1191results about How to "Improve hatchability" patented technology

The invention provides a technique for preparing hermaphrodite scallop interspecific hybrid fingerlings, which relates to a marine shellfish breeding technique. Purple scallops and bay scallops are fattened and induced to be mature respectively so as to reach sexual maturity at the same time, and then are synchronously induced to lay eggs and discharge sperms respectively, so that sperms and eggs of two types of scallops are obtained respectively to perform interspecific cross insemination. The purple scallops and the bay scallops are hermaphrodite, both belong to an Argopecten category, have the same number of chromosomes, and have complementary superiority and traits. Hybrid groups are high in both fertilization rate and hatching rate and normal in larvae development. Two types of scallop parents adopted have complementary superiority and traits, thereby having significant heterosis in size, growth, adaptability and other aspects. As two types of scallops are both hermaphrodite, parent scallops are easy to purifym and the offspring with greater heterosis can be obtained by hybridizing the purified parent scallops.

The invention discloses an imitated wild breeding method for cicadas. The method mainly comprises the following steps of: collecting branches with cicada eggs, hatching indoors, hatching under a tree, planting and harvesting. After the cicada branches are planted for two years, the cicadas climb out of the ground and are artificially collected. The method has the greatest innovation that cicada hatching and planting are effectively integrated; the imitated wild planting mode changes the conventional method for breeding the cicadas by directly planting the branches, and is closer to the appropriate environment required by hatching the cicadas; and radial planting is adopted in the planting method, so that the conventional method for planting around the tree for one circle is changed, and the root system of the tree is fully utilized. The method has the characteristics of high hatching rate and short breeding time.

The invention discloses a loach fish fry artificial propagation method. The loach fish fry artificial propagation method comprises the following steps: parent fish rearing and selecting; artificial induction; fertilization process; and fertilized egg hatching process. The loach fish fry artificial propagation method can excellently improve induction rate, fertilization rate and hatching rate, and especially improves post-natal survival rate of the parent fish. The loach fish fry artificial propagation method can achieve loach fish fry industrialized production, provides offspring seeds for large-scale farming, and acquires excellent economic efficiency, by using the loach fish fry artificial propagation method the post-natal survival rate of the parent fish is 90.87 percents, increasing by 40.87 percents; the induction rate is 91 percents, increasing by 11 percents; the fertilization rate is 96.67 percents, increasing by 1.67 percents; and the hatching rate is 91.07 percents, increasing by 11.07 percents.

The invention discloses a tortoise breeding method, which includes the following procedures: 1 choosing of an adult tortoise pool; 2 construction of a spawning ground, feed tables and terrances; 3 the adult tortoise pool cleaning and sterilization; 4 reserved adult tortoises screening; 5 choosing of an adult tortoise; 6 sterilization of the adult tortoise; 7 free breeding of the adult tortoise; 8 spawning of the adult tortoise; and 9 incubation of tortoise eggs. The spawning ground is built on the east side of the adult tortoise pool, a simple rain shelter is constructed above the adult tortoise pool, the feed tables are built on two sides of the middle portion of the adult tortoise pool and 10cm to 15cm above the water surface, and two terrances made of moso bamboos are constructed in the adult tortoise pool. In spawning of the adult tortoise, firstly the spawning ground needs to be cleaned and sterilized, and the tortoise eggs need to be gathered after the spawning of the adult tortoise. The tortoise breeding method remarkably improves egg laying amount, fertilization rate, hatchability rate and proportion of female tortoise seeds of adult reeve's turtles.

The invention discloses the in-vitro culture technology for fertilized ova of beautiful white shrimps, which is characterized by comprising the following steps of: preparing incubating water, selecting brooding shrimps, separating parental shrimps from the ova, disinfecting, incubating, managing daily and the like. Parents of the beautiful white shrimps are easy to die in the processes of catching and transportation, so the ova of the brooding shrimps which just died can be subjected to in-vitro incubation to save the cost of purchase of the parents, and the shrimp ova are more convenient to transport; part of parent shrimps also can be prevented from nibbling shrimp seedlings after being bred, so that the survival rate of the shrimp seedlings is improved; and the beautiful white shrimps of which the ova are cut also can be used for preparing dried shrimps to avoid the waste of resources.

The present invention discloses a feed micro-ecological preparation, an anti-nutritional substance-free feed and a preparation method thereof, and belongs to the technical field of feed. The feed micro-ecological preparation is prepared by fermenting the following raw materials in parts by weight: 1.0-1.2 parts of Saccharomyces cerevisiae, 0.2-0.6 part of Enterococcus faecalis, 1.5-2.0 parts of Bacillus subtilis, 0.2-0.6 part of Bacillus coagulans, 0.1-0.15 part of Bacillus licheniformis, 0.1-0.3 part of Bacillus lentus, 0.2-0.5 part of Clostridium butyricum and 993.05-995.15 parts of liquid medium. After the feed micro-ecological preparation is mixed with feed raw materials, enzymes produced in the process of microbial strain fermentation can decompose anti-nutritional substances in feed and increase the feed utilization rate; at the same time, microbial strains also have effects in improving animal intestinal environment, maintaining intestinal flora balance, inhibiting the growth of pathogenic bacteria, and improving animal immunity.

A broiler special feed, relating to animal feed technology, comprises a main ingredient, a fodder, animal ingredients and Chinese herbal additives, wherein the main ingredient is 80% (by mass), the fodder is 5% (by mass), the animal ingredients are 10% (by mass), and the Chinese herbal additives are 5% (by mass). Compared with the conventional feed, the feed in the present invention contains components of Chinese herb. The Chinese herbal additives and the feed carrier acting in a combined manner ensures the normal nutritional requirements of laying ducks, prevents and cures diseases, improves the immunity of laying ducks, and promotes the growth of laying ducks. The broiler special feed has characteristics of non-toxic side effects, no drug-resistance generation, no environmental pollution, promotion of body resistance, rapid acting and low prices.

The invention relates to a feeding bait and process for colonially feeding Orius sauteries, the bait is made through a mode that flour mites are inoculated on a vegetal mixed base and is cultured and propagated, the environmental conditions of the inoculation, the cultivation and the propagation are that the relative humidity is 65-75 percent, the temperature is 24-26 DEG C, and the bait is cultured under the above environmental conditions for 15-25 days. The feeding method comprises hatch, the raising of nymphs, and the transfer of last instar nymphs or imagoes, the environmental conditions of feeding are that the temperature is 17.5-27.5 DEG C, the relative humidity is 60-90 percent, the photoperiodicity of the nymphs is 14-16 Liter : 10-8 days, during the stage of feeding the nymphs, the Orius sauteries are fed for 9-20 days by using the bait, and the quantity supplied of the bait of each Orius sauteri is 0.2-0.5 gram. Using the invention to cultivate the sauteries, the period of the growing development is short, the livability is high, the operation is simple, the practicability is strong, and the production cost is low. The spread and exploitation of the invention is beneficial to the non-polluted prevention of pests and the food safety.

The invention relates to an insect breeding bottom and a breeding method of gynaikothrips ficorum and belongs to the field of insect breeding and insect ecology. A bottom body is in a cone frustum shape with large top and small bottom and is in sealing match with a bottle cover, a magnifying glass is installed at the center of the bottle cover, a plurality of venting holes are evenly distributed on the bottle cover, and a filter screen is installed on the venting holes. The method utilizing the insect breeding bottom to breed the gynaikothrips ficorum comprises (1) collection of eggs, (2) hatching of the eggs, (3) breeding of nymphs and (4) breeding of imagoes. By using the breeding method, the hatching rate, survival rate and eclosion rate of the gynaikothrips ficorum are high, massive thrips of various insect states which are orderly in age and high in vigor can be obtained, and form changes and the whole life history of the gynaikothrips ficorum can be observed in real time.

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%.

A distant hydridization method between the subfamilies of cyprinid includes chealth eugamic male and female parents catalyzing female, artificial fertilization, incubation and naturalizing to obtain to descendant with strong bionergy. Its advantages are high disease resistance, high survival rate and high growth speed.

The invention introduces a method for improving the reproduction rate of giant salamanders, which includes the following steps: (1) building up an artificial natural ecological function culture system, namely, at least one artificial natural ecological function culture pond group, wherein each pond group comprises 2-3 rearing ponds; (2) feeding qualitatively and quantitatively at fixed time, wherein live loaches or crucians are taken as the main feed, fresh shrimps and beef liver or pork liver are added as auxiliaries, furthermore as for male salamanders, testes of cocks or ducks are added, and as for parent salamanders, vitamin C or vitamin E are added before and after the parturition; and (3) regulating and controlling the water temperature, wherein at the temperate range of 17-19 DEG C, the female salamanders and the male salamanders can be enabled to grow up at the same time by rising or lowering the water temperature by 1-2 DEG C. The method can greatly improve the artificial reproduction rate of giant salamanders, with the induced spawning rate of the female salamanders reaching 75% and the male salamanders exceeding 80%. Meanwhile, the method can also improve the fertility rate and the hatching rate by 8-12%.

The invention provides a manual schizothorax griseus pellegrin breeding method and belongs to the technical field of wild fish domestication and breeding, freshwater aquaculture and fish genetics-breeding. The manual schizothorax griseus pellegrin breeding method includes the following steps that 1, parent fish are caught and domesticated; 2, cultivation and spawning induction are conducted on the parent fish; 3, artificial insemination and egg hatching are conducted; 4, fry rearing is conducted. The manual schizothorax griseus pellegrin breeding method has the advantages that no report on the manual schizothorax griseus pellegrin breeding method exists in documents disclosed both home and abroad; the breeding method is scientific and reasonable, the rate of fertilization and the hatching rate of fries are higher and reach 98.6% and 91.2% respectively; the problem that no fry and fingerling exist for wild schizothorax griseus pellegrin resources is solved through manual recovery and supplement; the problem that no fry is supplied in the manual schizothorax griseus pellegrin breeding process is solved.

The invention provides a method for artificial fertilization and hatching of hexagrammos otakii, which is used for solving the problems that spawns of the hexagrammos otakii in marine fishes have low fertilization rate and hatchability because the spawns have viscosity and become agglomerates when meeting sea water. The method adopts an artificial method to shape the spawns of the hexagrammos otakii into a planar type and then perform fertilization to prevent the viscid spawns from becoming the agglomerates so as to ensure that the spawns can fully and effectively contact sperms during the fertilization, the spawn fertilization rate is improved and can reach 93 percent under an artificial condition; besides, the method adopts hanging type hatching for spawn segments after artificial planar shaping to ensure that oosperms can obtain sufficient dissolved oxygen during the hatching and greatly improve the hatchability of the oosperms. Experiments show that the hatchability of the oosperms reaches 85 percent and is far more than 56 percent which is achieved under the conditions of the prior art.

The invention discloses a high strength selecting and cultivating method of excellent stichopus japonicus seeds. The high strength selecting and cultivating method comprises the steps of carrying out cultivation, spawning or spermiation promotion, and hybridization on parent stichopus japonicuses from at least four different geographical groups, and carrying out selective breeding at different degrees in different periods according to a quantitative genetics method. By combining two traditional and effective methods of hybridization breeding and selective breeding, the invention preserves excellent properties of the stichopus japonicus and also avoids inbreeding; because the cultivated stichopus japonicuses have excellent properties of different groups, the cultivated stichopus japonicuses have the advantages of fast growth speed, strong stress resistance and the like; and the invention not only realizes seedling pre-culturing of the stichopus japonicus to meet market demand in advance, but also prolongs an effective growth period of the stichopus japonicus within a year, shortens cultivation time, and improves economic benefit; therefore, the inveniton is suitable for large-scaled factory production.

The invention provides a method for artificially propagating odontobutis obscurus, which is characterized by comprising the following steps of: firstly, selecting a plurality of pairs of sexually matured male and female odontobutis obscurus and placing into a spawning pond; secondly, placing a plurality of odontobutis obscura ovipositors in the spawning pond, wherein the number of the odontobutisobscura ovipositors is more than of the pairing number of the sexually matured male and female odontobutis obscurus, a wood horizontal trapezoidal cylinder is adopted as a male and female odontobutisobscurus mating place in each ovipositor, and a mesh used for spawning by the odontobutis obscurus is placed on inner side surfaces of two bevel edges of the trapezoidal cylinder; thirdly, controlling the illumination intensity of the environment of the spawning pond to be not more than 50lux, the environmental noise to be not more than 50 decibels and water temperature to be 18-29 DEG C until the female odontobutis obscurus leave the ovipositors, and ending spawning; and fourthly, taking out the mesh spawned with spawns from the ovipositors, laying the mesh on two sides of a rectangular bracket horizontally, placing into a hatching pond, ensuring that the distance between the mesh spawned with the spawns and a water surface is not less than 5cm, introducing oxygen to the hatching water body, and simultaneously controlling the hatching water temperature between 25 DEG C and 30 DEG C, the illumination intensity of the hatching pond to be less than 50lux and the environmental noise to be not more than 50 decibels until an odontobutis obscurus fry is hatched. The method for artificially propagating the odontobutis obscurus is simple and has high seedling rate.

The present invention provides an animal and poultry compound premix, which is suitable for being used for producing perfect compound feed for chickens and pigs in different physiology phases. The components of the animal and poultry compound premix of the present invention comprises VitA, VitD3, VitE, VitK3, VitB1, VitB2, VitB6, VitB12, pantothenic acid, nicotinic acid, folic acid, biotin, choline chloride, iron salt, zinc salt, cupric salt, manganese salt, iodine salt, selenote and carriers, and also comprises cobalt salt and lysine. The present invention provided the animal and poultry compound premix comprising various vitamin and microelement with the advantages of high nutritive material content, high feed transforming rate, healthy and high survival rate of the animal and the poultry after eating the premix, the dejection viscosity reducing, which is beneficial for cleaning and reducing the environment pollution; the egg laying rate of the breeding hens is high and the fertility rate and the hatching rate of the breeding hens is improved after being eaten by the breeding hens and the weights of hens are even.

The invention belongs to the technical field of feed for laying hens and particularly relates to complete feed for laying hens at brood time and a preparation method thereof. The complete feed comprises, by weight, 37-44% of corn, 18-22% of extruded corn, 0.4-0.6% of soybean oil, 18-20% of soybean meal, 9-11% of extruded soybeans, 1.5-2.5% of fish meal, 3.5-4.5% of fermented soybean meal, 1.1-1.2% of mountain flour, 1.4-1.7% of calcium hydrophosphate, 0.14-0.16% of methionine, 0.09-0.13% of choline chloride, 0.1-0.2% of baking soda, 0.2-0.3% of salt, 0.13-0.16% of microecologics, 0.01-0.03% of liquid phytase, 0.03-0.05% of liquid xylanase, 0.1-0.2% of acidifier, 0.1-0.2% of glycine betaine, 0.004-0.006% of antioxidant, 0.015-0.035% of 4% enramycin, 0.03-0.04% of vitamin complex and 0.08-0.09% of composite microelement. The complete feed can meet nutrition requirements of the laying hens at the brood time, improves immunity of the laying hens at the brood time, has remarkable effects on increasing weight and shin length of the laying hens at the brood time, enables the laying hens to reach the standard in advance, and provides a good foundation for achieving high yield at an egg producing period.

The invention relates to a method for improving laying hen hatching rate and provides a method for improving the hatching rate of hatching eggs of laying hens in the hatching process. Suitable temperature, humidity and ventilation conditions and a correct egg turning method are provided. The method has the advantages that on the premise that health high-yield breeder flocks are bred, the quality of the hatching eggs is improved, the sterilization of the hatching eggs is reinforced, and the like, by providing suitable temperature and humidity and by adopting scientific ventilation, egg turning and egg cooling methods, the laying hen hatching rate and the quality of chickens can be improved and good economic benefits can be obtained.