invention discloses an out-of-season portunus trituberculatus larva breeding method. The method comprises three steps of selection of parents, hatching of ovigerous crabs and larva breeding. The method has the advantages that the artificially bred parents are selected to achieve full-artificial breeding, the industry problem of relying on sea fishing for breeding wild ovigerous crabs is eliminated, and large-scale larva breeding is facilitated; mid-September is selected as the time for hatching the ovigerous crabs, which avoids the precocity of crab larvae in the current year and also ensures larger specification when the products appear on the market in June-July of the next year; according to the developmental stage of the crab larvae, different anti-disability opacifying agents areselected, reduce the cannibalism of the crab larvae, make the crab larvae develop simultaneously and rapidly, also have a function of regulating the water quality, and greatly increase the survival rate; specially, water is changed by adopting a crab larva taking-out mode, the workload is not increased, but an artificial selection effect on the crab larvae during crab larva taking-out is achieved,and sick and weak crab larvae with poor vigour can be eliminated, thereby improving the whole quality of the crab larvae.

The invention discloses a low-dam high-net swimming crab cultivation water storage pond having a self-discharging function. A water storage pond space is constructed according to characteristics of swimming crabs, the rectangular water storage pond is formed by being surrounded by a pond dyke built on a beach, the upper end and the lower end of the water storage pond are arranged in the same direction as the tiding direction, an annular ditch is disposed between the periphery of a beach face and the pond dyke, the pond dyke at the upper end and / or the lower end of the water storage pond is provided with an overflow dam, and the beach face is internally at least provided with one middle ditch in the same as the tiding direction. The water storage pond comprises an ingestion site, an inhabiting site and a hibernating site, pollution discharge is performed by utilizing tidal energy, an all-dimensional ecological environment space for inhabitation, oversummer and overwintering and the like of the swimming crabs in a juvenile crab bearing period, a growth period, a mating period and a fattening period, an energy-saving self-discharging ecosystem is formed, various beach resources and natural energy are fully utilized, cannibalism is reduced, diseases are prevented, the survival rate is improved, the quality and yield are improved, and the ecological cultivation and healthy development of the beach are promoted.

The invention relates to a pan-type fry culturing method for Procambrus clarkii, in particular to completing the process of breeding Procambrus clarkii fries in a pan-type container, belonging to the technical field of aquiculture. The method is characterized by comprising the following four steps of fry breeding pan selection, fry breeding preparation, parent shrimp stocking and management and shrimp fry breeding. Only one female shrimp or ovigerous shrimp is put in a fry breeding pan, and therefore, the specification of bred shrimp fries is regular, the cannibalism rate is reduced, and the shrimp fry survival rate is improved. The fry breeding pan is put in a dark fry breeding room, and therefore, the development rate of the sex gland of the female shrimp is high; the fry breeding operation is convenient, and the fry breeding efficiency is higher than that of the traditional fry breeding mode. The pan-type bred fries are not influenced by the change of the external climate; the shrimp fries hatched out on the same day are raised under the same ecological condition, being beneficial to developing mass selection. The invention is suitable for being popularized and applied in domestic Procambrus clarkii breeding farms and scientific research departments.

The invention discloses a fish culture feeding device comprising a bait box, a bait casting plate driven by a casting motor, an integrated control box, float balls and at least one trigger rod connected with the integrated control box through an interchangeable universal head. The trigger rod is provided with a thin film pressure sensor. An acceleration sensor and an integrated control module are arranged in the integrated control box. The integrated control module is composed of a control circuit comprising a single-chip microcomputer. Foraging touch behaviors of fish are determined by the acceleration sensor and the thin film pressure sensor, and the results are fed back to the single-chip microcomputer. With the control of the single-chip microcomputer, the bait casting motor casts baits in a timed and quantified way, such that bait casting adequacy and uniformity are realized. Fish individual growing condition is uniform, intraspecific cannibalism possibility is reduced, and survival rate is improved. The control device and control method realize timed and quantified uniform bait casting based on fish feeding habits.

The invention discloses a feed additive capable of protecting spotted-brown chickens from cannibalism. The feed additive is prepared from, by weight parts, 45-55 parts of poria cocos, 45-55 parts of divaricate saposhnikovia root, 45-55 parts of polygala tenuifolia, 45-55 parts of curcuma aromatica, 45-55 parts of semen ziziphi spinosae, 45-55 parts of platycladi seeds, 45-55 parts of tuber fleeceflower stem, 20-30 parts of radix codonopsis, 30-40 parts of gardenia, 50-60 parts of amur cork tree bark, 15-20 parts of scutellaria laterifolia, 15-20 parts of ephedra, 15-20 parts of glycyrrhiza uralensis, 45-55 parts of elm cake, 45-55 parts of stir-fried medicated leaven, 45-55 parts of coloured malt, 45-55 parts of gypsum, 18-20 parts of gentiana macrophylla and 4-6 parts of mulberry twig additives. The additive has effects of clearing heat, performing detoxification, tonifying the spleen and promoting digestion. The additive has remarkable effects of preventing the spotted-brown chickens from cannibalism, the prevention experiment effective rate is over 95%; the feed additive is applied and popularized to 460000 test chickens, and the average effective rate is over 97%.

The invention discloses an epinephelus culture method. An outdoor ecological pond and an indoor fry breeding pond are connected through a pipeline, alga water in the outdoor ecological pond is pumpedinto the indoor fry breeding pond, a water discharge tube is arranged at the bottom of the indoor fry breeding pond and communicates with the outdoor ecological pond, tail water in the indoor fry breeding pond is discharged into the outdoor ecological pond, then a relay circulation epinephelus fry culture system with indoor fry culture and outdoor alga culture is formed, respective defects of ecological fry culture of an epinephelus pond and fry culture of factory-like circulation water are solved, advantages of the two fry breeding methods are taken into play sufficiently, SS type rotifera ofa sufficient density are provided as a starter feed for larva fishes starting to take feed at a starter stage, it ensures that most larva fishes can start to take feed smoothly at a first moment at the starter stage, live baits of a high density are continuously maintained at a larva fish development stage, all larva fishes can develop relatively synchronously at an early stage of fry breeding, individual differences of a same batch of fries can be reduced as much as possible, cannibalism can be avoided, the fry number can be greatly increased, and the fry rate can be increased.

The invention relates to the field of fish culture, and aims to provide a method for domesticating mandarin fish fries. The method comprises the following steps: selecting mandarin fish fries with consistent body lengths and weights as domesticating objects; putting the selected mandarin fish fries into a domestication pool for acclimatization, carrying out cluster training for three days, and then sequentially carrying out eight-day chilled bait fish domestication, nine-day soft granular feed domestication and nine-day hard granular feed domestication. According to the method provided by theinvention, chilled bait fishes and a soft granular feed are used as intermediate domestication transitional baits for domesticating the mandarin fish fries which are subjected to cluster training, themandarin fish fries are subjected to continuous domestication to completely eat a hard granular feed, and a certain amount of the adapted bait in the previous stage is continuously fed after the newbait is fed in each feed changing process so as to ensure that the mandarin fish fries are fed fully, the probability of cannibalism is then reduced, the domestication survival rate and the growth rate are effectively improved, the operation is simple, and the large-scale production is facilitated.

The invention concerns an agent containing a yeast derivative comprising 5'-nucleotides and / or peptides of at least 1000 daltons useful for preventing and / or treating cannibalism in wild animals, its preparation and its use.

The invention provides a combined LED light source for reducing the cannibalism rate of garrupa and application thereof. According to the method, the purpose of reducing the cannibalism rate is achieved by combining the environment control technology and an accurate feeding manner by means of the environment control technology of creating a specific light environment, the illumination time and the illumination intensity in an industrialized garrupa aquaculture workshop. The method is specially developed according to the avoidance tendency of main garrupa culture species such as saddletail groupers, pearl gentian groupers and epinephelus septemfasciatus to the specific spectra, light intensity and illumination period and the appetite regulation and control rules of epinephelus coioides juveniles. By means of the method, the cannibalism of the garrupa can be effectively restricted, and economic losses caused by cannibalism during the intermediate culture period of industrialized garrupa seedlings are remarkably decreased. Moreover, operations is easy and convenient, the automation degree is high, the health, safety, energy conservation and environment protection are realized, and the method has high application and popularization value.