1758 results about "Fish owl" patented technology

The invention relates to a loach fry artificial breeding method which is characterized by including the steps of selecting healthy parental loaches above two winters old and conducting enrichment culture for 25-35 days; then conducting hybrid injection of HCG (human chorionic gonadotropin) and DOM (domperidone) for artificially hastening parturition; after 10-14 hours after parturition hastening, collecting fertilized eggs; and then conducting artificial incubation and larva breeding, thus obtaining the loach fry. In the invention, through the enrichment culture of the parental loaches, synchronous maturing is promoted and oogonium percentage is enhanced; with the parental loach parturition hastening technology, synchronous egg laying can be realized; with the hybrid injection method, the ovarian development and the egg laying effect of the loaches can be promoted, so that the synchronous egg laying rate of the parental loaches achieves 40%; and an inflation incubation way is adopted on the fertilized eggs, so that the incubation rate of the fertilized eggs can be greatly improved. Through enrichment culture, the survival rate of the loach fry can be enhanced remarkably.

The fish trap system includes an enclosure having a revolving trap door attached to a coned gate Gargoor. Still and video cameras are included in the enclosure to provide snapshot and moving pictures of fish caught in the trap. A buoy (float) is included, from which images of fish in the enclosure are relayed via digital link to the user on the Internet. Moreover, user-controlled electrical gates are provided to either retain a fish or release a fish by closing and opening the gates via the Internet connection. The video camera, being disposed in the trap housing, is movable and provides views of the area around the fish trap when submerging the trap until it reaches the ground in order to locate the right flooring for the fish trap. Aside from fishing purposes, the fish trap system may be used for experimental purposes.

The invention relates to a feed of laying breeding geese, and the feed comprises, by weight: 28-32 parts of corn, 18-22 parts of paddy, 8-12 parts of wheat bran, 2-3 parts of fish meal, 13-18 parts of soybean meal, 1-3 parts of trace element, 1-3 parts of calcium hydrogen phosphate, 0.01-0.03 parts of methionine, 0.01-0.011 parts of multi-vitamin, 0.01-0.03 parts of choline, 0.073-0.078 parts of vitamin AD, 0.09-0.11 parts of sodium selenite, 3-5 parts of stone powder, 8-12 parts of grass meal and 0.20-0.25 parts of grit. The feed of laying breeding geese in the invention has extensive material source, low cost and simple processing technology. Breeding geese fed with the feed of the invention can have a high laying rate and a prolonged laying period.

The invention discloses a percocypris scaled artificial propagation method. The percocypris scaled artificial propagation method comprises the following steps of (1) culturing of parent fishes: using a flowing water pond as a parent fish culturing pond to culture; (2) distinguishing of male and female parent fishes: utilizing a B-ultrasonic scanner to check the abdomens of the parent fishes to distinguish the male and female parent fishes; (3) artificial maturation induction: injecting luteotropin into the distinguished female fishes to release hormone A2 to accelerate induction; (4) artificial spawning induction: performing artificial spawning induction on the selected male and female parent fishes; (5) artificial inseminating; (6) hatching: performing the flowing water and light shielding hatching on the fish spawns after artificial inseminating in a yarn silk hatching framework; (7) culturing of fish fries: when the hatching fish fries start to flatly swim, using the fairy shrimps or crushed water earthworms as an opening bait; after the fish fries are completely domesticated to eat an artificial matching feed, moving the fish fries to a fish fry culturing pond to culture. The method has the advantages that the implementation is easy, the operation is simple and convenient, and the distinguishing rate of the male and female parent fishes can reach more than 90%; the spawning induction rate of the matured parent fishes which are artificially cultured reaches 75%.

The invention relates to a method for efficient polyculture of environmental-friendly fresh water fishes, shrimps and crabs. The method is characterized in that according to the existing water environment characteristics of an aquaculture water area, an organic ecological aquaculture mode based on a food chain is established, suitable aquatic plants, aquatic animals and bottom fauna are selected, and a self-circulation environmental-friendly ecological system without outside feeding is constructed. The method can achieve the high unification of economic, environmental and social benefits.

The invention relates to an indoor intensive artificial breeding technique of Yangtze River Coilia ectenes, which comprises the steps of Coilia ectenes parent fish enhanced breeding, artificial spawning induction, artificial hatching and fingerling breeding. The indoor intensive artificial breeding technique of Yangtze River Coilia ectenes is characterized in that Coilia ectenes adult fish which is alternately cultured for three years by using seawater and freshwater is used as parent fish for the Coilia ectenes parent fish enhanced breeding, female parent fish individuals with clearly visible ovary outlines and softer inferior bellies and male parent fish individuals with milk white semen which flows out when the bellies are slightly pressed are selected for the artificial spawning induction, the female-male ratio is 1:3, the female parent fish and the male parent fish naturally mate for laying eggs and fertilization, temperature-controlled inflated hatching in still water is conducted to fertilized eggs, and the fingerling breeding comprises culture at four stages, wherein the culture at the first stage comprises the steps of temporarily culturing newly hatched fries from the time that fries are newly hatched to the time that the fries open mouths, the culture at the second stage comprises the step of culturing the fingerlings from body length being 3mm to body length being 20mm, the culture at the third stage comprises the step of culturing the fingerlings from body length being 20mm to body length being 30mm, the culture at the fourth stage comprises the step of culturing the fingerlings from body length being 30mm to body length being 40-50mm, and the fingerlings can be put in a pond for conventional culture after the body length of the fingerlings reaches 40-50mm.

The invention relates to an artificial intensive incubation method for cyprinus carpio koi fries. The method comprises the following steps of: injecting 1 to 3mg of oxytocic hormone domperidone and 2 to 5mu g of chorionic gonadotropin into every 1kg of parent fish of cyprinus carpio koi; filling water into a hybridization pool; putting a mixture of collected roe and semen into 1 to 3 percent physiological saline for insemination by an extrusion method; adhering oosperm to an artificial egg collector by using a brush and putting into an incubator in the hybridization pool for incubation, wherein the water temperature of the hybridization pool is 18 to 23 DEG C; treating by using 18 to 24 ppm saline solution for 15 to 30 minutes; and incubating the roe at the water temperature of between 15 and 25 DEG C for 5 to 7 days for membrane breaking and fry emergence. The method has the obvious advantages of improving the disease resistance of the fries, increasing the incubating rate and survival rate and forming the cyprinus carpio koi fry production technology of intensification, industrialization, mass production and high quality.