50 results about "Estrus synchronization" patented technology

The invention discloses an extraction method of a micromolecular sheep placenta extract and application of the micromolecular sheep placenta extract in the field of skin-care products, belonging to the technical field of biology. The extraction method disclosed by the invention comprises the following steps of obtaining a lot of sheep pregnant in the same period by adopting synchronization of estrus, taking out sheep fetus after 85-100 days through an operation method to obtain body homogenate, carrying out repetitive freeze-thawing and splitting cells, degenerating at high temperature, sterilizing, precipitating hybrid protein, carrying out 30 KD ultrafiltration after centrifuging at high speed so as to remove toxic and harmful components and impurities, such as macromolecular hybrid protein, bacteria and endogenous virus, so as to obtain a pure micromolecular sheep placenta extract product, and carrying out ultrafiltration and concentration of the micromolecular sheep placenta extract product by using a 1 KD ultrafiltration component. The micromolecular sheep placenta extract disclosed by the invention can be widely used in the fields of skin-care products, beauty products, wound healing products, health-care products, scientific searches and the like; the extraction method disclosed by the invention provides a novel important way for producing the sheep placenta extract; furthermore, the compositions of the micromolecular sheep placenta extract are authenticated for the first time, and thus, theoretical foundation is provided for scientifically using the sheep placenta extract.

The invention discloses a sheep breeding method. The method comprises the steps of selection of a breeding sheep, preconception management, estrus synchronization treatment, artificial impregnation, conception management, preparation before delivery and delivery. In the breeding process of sheep, preconception culture is taken into consideration, concentrated feeds serve as main feeds, rough feeds serve as auxiliary feeds, various conditions of the body of the breeding sheep are enhanced, and the physical quality of a sheep baby after birth is guaranteed; meanwhile, the delivery is expedited by medicines, the conception consistency of the sheep is guaranteed, a pregnant sheep is convenient to manage, and the management difficulty and the management cost are reduced.

The invention provides a method for inducing estrus synchronization of replacement gilts, and belongs to the field of animal estrus induction and artificial insemination. The method for inducing estrus synchronization of the replacement gilts is provided, aiming at the problem that estrus of the replacement gilts cannot be synchronous. The replacement gilts are feed with altrenogest within the given time, and combined with intravenous injection of eCG and hCG in the fixed time, so that the replacement gilts can be oestrous synchronously in the preset time. The method is beneficial for large-scale production of gilts.

The invention discloses a method for inducing estrus and ovulation of a female cat, and belongs to the technical field of animal artificial propagation. The invention provides the method for inducingestrus synchronization and superovulation of the female cat in order to solve the problem that estrus and ovulation are difficult to synchronize in artificial propagation of the female cat. The methodspecifically comprises the following steps: continuously feeding adult healthy female cats with altrenogest with a dosage of 0.01-20mg / cat / day for 10-20 days, stopping feeding the altrenogest for 2 to 3 days, injecting 10-1000IU of pregnant mare serum hormone into the muscle of the female cat, and intramuscularly injecting 10-1000 IU of human chorionic gonadotropin after 72-96 hours, so that thefemale cat can perform estrus synchronization and superovulation within a preset time. The key technical difficulty of artificial breeding of the domestic cat or the feline is solved.

The invention discloses a method for in-vitro cloned embryo transplantation of a pregnant sow. The method comprises the following steps: feeding an estrus synchronization agent to each sow at a fixedpoint every day, after continuously feeding each sow with the estrus synchronization agent for 18 days, performing intramuscular injection of PG600 5 days later, and selecting an individual with normal estrus for in-vitro cloned embryo transplantation 1 day later. According to the method, a proper microenvironment is provided for the pregnant sow after the cloned embryo is transplanted by virtue of feeding or injection of the estrus synchronization agent and the PG600, synchronism of the estrus, ovulation and embryo transplantation time of the pregnant sow is controlled, and the success rate of cloned embryo implantation and the pregnancy rate of the pregnant sow are greatly increased, so that batch production of cloned pigs is realized, and a foundation is laid for large-scale productionof the cloned pigs.

The invention provides a product for promoting oestrus of female mammals, the product comprises kiss-actuator (Kp) and gonadotropin releasing hormone (GnRH), and oestrus and conception of female animals can be remarkably promoted through the synergistic effect of the kiss-actuator (Kp) and the GnRH. The invention further provides a method for promoting oestrus of the female mammals, an effective dose of Kp is applied in the early oestrus period of the female mammals, then an effective dose of GnRH is applied, follicle development of the female mammals can be effectively promoted, the oestrus rate and conception rate of the female mammals are increased, the missed mating rate of the female mammals with recessive oestrus is reduced, and the oestrus of the female mammals is promoted. The device is suitable for being applied to the synchronous oestrus and timed insemination procedures of the female livestock.

The invention discloses an altrenogest injection and a preparation method and application thereof. The altrenogest injection is obtained by mixing altrenogest and a solvent, and the solvent is obtained by mixing dimethyl sulfoxide and sucrose acetate isobutyrate according to the mass ratio of 4 to 1. The prepared altrenogest sustained-release injection can realize in-vitro slow release, is good in stability, can reduce the administration frequency of pigs, reduces the labor intensity of administration work, and can effectively popularize a sow estrus synchronization technology.

The invention provides a method for improving reproductive performance of black goats. The effect of single-birth high yield of the goats is achieved through the combination of estrus synchronization and superovulation. The invention mainly relates to a breeding method for increasing the number of single-time lambing of goats, and aims to provide a breeding method for improving the efficient reproductive performance of black goats so as to achieve the purposes that the black goats can produce more birth in one birth, the number of lambing is increased, the breeding rate of the goats is increased, and the economic benefits of farmers are increased.