13 results about "Captive bred" patented technology

The application discloses an artificial breeding and ovum collecting method of horseface fish, which can improve the quantity of obtained eggs, and the difference from the prior art is that the female fish without squeezed eggs is placed in a pool with water temperature of 18-20 DEG C for temporary breeding for 5-7 hours, taken out and placed in water with water temperature of 0-0.5 DEG C for 3-5 minutes, and then the female fish without squeezed eggs is subjected to second artificial egg squeezing and the egg grains are collected, the success rate of the second artificial egg squeezing can reach more than 95%, compared with the prior art of one-time egg squeezing, the quantity of obtained eggs can be improved by more than 20%, that is, the rate of inducing spawning is improved, and thus the quantity of fertilized eggs, the fertilization rate, the hatching rate and the total number of water flowers are improved.

The invention discloses a compound grease feed additive for improving breeding quality of channa maculata and application. The method comprises the following steps: (1) preparing experimental feed; the method comprises the following steps: respectively preparing an experimental group ARA 1.5 added with 1.5% of arachidonic acid and an experimental group ARA + PC added with 1.5% of arachidonic acid and 1.5% of phosphatidylcholine; (2) feeding; (3) after the culture experiment is finished, treating and detecting the channa maculata; (4) carrying out an artificial propagation test; (5) carrying out ovarian steroid synthesis related gene expression detection; and (6) carrying out data statistical analysis. By adding arachidonic acid (ARA) and phosphatidylcholine (PC) into the feed, the breeding performance of channa maculata and the quality of fry are improved, and the feed has very important significance for improving the aquatic product efficiency of high-quality fry of channa maculata in aquaculture.

The present application relates to a kind of artificial propagation method of Leucoglanis guichenoti.The artificial propagation efficiency of Leucoglanis guichenoti in prior art is low, and the rate of induced spawning, fertilization rate and hatching rate are not high.The propagation method of the present application comprises: using induced spawning agent (water temperature 13-19℃) to Leucoglanis guichenoti parent fish; the parent fish is put into spawning and hatching frame to spawn and fertilize naturally; after taking out the parent fish, keep the water level 5-15cm, and flow water hatching with 2-4 times / day exchange amount to obtain membrane fry; after another 24h culture, flat swimming fry is obtained.The induced spawning agent contains LRH-A2 and DOM, the dosage of female fish is LRH-A2 3-5ug / kg+DOM 5-10mg / kg, the dosage of male fish is LRH-A2 1-3ug / kg+DOM 2-5mg / kg, the effect time of induced spawning agent is 15-19h, the flow water hatching temperature is 17-19℃, and the duration is 42-45h.The method is simple in operation, low in cost, high in induced spawning rate, fertilization rate and hatching rate, can provide technical support for large-scale breeding of Leucoglanis guichenoti, promote the development of aquaculture industry, meet market demand, and has economic and social benefits.

This invention relates to the field of endangered aquatic biological resource protection and aquaculture technology, specifically to an integrated method for the harvesting, transportation, and domestication of the wavy-lipped barb, comprising the following steps: S1, behavioral adaptation-based nocturnal dive-fishing and decompression: during the wavy-lipped barb's nocturnal dormancy period, the target fish are gently induced into a pressure-regulating container; the fish are then safely transported to the water surface; S2, multi-stage live-preservation transportation: the fish treated in S1 are first transported via a live-water vessel for rehabilitation at sea, and then smoothly transferred via a live-water truck on land; S3, gradient-adaptive artificial domestication; S4, live germplasm resource preservation. This invention ensures that wild wavy-lipped barbs receive physiological protection at each transfer point, maximizing the maintenance of their internal environmental homeostasis, thereby increasing the overall survival rate to nearly 100% and providing high-quality, healthy parent fish for subsequent artificial breeding.

This invention discloses an artificial breeding method for the Oriental blackfish, belonging to the field of fish artificial breeding technology. It includes six core steps: broodstock selection and domestication, enhanced maturation cultivation, broodstock selection and anesthesia, spawning induction, artificial insemination, fertilized egg hatching, and fry rearing. One year in advance, suitable-aged wild Oriental blackfish are selected and domesticated in a flowing water pond. Before breeding, tocopherol is mixed into their feed to enhance gonadal development. High-quality broodstock are selected at a female-to-male ratio of 1:2 and anesthetized. A specific ratio of spawning inducing agent is injected using a two-injection method. Artificial insemination is performed in a standardized fiberglass circular fishpond under controlled water flow conditions. Fertilized eggs are incubated at 26±1℃ for 22 hours, and after hatching, they are transferred to a sterilized micro-flow water pond for rearing. This invention achieves a 100% spawning efficiency, a stable fertilization rate of over 95%, and a hatching rate exceeding 82%. It is simple to operate, cost-effective, and allows for large-scale breeding, providing key technical support for the conservation and population expansion of the Oriental blackfish.

The utility model relates to aquatic products breeding equipment technical field provides a kind of goldfish artificial propagation post-rehabilitation maintenance device.The goldfish artificial propagation post-rehabilitation maintenance device includes box, drives component and partition component.The inside of box has cavity, and top is equipped with opening;Drive component is located in the inside of cavity, for driving fish;Partition component is located in box, for switching between first state and second state, in first state, partition component divides cavity into not intercommunicating feeding area and medicated bath area;In second state, feeding area and medicated bath area are communicated.The utility model solves the defect that repeated fishing operation leads to stress reaction intensification in prior art, realizes the rehabilitation nursing operation of exempting from transfer processing, improves goldfish recovery quality and efficiency.

The application discloses a large water body eutrophication rapid treatment method and a special system thereof, and comprises a harbor type net enclosure captive breeding salvage unit, a water level self-adaptive cutting pump suction unit, a flume self-flow transportation unit and a solid-liquid separation resource unit. The method absorbs pollutants through net enclosure captive breeding purification organisms, and the whole net is dragged to a shore-based still water harbor by a tugboat during salvage. The organisms enter a cutting bin through a water level self-adaptive gate and the net is recovered synchronously. After the organisms are cut and broken into slurry, the slurry is lifted to an overhead flume by a cutter suction pump, and is self-flowed to a solid-liquid separation bin by gravity. Finally, the slurry is dewatered through filter pipe seepage, anaerobic fermentation and enhanced pressure filtration, so as to realize resource utilization of biogas, organic fertilizer and irrigation water. The application has very strong treatment capacity, is ecological friendly, has very low energy consumption and cost, and can rapidly improve the water quality of a large water body from poor V class to I-II class.

The present application relates to the technical field of aquaculture, and particularly relates to an artificial breeding method of Cottus hangi in Xingkai Lake. The present application uses LRH-A2 and HCG combination oxytocin to reasonably inject female parent fish and male parent fish, especially to twice injection of female parent fish, and strictly controls injection dose of each injection and reasonable control time interval, which not only can efficiently induce labor, but also can reach 95% of the female parent fish induction efficiency, and can obtain good ovum and semen, so that the ovum can be better fertilized, the quality of the fertilized ovum is improved, the hatching rate is improved, the stress of the parent fish is reduced, and the death of the parent fish is reduced. The present application improves the physical fitness of the parent fish through reasonable parent fish cultivation, and combines reasonable artificial induction operation and post-production nursing measures, so that the post-production death of the parent fish is reduced from multiple aspects, and the post-production survival rate of the parent fish is significantly improved, so that the repeated cultivation cost of the parent fish is reduced.

This utility model discloses a single-box circulating algae-shell symbiotic cultivation device, including a cultivation box with a lid, a water environment control system, and an attachment substrate device. A partition plate is erected inside the cultivation box to form a water flow channel between the partition plate and the inner wall of the cultivation box, and two functional areas are formed on both sides of the partition plate: a first area and a second area. The water environment control system includes a flow rate control unit, which is located in the first area; the attachment substrate device is located in the second area. The flow rate control unit controls the water contained in the cultivation box to circulate along the water flow channel at a preset flow rate. This utility model has a simple structure. When applied to the indoor artificial propagation of freshwater shellfish, it can improve the ecological balance between freshwater shellfish and algae, and promote the survival rate of artificially cultivated freshwater shellfish.

This invention discloses a biomimetic nest box for captive red pandas, belonging to the technical field of wildlife captive breeding facilities. The nest box includes a box body, a partition assembly, a keeper operation door assembly, an animal entrance / exit assembly, and a temperature control assembly. The partition assembly divides the inner cavity of the box body into upper and lower independent sections. The sides of the box body have two keeper operation doors with observation windows, and the front has an animal entrance / exit with a circular movable door connected to the box body via a hinge. The interior of the box body contains a thermometer and an ice pack container. This invention simulates the environment of a natural tree hole nest through biomimetic design, utilizes an independent dual-channel design to separate keeper operation from animal entry / exit, and combines passive temperature control to effectively reduce human interference and maintain the temperature inside the nest box within a suitable range. It aims to solve the problems of existing nest boxes being simple in structure, lacking biomimetic design, lacking temperature control methods, and inconvenient to operate, significantly improving the survival rate of captive red panda cubs during the breeding season.

This invention relates to a method for regulating the late autumn breeding of mandarin fish, belonging to the field of artificial fish breeding in aquaculture technology. The operation of this invention is as follows: (1) Inducing spawning in spring by injecting a high dose of a single oxytocin into the mandarin fish parent stock; (2) Under the action of the high dose of the single oxytocin, partial spawning is completed, achieving an average spawning volume per female fish of 20%-30% of the theoretical spawning volume in spring; (3) After spawning until the end of June, controlled feeding management is carried out to reduce the amount of feed, so that the fish are in a nutritional state of maintenance or slow growth; (4) In July and August, nutritional enhancement cultivation is carried out, and sufficient feeding is restored for a period of time before formal spawning to promote the rapid secondary development of the gonads of the parent mandarin fish; oxytocin is injected at a conventional effective dose to induce artificial insemination of the parent mandarin fish, resulting in concentrated spawning, achieving an average spawning volume per female fish of 80%-90% of the spawning volume in autumn. This invention can achieve the dual use of mandarin fish parent stock in one year through conventional hormone injection and feed management.

This invention discloses a method for the artificial breeding and selection of small plateau native ornamental fish, belonging to the field of aquaculture technology. The method includes: S1 broodstock domestication, S2 hormone-free spawning induction, S3 fertilized egg hatching, S4 graded initial domestication, and S5 juvenile fish selection. In S2, the broodstock are placed in a spawning induction device, where visual mirror stimulation is generated through a reflecting mirror. Combined with the synergistic effect of gradually increasing light intensity from 8 hours to 12 hours and water temperature from 16°C to 22°C, and the weak electric field generated by the bottom microelectrode array (intensity below the fish's perception threshold, waveform is sine or square wave), natural spawning is induced without the addition of exogenous hormones, achieving a spawning rate of over 87.5%. In S4, the fry are fed graded micro-particle feed in three stages, with particle sizes of 80-120μm, 120-160μm, and 160-200μm, respectively. The fry feeding rate reaches over 87%, and the survival rate at 35 days of age reaches over 78%. This invention enables the artificial breeding of native ornamental fish in the plateau with zero hormones, and is simple to operate with a high survival rate.

The application provides application of a beet armyworm larva as a host in breeding of Exorista sp. and belongs to the technical field of biological control of agricultural pests. The application first proposes that the beet armyworm larva can be used as a host for artificial breeding of Exorista sp. The method for artificial breeding of Exorista sp. provided by the application can efficiently and stably perform artificial breeding of Exorista sp., and the method provided by the application uses the beet armyworm larva as a host, is simple to operate, has a high parasitic rate and is suitable for laboratory breeding and large-scale production. In addition, the method provided by the application has a high parasitic rate and a large number of flies, can provide a stable population of parasitic flies for field release and has a good application prospect.