9results about How to "Improve conception rate" patented technology

The invention discloses a novel embryo transplant gun for cattle which can bend and extend forward along with the uterine horn, and relates to the field of embryo transplant guns. The invention comprises a gun barrel, a gun core and a culture fluid capillary, wherein the culture fluid capillary is matched and installed in a barrel hole at the inner end of the gun barrel, a piston is arranged in the culture fluid capillary, the gun core is arranged in the gun barrel, and the gun barrel also comprises an inflatable part, a hollow steel needle and an extension catheter, wherein the extension catheter is a hose with a hollow interior. The invention pushes the embryo in the capillary into the extension catheter through the piston, and then pierces the piston through the hollow steel needle to communicate with the inner cavity of the capillary, an operator pushes the piston handle of the syringe to allow the gas in the syringe to enter the extension catheter through the hollow steel needle, and relies on the gas to inject the embryo in the extension catheter into the uterine horn of the cattle, thereby solving the problem that the gun core cannot inject the embryo into the uterus after the capillary is connected to the extension catheter, and the operator does not need to grab the front end of the uterine horn, thereby greatly reducing the operating difficulty, facilitating the use of the operator, and indirectly improving the conception rate.

This invention discloses a novel use of pyrroloquinoline quinone (PQQ) in improving conception rates after artificial insemination in beef cows, as well as compositions containing rumen-protected PQQ and their application methods, belonging to the field of animal nutrition and reproductive technology. Addressing the problem of low conception rates in beef cattle after artificial insemination due to early embryonic oxidative stress death, this invention proposes continuously adding an effective dose of rumen-protected PQQ to the cow's diet starting from the day of artificial insemination. This method significantly increases the conception rate of cows from approximately 40.00% in the control group to 80.00%. This invention is safe, effective, and easily applicable in large-scale farming.

The embodiment of the present application provides a method for detecting estrus of cows, including: when a first target cow whose vertical acceleration parameter meets the vertical acceleration parameter threshold interval is detected in the herd, the first target cow's climbing behavior position and the distribution of the surrounding cattle within a certain distance are obtained through Bluetooth wireless positioning technology; at the same time, the visual acquisition system in the shed is triggered to obtain a first image around the first target cow; further determine whether the second target cow is mounted based on the first image; determine that the state of the mounted second target cow is in estrus. According to the distribution of the herd positions collected by the Bluetooth positioning technology and the image acquisition technology at the same time, the number of the mounted cow is determined, or the appearance characteristics of the mounted second target cow are identified through visual tracking to realize individual cow identification. This technology can detect the estrus of cows in a timely and accurate manner, improve the efficiency of estrus detection of cows, facilitate insemination and other operations, and is conducive to improving the conception rate of cows, thereby improving the economic benefits of beef cattle breeding.

The utility model belongs to the technical field of auxiliary equipment for sow insemination, and particularly relates to an insemination back pressing device which comprises a fixing plate placed on the back of a pig and a protective shell arranged on the upper surface of the fixing plate, and a first movable part and a second movable part are hinged to the two ends of the fixing plate respectively. The first movable part and the second movable part are arranged in the direction from the back of the pig to the navel, the first movable part and the second movable part comprise a plurality of movable blocks which are mutually hinged, a connecting part is arranged between the free ends of the first movable part and the second movable part, a plurality of air bags are arranged on the surface of the side, close to the pig, of each movable block, and the air bags jointly communicate with an air pump; the air pump is arranged in the protective shell, and the air pump is electrically connected with a control unit which is also arranged in the protective shell, by adopting the technical scheme, the problems that an existing sow back pressing device cannot well simulate the mating action of boars, and stimulation to the sows is not ideal can be effectively solved.

The application discloses a method for regulating porcine estrus synchronization by using a new modified GnRH analogue, and belongs to the technical field of veterinary reproduction regulation. n The application adopts Fmoc-NH-PEG n -COOH as a bifunctional linker to perform site-specific coupling modification at a non-active safety site of a GnRH agonist / antagonist, and compound natural antioxidant / anti-apoptotic active ingredients to obtain a sustained-release preparation, and single administration achieves long-acting estrus inhibition for 20-150 days, and the inhibition is released by cooperating with late GnRH agonist injection to induce synchronous estrus ovulation of the whole group. The method can be adapted to 3-week, 4-week, 5-week and quarterly super-long cycle batch management, completely replaces allylgestrinone, significantly reduces labor cost, improves estrus synchronization rate, pregnancy rate and healthy piglet rate, significantly reduces ovarian cyst and follicular atresia rate, has no progesterone residue, has high biological safety, and is especially suitable for reproduction regulation of large-scale pig farms in a hot stress environment.

The invention provides a method for improving the conception rate of meat cows by using rumen bypass linseed oil and choline chloride. In the cow pregnancy stage, rumen bypass linseed oil and choline chloride are supplemented in basic ration at the same time, a suitable nutrition environment is provided for pregnancy recognition and the occurrence of the physiological process of embryo implantation, the rumen bypass linseed oil and the choline chloride can promote each other, embryonic development is effectively promoted, the conception rate after artificial insemination is remarkably increased, and the reproductive performance of meat cows is effectively improved. The method can be widely popularized and applied in production.

The invention discloses a sheep non-surgical embryo transplantation instrument set, which relates to the field of surgical instruments for animal husbandry. The instrument set comprises a catheter, a cervical dilator, a grabber driving mechanism and N grabbers. The cervical dilator is arranged in the catheter and can slide in the catheter. The invention extends an elastic grabber and the end of the catheter into the sheep vagina, and then relies on the elastic force of a spring to slide a sliding sleeve toward the end of the catheter. The sliding sleeve squeezes three elastic grabbers during the movement, so that the three elastic grabbers are closed with each other and hook the end of the sheep's cervical canal, and then the catheter can be pulled backward to pull the cervical canal outward, so that the staff can extend the cervical dilator through the catheter into the sheep's cervical canal for dilation, so that the staff can extend the embryo transplant tube into the uterus and insert the embryo into the sheep's uterus. The instrument is not only simple in structure and easy to operate, but also can reduce damage to the sheep's body and improve the conception rate, thereby meeting the use needs of users.

The invention relates to the technical field of animal husbandry breeding and biology, and particularly discloses a preparation for improving the bovine embryo implantation survival rate and a preparation method and application thereof. The invention provides a preparation for improving the survival rate of bovine embryo implantation. The preparation comprises a preparation A and a preparation B, the preparation A is prepared from the following components in concentration: 5 to 10g / L of cane sugar and 0.2 to 0.8 g / L of immunosuppressant; the solvent is water; the immunosuppressive agent is prepared by mixing inositol and 6-mercaptopurine in a weight ratio of (0.1-1): (0.1-1); the preparation B is prepared from the following components in concentration: 1 to 5g / L of water-soluble chitosan, 1 to 5g / L of rhizoma anemarrhenae extracting solution, 0.5 to 1.5 g / L of water-soluble maca powder and 0.1 to 0.5 g / L of magnesium salicylate; the solvent is normal saline. When the preparation provided by the invention is applied to a bovine embryo transplantation test, the breeding performance of the conception rate, the calving rate and the calf survival rate of a receptor cow can be obviously improved.

The invention relates to the technical field of livestock breeding, and particularly discloses a method for improving Xinjiang Tianshan yak interspecific hybridization fertilization, which comprises the following steps: cow selection, cow management, disease prevention, estrus regulation and control, vitamin ADE injection, thrombus removal and cloprostenol sodium injection, estrus identification, three-time artificial insemination, gonadorelin injection, pregnancy test, miscarriage prevention and post-hybridization management. According to special physiological characteristics and interspecific isolation problems of yaks in a high-altitude, cold and oxygen-deficient environment, the estrus rate and conception rate of the yaks are improved through environment selection, season regulation and control, male parent screening and scientific cow management, and the long-term problem that the interspecific hybridization conception rate of the yaks is low is solved.