338 results about "Egg incubation" patented technology

The present invention relates to a recirculating marine aquaculture process for production of a crab species, including (i) a broodstock conditioning, (ii) spawning, (iii) egg incubation, (iv) larval growth, (v) nursery post-larval growth, and (vi) grow-out of the crab to a final product weight, in which each stage (i)-(vi) of the process involves operation in an aqueous medium that is coupled in liquid recirculation relationship with means for removing waste components from the aqueous medium and returning purified aqueous medium to the external environment. The process involves operation in a closed, recirculating aquaculture system in which photoperiod, water temperature, water chemistry, and diet are optimized and then continuously monitored and controlled to obtain optimal production at each of the six phases (i)-(vi) of the life cycle.

The invention relates to a device and a method for detecting hatching egg incubation quality based on computer vision, belonging to the technical field of agricultural product detection. The device comprises a CCD camera, an optical chamber, an object stage, a light source, an image acquisition card and a computer. The method comprises the following steps: adopting the CCD camera to acquire a perspective image of an egg, and then transmitting the image into the computer through the image acquisition card; processing the image to extract a color feature parameter; and discriminating whether theegg is fertilized or not according to a Bayes discrimination model for egg incubation quality. The invention detects the hatching egg incubation quality by applying a computer vision method and can reduce the labor intensity and the interferences of artificial subjective factors and obtain a more objective and accurate result. Proved by experiments, when the method is used for detecting the hatching egg incubation quality, the detection accuracy on the sixth day of a white-shell hatching egg reaches 100 percent, and the accuracy for verifying the model reaches 100 percent; the detection accuracy on the sixth day of a brown-shell hatching egg reaches 97.1 percent, and the accuracy for verifying the model reaches 100 percent.

The invention discloses a device and a method for recognizing hatching egg incubation based on hyperspectrum and belongs to the technical field of detection of agricultural products. The method comprises the following steps of: acquiring a hyperspectral image in the whole incubation process through a hyperspectral imager, analyzing the difference between different types of hatching egg images and the spectrum, extracting corresponding image and spectrum characteristic parameters, and optimizing a variable set which reflects the hatching egg incubation characteristics on the basis. According to the actual production conditions, a hierarchical support vector machine classifier based on a decision-making tree type is designed, and a hatching egg incubation determination model is established. According to the method, infertile eggs, eggs with abnormal early embryonic development, scattered yellow eggs, middle dead embryonic eggs and later-stage dead embryonic eggs are accurately recognized, an effect of monitoring the incubation process is achieved, manual detection can be completely replaced, and the method has significance and application values for improving the automation level of detecting the national poultry incubation quality.

The invention discloses a method for farming loaches on a large scale, and belongs to the farming field. The method has the advantages that selected excellent parent loaches are subjected to artificial spawning and breeding, so that the quality of laid loach eggs can be guaranteed, a survival rate can be increased, the egg laying period can be shortened owing to an artificial spawning mode, and the farming efficiency can be improved; the eggs are hatched by the aid of flowing water current, so that the eggs can be lifted by the flowing water current and can be prevented from settling at the bottoms of ponds, death of loach eggs at the bottoms of the ponds due to oxygen deficiency can be prevented, and the survival rate of the loach eggs can be increased; the quantity of the loaches capable of being hatched in the unit volume of the hatching ponds can be increased, the cost can be saved, and the hatching efficiency can be improved; the loaches can be assuredly and controllably farmed on the large scale by the aid of the method via ultimate reasonable feeding and cultivating management.

The invention relates to a gender determination method for a chicken hatching egg incubation early embryo based on a hyperspectral image, and belongs to the non-destructive testing technology in the poultry propagation industry. The gender determination method comprises the following steps: utilizing a hyperspectral imager to obtain a transmission hyperspectral image on the tenth day of chicken embryo hatching, analyzing difference of spectral response between a male embryo and a female embryo, extracting a spectral value within a wavelength range of 600-900 nm as an input value of a neural network, and judging the gender of the chicken embryo. With adoption of the method, the gender of the chicken embryo can be accurately determined, manual detection after hatching is replaced, the cost in the poultry production industry is lowered, and the production efficiency is improved.

The invention relates to a facility fry-rearing method for grouper in a large water body of an outdoor cement pool. The facility fry-rearing method comprises the following steps of: fry-rearing facility building and water treatment, preparation before fry-rearing, incubation for fertilized eggs, feeding for bait, regulation and control for fry-rearing water body and the like, wherein fries can be caught when the whole lengths of the fries achieve 2.5 cm. The facility fry-rearing method disclosed by the invention is simple in operation, adopts a stable fry-rearing water body condition, has the advantages of being high in fry-rearing success rate, stable in survival rate, simple in operation and the like in case of no use of any antibacterial agent during the whole fry-rearing process, and is suitable for facility fry-rearing for many species of grouper in a large water body of an outdoor cement pool; and an effective way is provided for the formation of large-scale production in the aspect of artificial fry-rearing for grouper.

The economic and practical artificial feed is suitable for scale feeding of beet noctuids to produce beet noctuids virus pesticide. It is produced by mixing the following materials: soybean powder 7-10 wt%, yeast powder 3-5 wt%, wheat bran 2-5 wt%, agar 1.5-3 wt%, proper amount of supplementary material and water. Feeding beet noctuids with the artificial feed can result in average chrysalis weight of 117.8 mg, eclosion rate of 99 %, high larva livability, normal growth of chrysalis and oviposition amount and egg incubation rate reaching those of natural feed. Being low in cost, practical andsimple in production, the feed of the present invention can meet the requirement of feeding beet noctuids in industrial scale.

The invention discloses a method for feeding lepidopteron. In the feeding process, a tray type net cage is used as a main feeding tool. The method comprises steps of collecting eggs, sterilizing, hatching larvae from the eggs, feeding the larvae, feeding pupas, feeding imagoes and the like, wherein gauze or plastic ropes are used as an oviposition substrate for collecting the eggs; the eggs are sterilized by using a formaldehyde solution with the volume concentration of 3-4%; the eggs are hatched and fed in an illumination incubator; the larvae are sterilized by using a sodium hypochlorite solution with the volume concentration of 8-12%; pupas feather in the tray type net cage; the feathering imagoes are continuously fed in the net cage and the eggs are collected and sterilized. The tray type net cage is simple and convenient to operate, the insects are effectively prevented from escaping and the cleaning can be carried out at any time; in the feeding process, eggs and larvae are disinfected by using different disinfectants, the disinfection effect is thorough and gentle, the bacteria are effectively prevented from mass propagation, and the hatchability of the eggs, the feathering rate of pupa are also improved, the hatchability of the eggs can be 95-96%, and the feathering rate of pupa can be 98%.

The invention discloses a migratory Atlantic salmon factory-like artificial breeding method. The migratory Atlantic salmon factory-like artificial breeding method includes the eyed egg incubation stage, the mouth opening and feeding stage, the fry breeding stage and the silvering process stage. Eyed eggs are incubated in an incubator in an incubation room with running fresh water; in the mouth opening and feeding stage, Atlantic salmon fries are bred in an indoor breeding pond with running fresh water; in the fry breeding stage, indoor closed circulating fresh water breeding is performed; in the silvering process stage, indoor closed circulating fresh water breeding is performed, the silvering process includes the silvering period and the lighting recovery period, the silvering period of five weeks begins first, during the silvering period, it is bright for 12 hours and dark for 12 hours every day, then the lighting recovery period of fives weeks begins, and 24-hour lighting is performed every day during the lighting recovery period. In the breeding process, the Atlantic salmon fries are all incubated and bred indoors, so that incubation and breeding are free of weather influences, the incubation and breeding conditions can be manually controlled conveniently, large-scale breeding can be carried out, the breeding is stable, the survival rate of the fries is high, the fries are uniform in size, and high-density breeding can be achieved.

The invention discloses a high-density frog breeding method. According to the high-density frog breeding method disclosed by the invention, scientific breeding is carried out in respects of construction of a culture pond, breeding frog selection of frogs, frog egg hatching, tadpole period management, froglet period management, adult frog period management, disease control, health and the like, the survival rate of the frogs from hatching to frog forming is large, high-density breeding can be carried out, and edible and medicinal frogs of which the sizes are huge, the meat is fat and the taste is delicious can be produced.

The invention discloses a tilapia fry rearing method. The tilapia fry rearing method comprises the following steps: breeding parent tilapia fries which are bigger than nine-sieve, picking parent tilapias which are disease free, injury free, strong and good in sexual maturity to rear, hybridizing the female parent tilapias and with the male parent tilapias according to ratio of stocking, picking up roes, incubating the roes with flowing incubating water in an incubating tank, cultivating the roes by marking in bold, and cultivating fries. Oviposition period is shortened by about seven days, incubating rate is as high as 67.9%, fry survival rate is 89.6%, each female tilapia lays 6700 fries each year averagely, fry production rate is improved by 30%, and the sizes of the fries are uniform. By means of the tilapia fry rearing method, fries can be reared all through a year, a large amount of tilapia fries are reared and the tilapia fries grow fast and are strong in stress resistance. The tilapia fries reared in mass are born at the same time, gonad developments are synchronous, sizes are the same, characters are unified, and heredity purity is high. Moreover, the tilapia fry rearing method has the advantages that incubating period is short, incubating efficiency is high, inheritable characters are good, fertility is strong, and fries can be reared in an overwintering mode.

The invention discloses a method for treating kitchen waste by using hermetia illucens. The method comprises the following steps: step 1, kitchen waste pretreatment: filtering, sorting, crushing and stacking the kitchen waste; step 2, larva inoculation: flatly laying the pretreated kitchen waste in a waste treatment box, and then inoculating larvae hatched by hermetia illucens eggs into the kitchen waste; and step 3, material and larva separation: collecting and separating mature larvae of the hermetia illucens after breeding treatment and material residues. According to the method for treating the kitchen waste by using the hermetia illucens, the consumption capacity of the kitchen waste is high, the treatment period of the kitchen waste is shortened, breeding of the hermetia illucens larvae is facilitated, and the hermetia illucens larvae can stably and rapidly grow.

The invention relates to a method for a silkworm diapause variety low temperature egg incubation transgene. Silkworm diapause variety next generation graine voltinism is changed in the special egg incubation condition, to ensure that present generation silkworm diapause variety moths obtained under the special egg incubation condition mate, to give birth to non-diapause next generation graine, finally referring to the microinjection transgene method of the non-diapause silkworm eggs embryo, the gene transferring is performed, therefore the obstruction of the silkworm diapause variety transgene technology is expertly broken, and a transgene silkworm is effectively manufactured. The method directly adopts the universal use utility silkworm diapause variety as original material in production, can avoid the long and troublesome breeding process, and directly utilizes the transgene technology to create the good new special silkworm variety with various characteristics, the breeding cycle can be greatly shortened, and massive manpower and physical resources are saved.

The invention discloses a method for breeding fly larvae and earthworms by kitchen garbage. The method is characterized in that the kitchen garbage is treated by the following steps: fermenting the kitchen garbage in a vacuum condition; regulating pH to 5-8; crushing, filtering and dewatering the kitchen garbage to obtain residual slag; adding 30%-50% of dried pig manure, dried cow manure, peanut straw powder, corn straw powder, other straw powder or mixture; putting the mixture to a fly larvae culture dish, paving the mixture in 5-10 thickness; adding fly eggs; maintaining the room temperature to be 30-35 DEG C and humidity to be 50-70% so that the fly eggs become fly larvae and then become maggots; after separating maggots, repeatedly performing the above steps by the residual slag till only fibrous material is remained in the residual slag; and adding the residual slag to the earthworm breeding base to breed earthworms. The method overcomes the problem that the utilization efficiency of the kitchen garbage after being treated by composting method is low, eliminates soil pollution, reduces air pollution and achieves recycling of the garbage.

The invention discloses a breeding method and special feed for adult chrysopa septempunctata. The feed for the adult chrysopa septempunctata comprises the following materials: defatted tenebrio molitor, shell-removed eggs, saccharum and camellia powder with the dry-weight mass ratio of (5-7.5):2:1:1. When the feed for the adult chrysopa septempunctata is used to breed the adult chrysopa septempunctata, the survival rate of the adult chrysopa septempunctata is normal, the total egg laying amount is about 60% of that of a control group (taking soybean aphids as the feed), but the lives of the adult chrysopa septempunctata are prolonged; the egg incubation rate is increased; therefore, the feed for the adult chrysopa septempunctata can basically meet the growth, development and reproduction requirements of the adult chrysopa septempunctata; a preoviposition period of female adult chrysopa septempunctata bred by the feed is prolonged by 13-20 days; the total egg laying amount is 57.0-61.0% of that of the control group; the incubation rate of eggs is increased by 2.3-5.4%; the lives are prolonged significantly; and the lives of the male adult chrysopa septempunctata and the female adult chrysopa septempunctata are prolonged by 28-38 days and 15-26 days respectively.

The invention discloses a graded culture method for large yellow croaker fry, which comprises the following steps of: performing fertilized egg incubation and membrane broken juvenile fish culture in an indoor nursery pond; when 20 percent of juvenile fish is cultured to reach the body length of 20 millimeters, training the juvenile fish by using a proper amount of eel powder and feed in the morning; when 50 percent of juvenile fish is cultured to reach the body length of 20 millimeters, performing reinforced training for 3 days by using full eel powder; transferring the fry with body length of not less than 20 millimeters to an outdoor secondary net cage for culture, wherein the culture density of the secondary net cage is 90 to 110 thousand pieces; transferring the fry with body length of not less than 30 millimeters to an outdoor tertiary net cage for culture, wherein the culture density of the tertiary net cage is 50 to 70 thousand pieces; transferring the fry with body length of not less than 40 millimeters to an outdoor quaternary net cage for culture, wherein the culture density of the quaternary net cage is 30 to 40 thousand pieces; and when 95 percent of fry is cultured to the body length of not less than 50 millimeters, obtaining the large yellow croaker fry capable of being put to breed. The graded culture method for the large yellow croaker fry has regular fry specification, high fry growth speed, high survival rate and good adaptability of the fry to the culture environment.

The invention provides a rapid and high-efficient artificial breeding method of golden cicada, and relates to a special animal breeding technology. The rapid and high-efficient artificial breeding method of golden cicada includes steps of collecting seed sources; pretreatment of egg branches; egg breeding: building up a green house, and placing egg branches in the house; artificial incubation: simulating the seed egg incubation process of the nature world, and providing a high-temperature and high-humidity incubation environment; preparation of breeding seeds; seed feeding: feeding egg branches at night; binding and hanging three or five of egg branches on a tree trunk, and making the incubated small nymphs climb down along branches (trunk) and drill in the soil; heat insulation. The rapid and high-efficient artificial breeding method can simulate the seed egg incubation of the nature world, provide high-temperature and high-humidity incubation environment and prompt the seed eggs to incubate and produce as soon as possible; for the wild golden cicada egg has dormancy in overwintering due to the low temperature, the incubation process can be completed for 1-2 years; however, golden cicada can be incubated for about 35 days according to the suitable condition provided by the invention, thus the breeding cycle is shortened by 1-2 years, and the incubation and production rate of seed eggs can reach over 95%, and is about 3 times higher than that of the nature world.

The present invention discloses artificial feed for citrus fruit fry. The artificial feed is mixture of corn powder 40-48 weight portions, yeast powder 5-10 weight portions, adult oviposition attractant 0.5-1 weight portions, hydrochloric acid 0.01-0.5 weight portions, stuffing 2-5 weight portions, preservative 0.01-0.5 and water 80-90 weight portions. Its adult oviposition attractant can attract female citrus fruit fry to lay eggs for easy collection of citrus fruit fry eggs. The present invention makes it possible to feed great amount of citrus fruit fry of different generations in low cost and without limitation of seasons.

The invention relates to an artificial eel propagation method, which includes: a, ripening parent fishes, breeding catadromous parent reels for seven days, gradually increasing salinity of water, and subjecting the parent eels to back intramuscular injection of ripening agent-carp pituitary gland homogenate and HCG (human chorionic gonadotropin); b, performing induced spawning of the parent eels, subjecting female eels to injection of oxytocin 17 alpha-hydroxyl progesterone and HCG, subjecting sperm-producing male eels to injection of mixture of CPE (carp pituitary extract) with HCG, collecting naturally spawned fertilized eggs on the next day, and subjecting the female eels laying no eggs to semi-dry artificial insemination; and c, hatching the fertilized eggs, immediately transferring the fertilized eggs to a special-made hatching barrel for hatching, and slightly aerating, changing half of water every four hours until fry are hatched successfully. The artificial eel propagation method has the advantages that anesthetic loss and operational injury can be prevented, injection dosage of hormones is reduced, a great amount of eels can mate and lay eggs naturally under artificial induced spawning, artificial insemination can be complete securely in a planned way, level of high-quality fertilized eggs and alevin of eels artificially propagated is increased.

The invention relates to a freshwater fish demersal egg incubation device and method. The freshwater fish demersal egg incubation device and method are suitable for incubation of fish demersal eggs or adhesive eggs processed in a debonding mode. The device comprises a container, wherein the bottom of the container is in a U shape, one side portion of a container inner cavity is provided with a water injection pipe facing the position below the corresponding side portion of the container, an opening above the other side portion of the container inner cavity is correspondingly provided with an arc turn portion, and the arc turn portion is turned towards one side of the water injection pipe from bottom to top so that injected water flow form annular flow. The method comprises the steps that debonded germ cells are slowly placed in the container filled with water and sink slowly; a water injection pipe valve is opened and is adjusted in a fine mode according to the proportion of the germ cells, the water flow is controlled so that the water flow can rotate in the perpendicular plane in the container to drive the germ cells to rotate, and dead cells and light impurities are removed under the action of centrifugal force; the water flow is kept being injected, and a net bag is cleared when fries are about to be incubated; the fries are collected after being incubated. According to the freshwater fish demersal egg incubation device and method, the germ cells can be prevented from being accumulated on local parts, the dead cells and egg shells are separated from other impurities, and an incubation effect is good.

The invention discloses a method for artificial feeding of Zeuzera leuconolum Butler, which includes: selecting breeding containers for an initial insect source and larvae, breeding the larvae, management of pupas, management of imagoes, management of egg hatching and the like. By the method, a great amount of insects of Zeuzera leuconolum Butler which are uniform in development and physiology can be obtained continuously, and the problem of feed deficiency in seasonal host breeding can also be solved. The method is used for artificial feeding of Zeuzera leuconolum Butler for the first time. Tests show that, by the method, artificial feeding of Zeuzera leuconolum Butler can be achieved successfully and the development process of Zeuzera leuconolum Butler can be halved almost.

The invention relates to the field of disease and pest control, and provides a green and safe disease and pest control method. Staging control is carried out according to different growth periods of plants. The specific control sequences and steps are as follows: (1), disease and pest control in the early stage comprises: control on damping-off, sheath blight and stubby root nematode before soil is not cultivated, and control on pests having relatively high mobility or needing adults to lay eggs and hatch, such as locusts, armyworms and moths, before plants are planted; (2), disease and pest control in seedling raising and seedling stages comprises: selection and use of disease-resistant varieties and health seedlings, disinfection of seeds and substrates, and control on whiteflies, flea beetles and cutworms in the seedling stage; and (3), disease and pest control in field planting and after field planting comprises: environmental management, water and fertilizer management, and adoption of different botanical fungicides and methods for different diseases and pests. Besides, the invention specifically discloses specific disease and pest control methods of Chinese cabbages, tomatoes, strawberries and hami melons. The green and safe disease and pest control method in the invention has the benefits that: a disease and pest control system is formed; and the method is wide in application range, good in effect and free from pesticide residue.

The invention provides an incubation method of earth yuan eggs, comprising the following steps: 1) setting up an egg incubation house, 2) preparing incubation soil, 3) cultivating the egg mass to grow, 4) turning over the egg mass, 5) leading seedlings to emerge, 6) sieving and taking larvae, and 7) removing the vacant shell. By adopting the invention, the temperature in the incubation house and the incubation basin is balanced, thus seedlings can emerge in four seasons of a year, the incubated larvae has strong constitution, and the survival rate can reach over 90%, thus laying a solid foundation for feeding in the future. The incubation method in the invention can keep away from the peak season of incubation and seedling emergence; the products can be sold at a high price; the management is easy and convenient and labor force can be saved.

The invention discloses an inflation oxygenation and water saving type temperature-controllable aquatic animal incubation device which comprises a conical incubation barrel located in a supporting barrel. The conical incubation barrel contains water for incubation and fertilized eggs. A plug at the conical head end of the conical incubation barrel isolates water for incubation from liquid in the supporting barrel, an air supply guide pipe penetrates through the plug, the conical head end of the air supply pipe is connected with an air chamber in the incubation barrel, the far-conical-head end extends out of the supporting barrel and is provided with an air pump, an air amount adjusting valve is arranged between the air pump of the air supply pipe and the incubation barrel, a heating bar can be arranged in the supporting barrel, and the heating bar is connected with a power source. On the basis of the principle that inflation oxygenation are carried out on the bottom of an incubation facility, oxygen needed during aquatic animal fertilized egg incubation is ensured, the problems that a filter net is likely to be blocked, water overflows and small aquatic animals flee in the film outgoing period are solved, then a temperature control device is adopted to ensure that the incubation environment temperature is constant, and the problem that aquatic animal incubation is likely to be affected by weather variations is solved.

The invention discloses a hatching egg incubation illumination regulating and controlling method and an illumination regulating and controlling device, with side-direction light supply. Egg supports loaded with hatching eggs are placed on each layer of turnable egg stands, LED lamps are mounted above one side or multiple sides of each layer of the turnable egg stands and parallel to the turnable egg stands, and the LED lamps can turn along with the turnable egg stands; or the LED lamps are horizontally, or vertically or obliquely mounted on one side or multiple sides outside three-dimensional egg stands, and the LED lamps do not turn along with the turnable egg stands. After light enters, the hatching eggs perform diffuse reflection on the light, so that the light tends towards uniformity; when the hatching eggs are incubated, the LED lamps are regularly switched on, the light transmits egg shells of the hatching eggs, embryos mutually influence through squirm, and concurrent work and rest rhythm and hormone level are formed, so that the health state of the embryos is increased, the growth of the embryos is promoted, the incubation time is shortened, and the incubation rate of the hatching eggs, and the development and the stress resistant capacity of internal organs of chicks are improved. The hatching egg incubation illumination regulating and controlling method and the illumination regulating and controlling device disclosed by the invention are used for regulating and controlling illumination in the process of incubating the hatching eggs, the design is simple, the structure is reasonable, and the use rate of light energy is greatly increased.

In the process of breeding snakes, individual households frequently meet the problems that the snake is difficulty to delivery and lays few eggs. The invention discloses a method for improving the survival rate of the snakes and hatching success rate of the snake eggs by timely oxytocin for the female snake with eggs and scientific management. The method is good for the growth and maintenance of the snakes in pregnancy, improves the success rate of the propagation of the female snakes and the snake egg incubation, improves the artificial breeding technology of the snakes, and realizes the industrial aquaculture of the snakes.

The invention discloses a method for breeding a sipunculus nudus parent. Artificial breeding of sipunculus nudus is high in cost, very instable in effect and significantly relevant to poor artificial spawning effect, high mortality and inconsistent egg laying quality of the sipunculus nudus parent. Meanwhile, mismatch of the yield is caused due to excessive concentration of egg laying in induced spawning, leading to resource waste. By adopting the measures of building of a sipunculus nudus parent breeding pond, indoor artificial food culture, maturing and breeding management, disease control and prevention and artificial control of egg laying, the mortality is lowered to 7-12 percent within 40 days of artificial indoor parent maturing and egg laying breeding, the single yield of an individual parent of 20g is 50,000-70,000 eggs, the metamosphsis rate of hatched larvae is 13-86 percent, and artificial control of egg laying can be performed according to the production capacity. By adopting the method, the source and controllability of fertilized eggs are realized in plant artificial breeding and selective breeding of the sipunculus nudus, the egg laying time of the parent is prolonged, and the breeding cost is saved.

The invention provides a triops sinensis imitating ecological breeding method. The method comprises the following steps of egg incubation and larva breeding, adult breeding, egg laying and collection, and daily management. The method comprises the steps that aquatic plant and plant debris with beneficial microorganism are utilized for building a micro ecological system for triops sinensis, the micro ecological system can provide food for the triops sinensis and can purify water quality of itself, special buoyancy bait is fed, the water temperature is kept constant, and oxygenation is kept for 24 hours, a breeding box is utilized for collecting eggs, and annual indoor breeding of triops sinensis can be achieved. Adult triops sinensis bred through the method is robust and high in disease resistance, the female adult triops sinensis can lay 400-500 eggs on average, the hatchability is 89%, the larval survival rate is 92%, the breeding method is simple, the breeding cost is low, the method can be used for manually increasing the population number of the triops sinensis, and the triops sinensis imitating ecological breeding method is of great significance in protecting, researching, developing and utilizing rare animals, and has higher economic benefits and ecological benefits.