7 results about "Trout/salmon" patented technology

This invention discloses a method for large-scale breeding of all-male salmon and trout, belonging to the field of fish sex regulation breeding technology. The method includes: collecting fertilized eggs from different families of the same species of salmon and trout, artificially incubating them to obtain fry, and inducing sex reversal in the fry by using 17β-estradiol when they begin feeding; subsequently, raising the fry to sexual maturity, selecting individuals with a female phenotype, and then using sdY as a sex identification gene, selecting pseudo-females with genotype XY by quantitative real-time PCR; pairing the sexually mature pseudo-females with genotype XY with normal males with genotype XY, and obtaining super-males with genotype YY through artificial insemination; pairing the sexually mature super-males with females with genotype XX, and producing all-male salmon and trout with genotype XY on a large scale through artificial insemination. This invention overcomes the problem that existing technologies cannot achieve large-scale breeding of all-male salmon and trout.

This utility model relates to the field of aquaculture technology, specifically a buffer-type salmon and trout transfer device, including a conveying chamber with a fish storage box fixedly connected inside. This utility model features a first transport trough, a second transport trough, a rotating shaft, and a turntable. When the operator pulls the second transport trough outward, a slider inside the trough moves outward, extending the second transport trough so that its length contacts the water surface, reducing salmon and trout mortality due to height limitations. Pressing down on the second transport trough causes the first transport trough to rotate downward, which in turn causes the rotating shaft to rotate, allowing the second transport trough to contact the water surface. Pulling up the lifting block raises the gate, allowing the salmon and trout to flow from the fish storage box into the first transport trough. The cushioning effect of the rubber pad reduces salmon and trout mortality and improves the device's efficiency.

The utility model relates to the field of ovum collection clamp device discloses a adjustable visual ovum collection clamp device for salmon trout, including the clamp main part, the clamp arm bottom of clamp main part is nested with movable rod respectively, and every movable rod bottom is fixed with the ovum taking ring and installed respectively, the fingerstall is fixed with installed respectively on the both sides of the clamp arm of clamp main part, and every movable rod is fixedly connected with every movable rod through the limiting assembly respectively to every clamp arm of clamp main part, the both sides of the clamp arm of clamp main part are mutually close one end and are elastically connected through first spring respectively, and the handle one end of clamp main part is fixed with the lighting lamp, one movable rod side wall is fixed with the magnifying glass, the utility model discloses the device is convenient for the ovum collection clamp process of salmon trout fish egg.

The utility model discloses a salmon and trout roe hatching device, which relates to the technical field of roe hatching devices, and comprises a rack, a support frame is fixedly connected to the top of the rack, a raw water inlet pipe is fixedly connected to the side wall of the rack, one end of the raw water inlet pipe is connected with a raw water tank, and a cooling and heating machine is fixedly mounted on the inner bottom surface of the rack. Water is added into the oxygenation pump through the raw water inlet pipe, the oxygenation pump is matched with the oxygenation pipe to discharge oxygenated water into the biological treatment pond, and the water in the biological treatment pond flows to the drainage pipe through a pipeline between the isolating valve and the treatment pond drainage valve, is guided to the circulating water pump through the drainage pipe and is pumped into the cooling and heating machine through the circulating water pump. According to the salmon and trout roe hatching device, the cooling and heating machine is matched with the flow guide pipe and the water discharging pipe to be used for adding temperature-adjusted water into the hatching drawer bodies, by arranging the cooling and heating machine, the temperature of circulating water can be adjusted, the water temperature is made to be suitable for salmon and trout roe growth, and the problems that an existing salmon and trout roe hatching device is not easy to control the water temperature, and salmon and trout roe hatching is affected are solved.

The utility model discloses a salmon and trout roe hatching device relates to hatching device technical field, including outer box and hatching box, the inside of outer box is equipped with hatching box through rotating shaft, the inside of hatching box is equipped with fixed column, the top of outer box is equipped with connecting strip, the top of fixed column is equipped with transmission shaft, and the transmission shaft is equipped with transmission shaft. A dispersion fan is mounted on the lower surface of the connecting strip; a water tank is mounted on the left side of the outer box; an overflow pipe is mounted above the left side of the water tank; placing plates are installed on the left side and the right side of the fixing column through hinge bases correspondingly, limiting plates are installed on the left side and the right side of the fixing column correspondingly, and limiting bolts are installed on the limiting plates. According to the salmon and trout roe hatching device, the dispersing fan blows air to the placing plate, so that salmon and trout roes on the placing plate are dispersed preliminarily, sufficient space is provided for the roes, mutual extrusion is reduced, material exchange in a hatching environment is facilitated, the breathing efficiency of the roes is improved, and healthy development of the roes is promoted.

The utility model belongs to the technical field of aquatic product processing, and particularly relates to a salmon and trout viscera crude fish oil extraction system. Comprising a raw material storage box used for storing salmon and trout visceral meat slurry, a screw feeder used for conveying the visceral meat slurry in the raw material storage box to a stacked screw machine, the stacked screw machine used for conducting filter pressing on the visceral meat slurry and separating the visceral meat slurry into residues and an oil slurry mixture, and a temporary storage box used for containing the oil slurry mixture. The settling tower is used for cooking the oil-slurry mixture to extract crude fish oil, the plate-and-frame filter is used for filtering the crude fish oil to remove viscera waste, and the crude fish oil storage box is used for containing the filtered crude fish oil. The system is optimized and improved on the basis of a cooking process route, the extraction rate of crude fish oil is improved, and the whole system has the characteristics of low cost, simplicity and high efficiency.

The utility model discloses a transfer device for salmon and trout culture relates to aquaculture technical field, including culture box and transfer pipeline, the bottom of culture box is provided with the base, and the right side of culture box is provided with the fish outlet, and the right side of fish outlet is connected with the transfer pipeline. Threaded sleeves are connected to the left side and the right side of the bottom of the breeding box, telescopic rods are arranged at the corners of the bottom of the breeding box, the breeding box is located above the base to form a lifting structure, a hose is connected to the left side of the transfer pipeline, a mounting plate is fixedly mounted on the left side of the hose, and the mounting plate is mounted on the outer side of the fish outlet. The transfer device for salmon and trout culture has the advantages of being adjustable in height, capable of guaranteeing water quality, convenient and fast to transfer and the like, the height of the culture box is adjusted according to the quantity of transferred fishes or the butt-joint transfer height, a convenient and fast disassembly and assembly structure of the transfer pipeline facilitates later cleaning and maintenance, and the transfer device is suitable for transfer work of salmon and trout culture.