85 results about "Cherax quadricarinatus" patented technology

The present invention is technology of cultivating hybrid fresh water crayfish in rice and lotus field. The technology includes selecting rice and lotus field, sterilizing, applying basal fertilizer, transplanting rice or lotus, raising young crayfish, filtering to avoid escape and field management. The present invention has simple method, high crayfish yield, low cost and other advantages.

The invention discloses a cherax quadricarinatus breeding method. The method comprises the following steps of pond selection, pond disinfection, breeding water treatment, compound bacteria culture, shrimp fry stocking, feed feeding and pond management. According to the breeding method, by reasonably arranging a shelter, breeding compound bacteria, adding EM bacteria and traditional Chinese medicine powder into feed and the like, breeding is conducted under the condition of not using hormones or antibiotics, the method has the advantages of being ecological, environmentally friendly, less in investment, low in cost and convenient to manage, and the cherax quadricarinatus obtained through breeding is high in survival rate, high in growth speed, healthy and strong in physique, high in diseaseresistance and high in stress resistance.

The invention discloses a shrimp seed breeding and rearing method for cherax quadricarinatus. The method comprises steps as follows: (1), preparation of a breeding pool; (2), selection of parent shrimps; (3), culture of the parent shrimps; (4), pairing of the parent shrimps; (5), culture of fertilized eggs; (6), hatching management; and (7), nursing of the parent shrimps. The a shrimp seed breeding and rearing method for the cherax quadricarinatus is provided by construction of a culture pool, a mating pool, a hatching pool and a nursing pool, so that in the seed breeding stage, the egg mass rate of the cherax quadricarinatus reaches 70% or higher, the survival rate of the shrimp seeds reaches 80% or higher, the shrimp seed yield is 200% or higher of that in the prior art, and the method has remarkable economic benefits.

The invention discloses a method for breeding cherax quadricarinatus. The method includes the steps of preparation of a breeding pond, putting of cherax quadricarinatus seeds, breeding management andbreeding pond management, people pay attention to preparation work of the breeding pond before putting of the cherax quadricarinatus seeds and water quality optimization, and an external environment suitable for growth of cherax quadricarinatus is created; in addition, people pay attention to selecting and using of cherax quadricarinatus fodder. In the method, the fodder which is prepared from fish meal, barley pest powder, earthworm powder, shrimp shell meal, bean pulp, peanut meal, corn flour, wheat flour, soybean phospholipids, bone meal, lysine, methionine, multi-vitamins, composite mineral substances and other substances is selected and used, and is comprehensive in nutrient, has a remarkable promotion effect on growth of cherax quadricarinatus, the cost for breeding is low, breedingbenefits are remarkable, and the method is suitable for application and popularization of breeding of cherax quadricarinatus.

The invention provides a molecular marker C69483 for rapidly identifying hereditary characters of cherax quadricarinatus and application of the molecular marker C69483. The nucleotide sequence of themolecular marker C69483 is as shown in SEQ ID No. 1, and the nucleotide sequence of a primer pair for detecting the molecular marker C69483 is a forward sequence C69483F: TCACTACGAGCCACTTCAATTTG and areverse sequence C69483R: CTGGATTTATGTGAGAGAGAGAGAGGAGG. The molecular marker C69483 provided by the invention is not influenced by the tissue specificity of the cherax quadricarinatus and the environment, and is simple to use; the molecular marker not only can quickly and efficiently identify the genetic sex of the cherax quadricarinatus, but also can promote the establishment of an all-female or high-female breeding technology of the cherax quadricarinatus, and has a wide application prospect.

The invention relates to the field of agricultural culture, and provides a cherax quadricarinatus imitative ecological artificial scaled incubation culture technology. The technology is particularly applicable to domestic gannan area climate culture, and fills the blanks in China. According to the technology, the complete ecological imitating incubation culture of the cherax quadricarinatus, particularly chrtax quadricarinatus is realized. Along with the lobster fertilization, before the stocking of lobster seeds into a pond, the sizes of stones, silts and water plants in an incubation pond are continuously changed for adapting to the growth of lobster seeds; the temperature and the diet are synchronously and scientifically managed; particularly through the unique design of the pond, the bottom layer is underground water, the top layer is flowing spring water, and the middle is water with proper water temperature; three kinds of different ecological environments provide the complete growth environment for the lobster; through the culture by the technical scheme, the cherax quadricarinatus can be cultured to be heavier than 0.8kg.

The invention provides a molecular marker C98284 for rapidly identifying hereditary sex of cherax quadricarinatus and application of the molecular marker C98284. The nucleotide sequence of the molecular marker C98284 is shown as SEQ ID No.1, the nucleotide sequence of a primer pair for detecting the molecular marker C98284 is a forward sequence C98284F: TAACACCGAGCACCGACATTT, and a reverse sequence C98284R: TTGTTCACGCTACAGTGTTCCG. The molecular marker C98284 provided by the invention is not influenced by the tissue specificity and environment of the cherax quadricarinatus, and is simple to use; the molecular marker not only can quickly and efficiently identify the genetic sex of the cherax quadricarinatus, but also can promote the establishment of a cherax quadricarinatus all-female or high-female fry breeding technology, and has a wide application prospect.

The invention relates to the field of lobster culture and discloses an Australian cherax quadricarinatus in-vitro hatching method. After fertilized ova are obtained, the fertilized ova are cleaned and then are put into an in-vitro hatching plate to perform artificial hatching. The in-vitro hatching plate is provided with a front-arranged filter bucket matched with a water body, an ozone disinfection machine, a heating tube, an oxygen-enriching machine and a separation net, the fertilized ova are put on the separation net, bubble stones are arranged at the bottom of the in-vitro hatching plate to make a water flow so as to keep the fertilized ova slightly moving, the ozone disinfection machine controls regular disinfection in a time system mode, and the fertilized ova can be hatched into juvenile cherax quadricarinatus after about 40-50 days. By means of the Australian cherax quadricarinatus in-vitro hatching method, the infection rate of the fertilized ova can be reduced to be below 10%, the survival rate of hatching can be 90% or above, the survival rate of fertilized ovum hatching is greatly improved, the young prawn yield can be effectively improved, and remarkable economic benefits are produced.

The invention discloses a cherax quadricarinatus circulating water breeding system and method. The circulating water breeding system comprises a high-position water storage pond, a subsurface flow-vertical upward flow composite artificial wetland, a water quality restoration pond, a chlorella expanding culture bucket, a composite effective bacteria expanding culture bucket, a parallel breeding pond, a drainage channel, a water lifting inspection well and a water lifting pump which are all positioned in a heat-insulating greenhouse, the high-position water storage pond, the subsurface flow-vertical upward flow composite artificial wetland, the water quality restoration pond, the parallel breeding pond, the water drainage channel and the water lifting inspection well are sequentially communicated, the water lifting pump is used for lifting supernate in the water lifting inspection well to the high-position water storage pond, and the chlorella expanding culture bucket and the composite effective bacteria expanding culture bucket are communicated with the water quality restoration pond and controlled to be open and closed through valves. By the system, shrimp seed breeding rate is increased, shrimp seeds are synchronous in specification, supply of high-quality shrimp seeds is increased greatly, and development of cherax quadricarinatus breeding industry is promoted.

The invention discloses a functional biological feed for intensified breeding of cherax quadricarinatus, belongs to the technical field of breeding of the cherax quadricarinatus, and solves the problems of low stress, low immunity and low quality of the cherax quadricarinatus, which cannot be solved by a conventional feed. The functional biological feed comprises the following components in percentage by mass: 15-25% of imported fish meal, 6-10% of fermented peanut meal, 10-16% of fermented soybean meal, 3-5% of yeast cream, 4-8% of shrimp shell powder, 15-25% of high gluten flour, 8-15% of corn flour, 2-4% of calcium dihydrogen phosphate, 2-5% of soybean phospholipid, 2-4% of fish oil, 1-3% of soybean oil, 2% of a vitamin mineral premix and 2% of a functional additive. The invention further discloses a preparation method of the feed. The functional biological feed disclosed by the invention specially overcomes the defects that the stress and the immunity are reduced and the quality isreduced, which are possibly caused by an intensified breeding mode of the cherax quadricarinatus in a greenhouse or a workshop and the like, and has the effects of being balanced in nutrients, and capable of promoting growth, improving meat quality flavor, increasing the survival rate, reducing water pollution and the like.

The invention discloses a method for screening and breeding high-egg-carrying-amount cherax quadricarinatus parents, and belongs to the technical field of cherax quadricarinatus parent screening. Themethod comprises the following steps that (1) primary screening of the parents is carried out; (2) parent screening is carried out by taking a first abdominal segment width/full length as an index instead of an egg laying amount index; (3) enhanced cultivation and ripening of the parents are carried out; (4) mating and breeding of the parents are carried out; (5) egg-carrying shrimps are cultivated; (6) egg-carrying performance of the parents is evaluated; (7) young shrimps are cultivated indoors; and (8) offspring seeds are put into a pond. According to the method, the morphological characters related to the egg laying amount are used as breeding indexes, the egg laying amount characters of cherax quadricarinatus are indirectly selected, and the specification proportion of male and femaleparent shrimps and the matching number are adjusted, so that the problem that the egg laying amount cannot be measured in advance, egg-carrying parent shrimps are not suitable for excessive operation, the egg carrying rate is low and the like in actual production is solved, a technical scheme is provided for establishing a high-yield parent group of the cherax quadricarinatus, and a foundation islaid for realizing large-scale culture of the cherax quadricarinatus.

The invention belongs to the technical field of aquaculture, and discloses an in-vitro hatching method for cherax quadricarinatus embryos. The method comprises the steps that 1, ovigerous cherax quadricarinatus with the embryos in the mid-development stage and in orange yellow is obtained; 2, the embryos are slightly stripped along pleopods by using a comb, disinfected by using a disinfectant and washed with sterile water; 3, the washed embryos are hatched, the hatching water temperature is controlled to be 29-30 DEG C, water is replaced every 2-3 days, and dead embryos or dead shrimps are removed in time; 4, after being hatched, the embryos continue to be bred, when it is found that part of shrimp egg yolk sacs disappear, feeding is started, and feeding is carried out once every day until all the shrimp egg yolk sacs disappear to obtain shrimp seeds. The method greatly improves the egg carrying and hatching effects of parent cherax quadricarinatus, the hatching synchronism rate is relatively high, and a reference is provided for exploration and establishment of a breeding technology of the cherax quadricarinatus SPF seeds.

The invention discloses a young cherax quadricarinatus screening device and a use method, and belongs to the technical field of cherax quadricarinatus industrial aquaculture. The device comprises a screening device body, a water flow control device and an inducing device, the screening device body comprises a temporary aquaculture tank, a primary screening tank, a secondary screening tank, a primary screening plate, a secondary screening plate, a first escape-proof plate and a second escape-proof plate, the temporary aquaculture tank and a water drainage tank is separated through the first escape-proof plate, the temporary aquaculture tank and the primary screening tank is separated through the primary screening plate, the primary screening tank and the secondary screening tank is separated through the secondary screening plate, the secondary screening tank and a water inlet tank is separated through the second escape-proof plate, the inducing device comprises a light source and a bait, and the water flow control device controls water to flow into the temporary aquaculture tank from the secondary screening tank. According to the device, cherax quadricarinatus seeds with different specifications are captivated, and the survival rate of the cherax quadricarinatus seeds can be greatly increased.

The invention belongs to the technical field of aquaculture, and discloses an ecological comprehensive breeding method of cherax quadricarinatus-ctenopharyngodon idellus-hydrilla verticillata; the preparation before dropping fries mainly comprises pond selection, pond clearing, water grass transplanting, water inflow testing, net cage setting and the like; young shrimps dropping and management; ctenopharyngodon idellus stocking; aquaculture management mainly comprises scientific bait casting, water quality management, anti-escape, anti-enemy harm and the like; fishing harvest of cherax quadricarinatus and ctenopharyngodon idellus. The hydrilla verticillata can provide a shelter and natural botanical bait for cherax quadricarinatus, and in addition, can purify water, increase dissolved oxygen and lower water temperature so as to create a good ecological environment. In the early stage of breeding, ctenopharyngodon idellus feed on artificial feed, and residual bait feces sink to the bottom of water and can be eaten by cherax quadricarinatus, the bottom of a net cage becomes a food intake and sheltering place for cherax quadricarinatus, the fertility of the pond can be improved, and the survival rate and growth rate of cherax quadricarinatus are conducive to being improved; in the late stage of breeding, ctenopharyngodon idellus mainly feed on hydrilla verticillata, the comprehensive utilization of aquatic plants is realized, and the adverse effects caused by the overgrowth of the aquatic plants are avoided.

The invention discloses a spawning and separation method for cherax quadricarinatus. The method specifically comprises the following steps of S1, preparation of hatching water, wherein tap water is filtered by 70-80-mesh nylon sieve cloth after being fully aerated; S2, mating of parent shrimps, wherein female and male shrimps which develop well, have no parasites on the body surfaces and are samein color are selected and enter a mating pond; S3, separation of the parent shrimps and eggs, wherein after the parent shrimps spawn, the parent shrimps and the eggs are flushed by adopting water flowwith the flow speed of 2 m/s, and the parent shrimps and the eggs are separated; S4, disinfection of the shrimp eggs, wherein the shrimp eggs prepared in S3 are placed in a sodium chloride solution and soaked for 5-10 minutes; S5, preservation of the shrimp eggs, wherein the eggs and the parent shrimps are placed in a storage bucket, the storage bucket is internally provided with a partition plate with fine holes uniformly distributed in the surface, and the partition plate divides the storage bucket into two spaces for storing the parent shrimps and the shrimp eggs respectively. By means ofthe method, the uniformity of shrimp spawning is ensured, and the shrimp spawning and hatching efficiency is improved; the shrimps are effectively sterilized in the spawning process by means of the method, and the survival rate and hatching rate of the shrimp eggs are increased.

The invention discloses a breeding method of young cherax quadricarinatus. The method comprises the following steps of 1, construction of a young cherax quadricarinatus breeding pond; 2, parent selection; 3, mating of breeding cherax quadricarinatus; 4, breeding of fertilized eggs; 5, breeding of young cherax quadricarinatus. By means of the breeding method of young cherax quadricarinatus, an optimal cherax quadricarinatus egg breeding environment is selected, the oogenesis rate of female cherax quadricarinatus is high, the hatching rate of young cherax quadricarinatus is high, the hatching quantity of young cherax quadricarinatus for single female cherax quadricarinatus reaches 200-300 at a time, young cherax quadricarinatus is reasonably fed, and the yield of young cherax quadricarinatusis effectively increased; meanwhile, a net cage device is arranged in the young cherax quadricarinatus breeding pond, the situation that parents eat young cherax quadricarinatus is effectively prevented, the survival rate of young cherax quadricarinatus is increased, and the economic benefit is obvious.

The invention discloses a cherax quadricarinatus industrial early-breeding method and system. The method is characterized by including: setting small net cages for temporary rearing by adopting tandemgreenhouse ponds, so that cherax quadricarinatus can effectively adapt to water quality conditions of a local water source before entering a heating greenhouse; slightly and naturally increasing thetemperature in an early stage, and performing male and female partitioned breeding in the same pond after entering the greenhouse; when preset control conditions are reached, opening a partition device to enable complete mating of male and female cherax quadricarinatus and oogenesis; after mating of 70-80% of female cherax quadricarinatus is completed, taking out 80% of male cherax quadricarinatus, breeding in a special pond, and waiting for next mating; after separation of well developed juvenile cherax quadricarinatus from maternal bodies, falling from bottom holes, driving through a retaining plate, and bringing out along with water flow. Outer tandem greenhouses are used for drainage, water storage and purification and available for planting of water purification plants; in mass emergence in spring, effective utilization in pond large-scale fry culture areas can be realized, a culture site is expanded, and energy consumption is reduced. Compared with traditional greenhouse artificial breeding, the method and the system have the advantage that emergence time is 1 month ahead of time.

The invention discloses an ecological breeding method for cherax quadricarinatus and stone snails in a rice field. The method is composed of the steps of selection of a suitable rice field, timely planting of rice, stocking of young cherax quadricarinatus and young stone snails, feed feeding, daily management and harvest and overcomes the defect that comprehensive planting and breeding benefits ofthe rice field are low. Conditions are provided for simultaneous polyculture of the cherax quadricarinatus and the stone snails in the same rice planting field, the comprehensive planting and breeding potential of the rice field can be fully excavated, the process is simple and practical, operation is easy to understand, and the comprehensive planting and breeding benefits of the rice field can be improved by 30% or above.