40results about How to "Increased labor induction rate" patented technology

The invention relates to a totally artificial breeding method for Coilia ectenes, belonging to the technical field of fish culture. The method is characterized by comprising the following process steps of parent fish source; parent fish select breeding comprising standing / flowing water combined reinforced breeding; artificial induced spawning measure comprising parent fish selection, semen collection, dug roe inspection, induced spawning water temperature confirmation, parent fish matching, hormone injection, artificial insemination and the like; microflow water incubating; and summer flower and fish fry breeding. The invention promotes the parent fish sex gland to grow to maturity and ovulate by measures of reinforcing parent fish nutrition reinforced breeding, feeding hormone, flowing water stimulating and regulating and the like and normalizes the artificial induced spawning and insemination process, originally creates a simple flowing water incubating device of a pelagic egg and reinforces the management and ecological regulation of incubation period, thereby effectively solving the technical problems of artificially breeding Coilia ectenes. The induced spawning rate of artificial breeding is 33 percent, the fertilization rate is 48 percent and the hatching rate is 44 percent.

The invention belongs to the agriculture technical field necessary for human life, and relates to a hybrid seedlings-cultivating method for improving the growth traits of the siniperca scherzeri. The method comprises the following main steps of: selecting the siniperca scherzeri as the male parent and the siniperca chuatsi as the female parent, and adopting the methods for building a plastic house to overwinter, intensively cultivate and the like; hastening the parturition by the means that the exogenous hormone is synchronously injected into the male parent and the female parent for once, and packing a parent fish by a dishtowel during artificial insemination; adopting the breeding technology and measurement such as the artificial semidry inseminating, the circuit water flowing hatching and the like, so that the use ratio of the male parent is improved by 1.5-2 times; and intensifying the cultivating management in the seedling stage and the cultivating stage by a segmented cultivating mode with the palatable bait fish. The invention successfully develops a method for improving the growth traits of the siniperca scherzeri to cultivate an improved new product which is antiretroviral, disease-resistant and faster in growth speed compared with the common siniperca scherzeri. Meanwhile, the existing hybrid seedlings-cultivating method of the siniperca scherzeri is changed, the synchronous mature of the parent is guaranteed, the propagation time is prolonged, the operation is simpler and more convenient, and the production efficiency and the survival rate of the artificial propagating and the hybrid seedlings hatching are improved.

The invention provides a hybrid carp and pengze crucian carp hybrid breeding method and belongs to the technical field of freshwater fish hybrid breeding. The hybrid carp and pengze crucian carp hybrid breeding method aims at solving the problem that no proper hybrid method exists in the prior art to prevent carp diseases in the northern area. The method includes the steps that a first filial generation is obtained by regarding a German mirror carp as a female parent and a jian carp as a male parent for hybridization, an irregular male carp with the high growth speed and a few large body surface scales serves as a male parent, a batch of plump female pengze crucian carps with more than 31 lateral line scales and high growth speed are optimized out through two-generation breeding to serve as a female parent, parent mature promotion and artificial propagation are carried out on the basis of optimizing and directive breeding of hybrid parents, hybrid carps coincident with the pengze crucian carp female parent in appearance can be obtained after distant hybridization is carried out, hybrid generation has no carp characters, and the hybrid carp and pengze crucian carp hybrid breeding method has the advantages of being high in growth speed and disease resistance, and is of great significance in improving unit yield, increasing breeding benefits, breeding new species and achieving large-scale fry rearing.

The invention relates to the technical field of aquaculture, in particular to an artificial breeding method for acipenser dabryanus. Oxytocin is injected into female acipenser dabryanus two times, wherein the interval between two times of injection is 12 hours, and the injection amount of the first time accounts for 1 / 3 to 1 / 2 of the total dose. The one-time injection method is adopted for male acipenser dabryanus, wherein injection of the male acipenser dabryanus is synchronous with the first time of injection of the female acipenser dabryanus, and the dose of the male acipenser dabryanus is half that of the female acipenser dabryanus. Fertilization is conducted according to a half-dry method, water, eggs and seminal fluid are mixed according to the proportion of 75:50:1, and the mixture is stirred for 2 minutes to 3 minutes. A complete acipenser dabryanus artificial breeding technique process is provided, and technical support is provided for large-scale artificial breeding; due to the adoption of the method, the hatchability of acipenser dabryanus can reach 85% or higher at most, and restrict factors in the acipenser dabryanus artificial breeding process are eliminated.

The invention relates to the field of beluga culture, particularly discloses a beluga artificial propagation method and application of a carp pituitary gland, and relates to a beluga artificial propagation method. The method comprises the steps that 1, nutrient enrichment culture is performed on a beluga milter parent and a beluga raun parent; 2, the beluga milter parent and the beluga raun parent obtained after nutrient enrichment culture are subjected to low temperature stimulation; 3, the water temperature is increased to the pre-spawning induction temperature, and spawning induction medicine administration is performed on the beluga milter parent and the beluga raun parent so as to be subjected to spawning induction; 4, free eggs and seminal fluid are collected to be subjected to artificial fertilization and incubation, wherein the spawning induction medicine is the carp pituitary gland. The invention further relates to application of the carp pituitary gland for beluga artificial propagation, and application of the carp pituitary gland for preparing medicine for artificial propagation of beluga. The beluga spawning induction medicine is easy to obtain and prepare, the spawning induction rate of spawning induction propagation performed by adopting the beluga spawning induction medicine is high, the fertilization incubation effect is good, and the postpartum parent fish survival condition is good.

The invention provides a method for artificial breeding of wild Schizothorax Lhasa, comprising the following steps: A, broodstock collection: collect Lhasa Schizothorax broodstock in the Yarlung Zangbo River from early April to late May each year; B, artificially induced labor: before induced labor, First anesthetize the parent fish with an anesthetic, and then give the female fish and male fish a stimulant injection; C. Artificial insemination: After the parent fish is anesthetized with an anesthetic, collect semen and eggs, and use dry insemination; D. Fertilized eggs hatch: sarcomeres appear Before the period, place the fertilized eggs in the hatching frame for hatching in running water; after the fertilized eggs develop to the sarcomere stage, remove the dead eggs, and move the fertilized eggs into the fish egg incubator to hatch; E, fry open. Realize large-scale artificial breeding of Lhasa Schizothorax.

The invention discloses a method for artificial propagation of copperfish. The steps are: (1) Broodstock selection: According to the external characteristics of the broodstock and the eggs dug out by the egg digger, select the broodstock with high maturity of gonads as the broodstock for induced labor; (2) Preparation and injection of oxytocin drugs: Body weight using normal saline to prepare the oxytocic drug luteinizing hormone releasing hormone A 3 , fish pituitary gland and chorionic gonadotropin; the injection adopts the double injection method, the water temperature is 20.5~22.0°C, and the needle distance is 8~10 h; (3) Artificial induced labor and insemination: After injecting the oxytocin drug, check the broodstock from time to time, Ovulation and fertilization are found, and artificial insemination is carried out. The insemination method is wet fertilization; (4) Incubation: the obtained fertilized eggs are poured into a conical incubator for incubation, and the fry are moved to the fry incubation box for seed cultivation after they emerge from the film. The operation is simple, and the artificial reproduction rate and fry survival rate (above 85%) are effectively improved, laying a solid foundation for the proliferation and release of copperfish population resources.

The invention provides a method for artificially induced spawning of ovate pompano, comprising: (1) selecting broodstock, (2) intensively cultivating the broodstock to induce spawning, increasing the water temperature by 0.3-0.5°C every 2-3 days; 6-10% of the pool water was replaced with compound seawater every day; the enhanced bait was fed 3-4 times a day; the light was extended for 10-15 minutes every two days; (3) oxytocic agent was injected with temperature control for 3 times to artificially induce labor; After the temperature-controlled injection of oxytocic agent for the first time, adjust the water flow rate to 0.8-1.4m3 / s, and extend the photoperiod to 15L / 9D-16L / 8D; (4) Artificial insemination and hatching. In the present invention, the broodstock is induced to be induced by intensive breeding, and three temperature-controlled injections are used to induce the broodstock to induce spawning under different water temperature environments, and the water flow rate and the light cycle are increased after the injection of the oxytocic agent, so as to effectively improve the broodstock induced spawning effect, and The effect time is shortened, and the fertilization rate and hatching rate are high.

The invention discloses a low-loss and high-efficiency artificial propagation method for Taiwan loach, which is characterized in that it comprises the following steps: (1) Prenatal cultivation of species of loach: selecting fast-growing and robust individuals from the first-year-old fish of the offspring one year in advance The commercial loach is used as a seed loach, and it is intensively cultivated for 0.5-3 months. (2) The selection of the seed loach: the water temperature reaches 18 degrees Celsius, and each group of male and female loach is placed in the parent loach classification screening tank for screening and matching; (3) Artificial induced labor ; (4) artificial insemination; (5) postpartum pro-loach care. Effectively select brood loach, improve the simultaneous sexual maturation of male and female and the same batch of brood loach, increase the induced labor rate, emergence rate and artificial reproduction efficiency, and reduce the death loss of brood loach in artificial breeding.