9 results about "Pond loach" patented technology

The present invention provides a method for domesticating mandarin fish using large-scaled paraloach as transit bait, and belongs to the field of freshwater fish seed breeding. The mandarin fish domestication method provided by the present invention goes through four stages: starvation → live bait feeding → transit feeding → feed, and the transit feeding of mandarin fish involved includes: fresh dead loach coated with powder → fresh dead loach coated with powder + ice-fresh loach coated with powder → ice-fresh loach coated with powder + feed. The present invention uses loach as transit bait, which not only cleverly caters to the mandarin fish's unique visual response mechanism for feeding, but also significantly improves the feeding efficiency during the feed conversion process, makes full use of the loach's flexible body shape and ability to swim quickly in the water, and perfectly matches the mandarin fish seedlings' extremely high desire to prey on dynamic and active small aquatic organisms, opening up a new efficient and environmentally friendly way for the feed domestication of mandarin fish seedlings. The domestication procedure is highly replicable, with low loss of mandarin fish fry, high domestication rate, few diseases, fast growth of mandarin fish fry and excellent quality.

The utility model relates to the technical field of loach breeding, in particular to a loach breeding catching cage which comprises a collecting frame, a door plate, a fixing frame and a connecting pipe. A guide part is arranged at one end of the fixing frame, the collecting frame is connected with the guide part through a connecting pipe, and the inner diameter value of the connecting pipe is smaller than that of the fixing frame and the collecting frame; placing assemblies for placing baits are arranged in the fixing frame and the connecting pipe, the door plate is rotationally connected with one end, away from the connecting pipe, of the collecting frame, and a limiting assembly for fixing the other end of the door plate is arranged on the collecting frame. According to the loach catching cage, the caught loaches are prevented from escaping from the cage again by changing the structure of the catching cage, the inner diameter value of the connecting pipe is smaller than that of the collecting frame, and therefore the loaches are difficult to escape from the connecting pipe and convenient to use.

1. Name of the designed product: fake bait (mud minnow). 2. Use of the designed product: lure for fishing. 3. Design points of the designed product: in shape. 4. Picture or photo that best shows the design points: front view.

The invention discloses a parent mandarin fish rearing and fry opening rearing method suitable for northern areas. The parent breeding method in the method comprises the steps that from the beginning of February, high-quality mandarin fish parents are selected, prenatal parents are bred in a cement pond in a greenhouse, carps are used as bait fishes, breeding is conducted to the middle ten days of April, and male fishes and female fishes with good gonad development are selected for spawning induction. The fry opening breeding method comprises the steps that mandarin fish fries swim flatly three days after going out of the film, loach water spots are fed after the mandarin fish fries swim flatly for 60-75 h, and carp fries with the body length smaller than 60% of the mandarin fish fries are fed 7 days after feeding. According to the method, water temperature fluctuation can be avoided through parent fish breeding in a greenhouse cement pond, the stability of bait supply in northern areas can be guaranteed by taking carps as bait fishes, and more than 90% of mandarin fish parent gonads are promoted to develop to the V period. Loach water spots are selected as initial feed for the mandarin fish fries, and the initial feed is matched with spawning induction, so that the method is more suitable for climate of northern areas, feed supply can be guaranteed, and the survival rate of the mandarin fish fries in the initial stage can reach 80%.

The present application relates to loach breeding feeding technology field, specifically to a kind of loach breeding equipment, including breeding net cage, the breeding net cage periphery is equipped with polyethylene mesh cloth, detachably connected with mounting plate on the top of breeding net cage, mounting plate top surface is connected with storage box by support frame, one-way rotating turnover plate is connected on the storage box, torsional spring is equipped between turnover plate and storage box, vertically connected with material guide pipe in the form of through on the mounting plate, material guide pipe upper end portion is communicated with storage box inner cavity, the material guide pipe lower end extends into breeding net cage inner cavity, the material guide pipe lower end is equipped with even distribution mechanism, quantitative feeding mechanism is equipped in the storage box, by even distribution mechanism and quantitative feeding mechanism, feed can penetrate water hyacinth or water morning glory cover layer, directly, evenly sent to water, significantly reduce the problem that feed is intercepted or floats waste by floating aquatic plants, improve feeding efficiency and loach feeding uniformity.

The invention discloses selenium-enriched loach breeding feeding equipment and relates to the technical field of loach breeding, the selenium-enriched loach breeding feeding equipment comprises a supporting frame and a storage shell arranged outside the supporting frame, a rotating shaft is rotatably mounted at the top of the storage shell, and the rotating shaft penetrates through the storage shell and extends into the storage shell; and a synchronous wheel is fixedly installed at the top end of the rotating shaft, a synchronous belt is installed on the outer surface of the synchronous wheel in a transmission mode, a distributing mechanism is installed at the bottom end of the rotating shaft, and a feeding mechanism is installed at the bottom of the outer surface of the storage shell. According to the selenium-enriched loach breeding and feeding equipment, feed is continuously pushed through the spiral blades, the problems of blockage and the like caused by feed accumulation are prevented, the feeding mechanism is matched with the distributing mechanism, the selenium-enriched feed is uniformly dispersed and fed into the breeding pond, local oversaturation or hunger in the breeding pond is effectively avoided, uniform growth of loaches is facilitated, and the breeding efficiency is improved. The breeding quality is improved.

The application discloses a loach gender-specific SNP marker and a genetic gender identification method, and belongs to the technical field of fish genetic breeding. The loach gender-specific SNP marker is screened through whole genome resequencing and GWAS analysis; the genetic gender identification method of the loach is based on designing specific primers for the SNP marker, taking loach genomic DNA as a template, and obtaining SNP typing of the individual through PCR amplification and Sanger sequencing, wherein the homozygous type is female, and the heterozygous type is male. The application can accurately identify the genetic gender of the individual, and can screen out pseudo-male fish, pseudo-female fish and the like obtained through artificial induction, and can identify the gender in the early individual development stage, and has the advantages of minimizing damage to the tested individual, not affecting survival and the like. The application has important application value in parent gender identification in the gender control breeding of the loach.

The application discloses a loach breeding net cage and a breeding method thereof, which comprises a net cage body, an anti-escape part is fixedly connected to one side of an opening of the top of the net cage body, at least one adjusting rod is arranged on each of opposite sides of the net cage body, the net cage body is movably arranged at the inner ring part of a floating bed through cooperation of the adjusting rod and a limiting part, and the floating bed is slidably arranged on a plurality of positioning rods. Through cooperation of the floating bed and the positioning rods, the net cage body can float up with the water level rising on the floating bed, so that the net cage body is prevented from being submerged and the loaches in the net cage body are prevented from escaping and causing loss of breeding cost; the lifting distance of the net cage body on the floating bed is controlled through cooperation of the adjusting rod and the limiting part; and meanwhile, through cooperation of the anti-escape part, the loaches in the net cage body are prevented from being captured by birds that prey on fish, so that the breeding effect is improved.