172results about How to "Individual big" patented technology

The invention relates to a method for cultivating a new variety of hybridized and backcrossed Argopecten purpuratus. The method is characterized by comprising the following steps of: selecting excellent individuals in a hybridized first filial generation family or group of Argopecten irradians and the Argopecten purpuratus; backcrossing the excellent individuals with the Argopecten purpuratus to establish a backcrossed family or group; selecting hermaphroditic excellent individuals with good representation in the backcrossed family or group; and continuously cultivating at least third generations of self-bred families to obtain the new variety of the hybridized and backcrossed Argopecten purpuratus having the advantages of steady heredity, rapid growth, large individuals and wide temperature tolerance range. According to the method provided by the invention, the new variety can be cultivated in sea areas in the north, such as Qingdao, Dalian and the like; and, compared with the Argopecten irradians, the yield at the same year is increased by more than 30%.

The invention provides an earthworm cultivating method which is characterized by comprising preparation of earthworm beds, inoculation of earthworms, management and harvest of adult earthworms. Drainage ditches are arranged among the earthworm beds. Pedestrian paths are arranged on two sides of each earthworm bed. The cross section of each earthworm bed is designed to be a trapezoid. Water conveying pipelines are laid so that a humid growing environment for the earthworms is ensured, the environment of the upper portion of each earthworm bed is more humid and softer than that of the lower portion of each earthworm bed, automatic separation of the adult earthworms and young earthworms is achieved, sundry separating work in a later stage is avoided, and working efficiency is improved. The adult earthworms and the young earthworms grow separately, cultivating space is utilized sufficiently, and population competition is avoided to some extent. The adult earthworms are large in size, bright in color, high in spawning rate and high in high quality protein level, and therefore improvement of yield and quality of the earthworms is facilitated.

The invention relates to a method for preparing microbial feed additive used for promoting growth of goose liver. All of the microbial strain is screened out from the animal intestinal tract. The method comprises culturing all the strains on the same culture medium through combined culture, constituting powerful compound microbial community by using mixed sync solid fermentation process, and forming effective enzyme producing ability to make the product has amount of physiologic metabolite such as organized enzyme for analysing cellulose and fructose, peptide, antioxidants, free amino acid, and vitamin. The invention can promote feed digestion and absorption of animal, promote synthesize and utilization of protein, enhance immunologic competence of livestock, fowl and aquatic livestock, and improve feed conversion ratio and production capacity of breed animal. The inventive product has good practicability and pertinency.

The invention discloses a freshwater crayfish culturing method, comprising the following steps of: a, selecting a culturing ping; b, preparing before culturing; c, putting into crayfish fingerlings; d, scientifically feeding; e, controlling water quality. According to the above manner, cultured crayfish have the advantages of being large and high in meat quality, and also have high yield and good culturing economic benefit.

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 provides a method for industrially producing zophobas morio, which includes the following basic steps that: (1) a population is bred by way of purification, crossbreeding and rejuvenation; (2) larvae are bred with a special-made artificial feed under constant temperature and humidity, frass is cleaned up by a sieving machine every 5 to 8 days, most of the larvae are used as commercial larvae, part of the larvae are left for breeding in the next production period, and the rest continue to be cultured into pupae; (3) disinfection is periodically carried out at the pupal stage; (4) adults are fed with concentrate and green material alternately in the morning and the evening; and (5) eggs are collected in egg-laying trays by egg-laying sieves, the egg-laying sieves are taken up after 5 to 7 days, and a thin layer of fine wheat bran is sprinkled on each egg-laying tray to carry out incubation. The method for producing zophobas morio solves the key technical bottlenecks, including low production efficiency, low benefit and heavy labor, and the industrial and mass production of zophobas morio is put into practice.

The present invention relates to culture of marine green algae, and is especially the process of fast cultivating marine green algae. The process includes sterilizing and cooling natural sea water and adding trace nutritious elements to form the culture medium; inoculating marine green algae in the density of (5.0-6.0)x10 cells/ml; and lighting culturing in the liquid surface illumination intensity of 3500-4000 Lx and lighting/no-lighting time ratio of 12-14 to 12-10 for 6-8 days to reach algae density of (2.0-2.5)x10 cells/ml. The process has slow change of pH in the algae liquid, high chlorophyll content each algae cell unit and large algae cell. The present invention uses trace elements in culturing marine green algae, and has fast algae cell growing rate and high chlorophyll content each algae cell unit.

Technology for bulk preserving spermatozoa of Chinese sturgeon through freezing at ultralow temperature comprises collecting and detecting fresh spermatozoa, diluting, balancing, adding antifreeze, subpackaging, program cooling, and preserving in liquid nitrogen container of -196deg.C. Each bulk can freeze 100 mL fresh spermatozoa. when the first bulk spermatozoa is in the procedure cooling step, after 5 minute, starting diluting the second bulk spermatozoa, and repeating above steps until all spermatozoa is preserved 8-12 h before its effective time. The diluent is Tris-HCl 20-30 millimole, sucrose 30-60 mol, potassium chloride 2-10 millimole, and distilled water 1000mL, and regulating pH to 8-8.5 with HCl. The antifreeze is methanol. The invention can efficiently carry out bulk preservation of Chinese sturgeon spermatozoa through freezing at ultralow temperature and long term ultralow temperature freezing preservation, and provide enough spermatozoa resource for artificial propagation of Chinese sturgeon.

The invention discloses an ecological circulation culture method and device for algae, prawns and sinonovacula constricta in winter. The device comprises an alga pond, a high-position prawn culture pond, settling ponds, a sinonovacula constricta culture pond and purifying ponds, wherein a thermal-insulation plastic shed covers each pond; the high-position prawn culture pond is provided with a boiler. The method includes: inoculating micro-alga seed sources artificially cultured in the alga pond into the high-position prawn culture pond, the optical prawn culture temperature is guaranteed through boiler heat supply, micro-algae in prawn culture water passing the settling ponds is pumped into the sinonovacula constricta culture pond to serve as baits, and micro-alga seawater filtered by sinonovacula constricta is purified by the purifying ponds and pumped into the high-position prawn culture pond for recycling. The ecological circulation culture method and device has the advantages that the sinonovacula constricta can obtain sufficient micro-alga baits and appropriate growth water temperature in the whole culture period, and the high-position prawn culture pond is allowed to keep a relatively-stable water ecological environment system at the same time.

The invention discloses a method for quickly establishing cross-bred XY holandric pelteobagrus fulvidraco. The method is characterized in that based on mating offspring of pelteobagrus fulvidraco YY physiological female fish and pelteobagrus vachelli XY male fish, cross-bred YY super-male fish is obtained by cultivation through a genetic method so as to mate with common pelteobagrus fulvidraco female fish to produce the XY holandric pelteobagrus fulvidraco. According to the method disclosed by the invention, the breeding period can be obviously shortened; compared with technologies such as Varadaraj and the like, two generations can be shortened; and compared with a method of continuously producing the holandric pelteobagrus fulvidraco by using sex reversal and gynogenesis, one generation can be shortened. Besides, the cross-bred holandric pelteobagrus fulvidraco obtained by the method disclosed by the invention is stable in genetic character, high in growth speed, large, and strong in adaptive capacity to the environment, has cross-breeding advantages and inherits advantages of the holandric fish, so that better breeding and economic benefits can be obtained.

The invention discloses a pear tree fertilizer slow-release additive containing brassinolide. The pear tree fertilizer slow-release additive containing brassinolide comprises, by weight, 20-25 parts of rice straw, 4-6 parts of coal gangue powder, 0.2-0.4 part of brassinolide, 1-2 parts of guanylthiourea, 1-4 parts of glucose, 1-2 parts of polyethylene glycol, 1-2 parts of brown sugar, 1-2 parts of ardealite, 6-8 parts of weathered coal, 1-3 parts of polyacrylamide, 0.2-0.3 part of potassium nitrophenolate, 0.6-0.8 part of polypropylene glycol, 1-3 parts of agricultural rare earth nitrate, 1-2 parts of sodium dodecyl benzene sulfonate, 4-5 parts of alfalfa, 1-2 parts of flos chrysanthemi indici, 1-2 parts of plumeria rubra, 1-3 parts of stellera chamaejasme, 3-5 parts of corn gluten meal, 3-5 parts of cow dung and 0.1-0.3 part of HM decomposition maturing agent.

The invention discloses a method for cultivating American cockroaches. The method comprises the following steps of a, taking one-age nymphs of the American cockroaches to conduct dark cultivation, wherein the cultivation temperature is 29-31 DEG C and the relative humidity is 80-85%, and obtaining 6-8-age nymphs; b, continuously conducting dark cultivation for 80-100 days, wherein the cultivation temperature is 28-30 DEG C, and the relative humidity is 65-75%. The method for cultivating the American cockroaches is high in the survival rate, the prepared American cockroaches are high in medicinal component content, and the method is short in cultivation period and low in cost.

A breeding method for a new strain of Jianyang big-eared sheep relates to the technical field of animal breeding, in particular to a breeding method for a new strain of Jianyang big-eared sheep. The purpose of the invention is to provide a goat breed with fast growth and development, strong adaptability, high meat production rate and slaughter rate, and a reproduction rate of more than 210%. After long-term selection and breeding, the present invention has the conditions of an excellent population in terms of quality, quantity and genetic performance, and has formed a population with high reproduction rate, large individual, fast growth and development, good meat production performance, rough feeding resistance, and strong disease resistance. , good leather, tender meat, no smell and other characteristics of the variety, and basically formed an excellent variety with relatively stable genetic performance and a certain population size, which is easy to promote.

The invention provides a method of identifying day age of cephalopods through beaks and includes a method of grinding a beak longitudinal section and counting growth striation. The method mainly includes the steps of: extraction, cleaning, soaking, cutting, arrangement, resin embedding, cutting, immobilization on a glass slide, grinding and polishing, picture forming, and growth striation counting. In the method, the beak longitudinal section is ground respectively from the left and right sides to a core surface towards a central line. A prepared section is photographed by CCD to ensure that the growth striation can be read at any time in future. The growth striation is counted from the rear end to the front end of the beak in a direction being vertical to the growth striation all the time, thereby ensuring counting accuracy. The method solves the problems that the beak is difficult to grind and is liable to break during grinding, and the growth striation is difficult to observe and count.

Disclosed is a diced breeding technique for Chinese narcissus which comprises, using one or two year-old narcissus bulb as raw material, cryogenic processing 4-8 weeks, cutting the bulb longitudinally into uniform small blocks in a radiation shape by using plateau as the center at normal temperature, with each block keeping the plateau and all the flakes, loading each cut small blocks of breeding material into poly bag containing washed and filtered dried sand, sealing the pocket opening, placing in dark places, shifting for culture in the open. The ball forming rate for cutting breeding and transplanting survival rate can be as high as 100%.

The invention provides a daphnia magna domestication method and application thereof. The method comprises the following steps: feeding daphnia magna into a domestication pool, cultivating the daphnia magna for a certain time period with specific domestication food, repeatedly domesticating and screening dominant species, and performing stabilization and rejuvenation to finally domesticate the daphnia magna into natural enemies of cyanophyta. The invention further discloses the domestication food for domesticating the daphnia magna and the application of the daphnia magna domestication method to the field of ecological water body remediation. The daphnia magna domesticated by the method has the characteristics of large individuals, high cyanophycean toxin conversion capability and high outdoor stability; when the domesticated daphnia magna is used for ecological remediation, underwater lighting conditions can be improved, the clarity of a water body can be rapidly improved, and quick response, environment friendliness, low carbon and high efficiency are achieved.