195 results about "Common carp" patented technology

The invention discloses giant salamander compound bait and a production method thereof. The giant salamander compound bait includes bait for young salamanders and adult salamanders and bait for parent salamanders. The salamander compound bait takes fresh crucian carps, carps, grass carps, loaches and bull frogs as main materials and takes aggregates, mineral powder, micro amino acid and the like as auxiliary materials. After the main materials are mixed and minced, the auxiliary materials are added, and starch is then mixed. After being stirred and rubbed, the materials are filled by plastic casings in a sausage stuffer and dotted. Finally, sausages are sterilized at a temperature of 95-100 DEG C. The giant salamander compound bait can replace fresh fish and shrimp bait to feed giant salamanders. When the giant salamander compound bait is used for feeding, the plastic casings are stripped off, and the giant salamander compound bait is cut into strip materials suitable for the giant salamanders to swallow and thrown into a salamander pond. The giant salamander compound bait has good palatability. Practices prove that when the bait is used for feeding the giant salamanders, the breeding cost of the giant salamanders can be reduced by 30-50%, the growth rate of commercial salamanders can be increased by 10-30%, the salamander reproduction rate can be increased by 50-100%, and thedisease incidence rate of the giant salamanders is obviously reduced.

The present invention discloses one kind of carp feed, which consists of soybean dregs 35-50 wt%, cotton seed dregs 15-25 wt%, DDGS 3-8 wt%, fish meal 3-8 wt%, starch 6.2-16.1 wt%, corn dregs 8-12 wt%, calcium dihydrogen phosphate 1.5-1.7 wt%, salt 0.2-0.4 wt%, Chinese medicinal stone 1.5-2.5 wt%, soybean oil 0.5-1.5 wt%, and premixed fish feed material 0.8-1.2 wt%. It has comprehensive balanced nutrients, and can promote the growth of carp and raise its disease resistance.

The invention discloses a culturing method for sex reversal of a female carp to a male carp. The culturing method comprises the following steps that A. squeezing an abdomen of a 10-11-month-old carp, and separating a male carp with out-flown semen and a carp with no out-flown semen; B. inserting a copper roe digging device in a genital pore of the carp from which semen can not be squeezed, and selecting the carp capable of obtaining roe particles to cultivate the carp in a cement pond; C. according to the weight of the carp, feeding the carp with dosing fodders containing 17 alpha- methyltestosterone every day, and mix-injecting domperidone, luteinizing hormone releasing hormone and carp pituitary gland in the thoracic cavity of the carp in each five days; and D. after continuously processing the test carp for 2 months, squeezing the abdomen of the carp, the test carp with out-flown milky white semen is the sex reversal carp which is a female on genotype and a male on physiology. The culturing method is easy and feasible and is convenient in operation, and can be used for sex reversing the female carp on genotype into a male carp on physiology. The growth speed of the filial generation cross bred by the sex reversal carp and the common carp is fast and the economic benefits are remarkable.

The invention relates to an artificial eel propagation method, which includes: a, ripening parent fishes, breeding catadromous parent reels for seven days, gradually increasing salinity of water, and subjecting the parent eels to back intramuscular injection of ripening agent-carp pituitary gland homogenate and HCG (human chorionic gonadotropin); b, performing induced spawning of the parent eels, subjecting female eels to injection of oxytocin 17 alpha-hydroxyl progesterone and HCG, subjecting sperm-producing male eels to injection of mixture of CPE (carp pituitary extract) with HCG, collecting naturally spawned fertilized eggs on the next day, and subjecting the female eels laying no eggs to semi-dry artificial insemination; and c, hatching the fertilized eggs, immediately transferring the fertilized eggs to a special-made hatching barrel for hatching, and slightly aerating, changing half of water every four hours until fry are hatched successfully. The artificial eel propagation method has the advantages that anesthetic loss and operational injury can be prevented, injection dosage of hormones is reduced, a great amount of eels can mate and lay eggs naturally under artificial induced spawning, artificial insemination can be complete securely in a planned way, level of high-quality fertilized eggs and alevin of eels artificially propagated is increased.

The invention provides an artificial breeding method for glyptosternon maculatum. The artificial breeding method includes the following steps that A, after wild glyptosternon maculatum parent fishes are immersed in a saline solution, sex discrimination is conducted, and female fishes and male fishes are collected; B, a medicine composition for female fish spawning induction is prepared from 5 micrograms of lutropin releasing hormones and one carp hypophysis per kg of the female fishes, 24 hours after injection, the abdomens of the female fishes are slightly pressed, and if no free egg granule flows out, a second shot of spawning induction medicine of the same dosage is injected; C, dry method fertilization is adopted; D, after egg membranes of zygotes disengage, the zygotes are poured into an incubation tank to be incubated, when glyptosternon maculatum fry begin to swim at the bottom of a pool, exogenous nutrition is turned to, and animal live bait and artificial compound feed are fed. The nature rule of the wild glyptosternon maculatum parent fishes is grasped, the artificial propagation technology of glyptosternon maculatum is studied, a set of feasible artificial spawning induction and artificial incubation method is formed, and artificial large-scale breeding of glyptosternon maculatum is achieved.

The invention discloses a monoclonal antibody for resisting to cyprinus carpio haematopterus IgM, a hybridoma cell strain and application of the monoclonal antibody. The monoclonal antibody for resisting to cyprinus carpio haematopterus IgM is secreted and produced by the hybridoma cell strain A5-E10 with the preservation number being CCTCC NO: C2015218. The monoclonal antibody can be applied to detection of certain pathogeny of cyprinus carpio haematopterus or common carp or a vaccine specific antibody of an aquatic product, thereby early-stage disease diagnosis and vaccine using effect evaluation are conducted, high clinical application and promotion value is achieved for epidemiological investigation and pathogeny diagnosis conducted on disease of cyprinus carpio haematopterus or common carp, and reference is provided for prevention and treatment of other cultured fish diseases.