Grass carp farming technology 20, grass carp farming technology

Rural fish farming techniques are as follows:

1. Site selection: the pond is the place where the fish live, the advantages and disadvantages of the pond conditions have a direct impact on the yield of the fish, and the principle must be grasped when choosing the construction of the pond is to choose the geographical location is wide, flat, the water source is sufficient and pollution-free fields, mountain fields; The water in the pond is convenient for drainage and irrigation, not easy to flood, and at the same time, it should be in a convenient location with good sunlight, transportation, and power supply.

2. Planning: Pond construction, planning should go first, the selected fields and mountain fields should be planned in a unified manner, and the location of roads, ponds, pig pens, duck houses, goose houses, biogas digesters and staff living places should be planned. Road construction must surround the pond, on the one hand, to facilitate infrastructure construction, such as transporting bricks, erecting poles, erecting wires, etc.; Second, it is convenient for putting fish feed, patrolling at night, observing the movement of fish and fishing vehicles.

Reasonable planning of roads, pig pens, ponds, etc., for the convenience of feeding fish, pig manure can be discharged into the pond.

Grass carp is one of the common freshwater fish in China, and the key points of its breeding technology are as follows:1Water Quality Control:

Grass carp has strong adaptability, but the water quality has a great impact on its growth and reproduction, so it is necessary to monitor and control the water quality to ensure that the water quality is clean, transparent, and has sufficient oxygen content. 2.Feed Management:

The grass bucket fish is an omnivorous fish, which can be fed artificial or natural feed, but the type, quantity and frequency of feed need to be controlled to prevent overfeeding and eutrophication of the water body. 3.Disease prevention and control:

Grass carp is susceptible to diseases, and disease prevention and control measures need to be strengthened, such as strengthening water quality monitoring, regular water change, and controlling feed types. 4.Temperature Management:

Grass carp has a wide range of adaptation, but the temperature also has a certain impact on its growth and reproduction, so it is necessary to keep the water temperature suitable. 5.Breeding environment:

Grass carp also has certain requirements for environmental factors such as light and water flow, and the breeding environment needs to be reasonably set according to its habits and growth stage.

1. Environment and pond selection.

Grass carp is the most susceptible to disease, and there should be a special breeding base for breeding pollution-free grass carp, and form a certain scale, and there is no pollution source around the base. The breeding base should have sufficient water sources, good water quality, smooth inlet and drainage, fish ponds are not connected to each other, convenient transportation of fish, rich feed resources, and good ecological and environmental conditions.

2. Fish species selection.

If you want to raise grass carp well, you must choose healthy and lively high-quality fish species, the parents of self-breeding and self-breeding fish species should be in the qualified national recognized raw material farm, the fry are cultivated without pollution, the quality meets the relevant standards, and the quality meets the relevant standards, with excellent traits, and the conditions are the best self-breeding and self-breeding, such as the introduction of fish fingerlings from other places must be quarantined before they can be introduced.

3. Disinfection of fish fingerlings.

Fingerlings must be sterilized before being put in, and can be soaked and disinfected with 20-40 milligrams of chlorine dioxide every 5-10 minutes, 1-3 milligrams of salt every 5-20 minutes, 8 milligrams of milligrams every 15-30 minutes, and 10-20 milligrams of potassium permanganate every 15-30 minutes. The stocking ratio is 80 20 stocking mode to put fingerlings, that is, the main grass carp accounts for 80, and the fish with fish accounts for 20 in the spring.

4. Scientific bait.

Grass carp mainly feeds on aquatic weeds in natural waters, and in pond pollution-resistant aquaculture, it is suitable to use pellet feed with scientific ratio to reduce the pollution of water quality by residual bait and fully improve the utilization rate of bait. With the water and dry grass fed, it should be tender, fresh and palatable. Cake and other types of bait should be mildew-free, non-polluting, non-toxic, and after crushing, soaking, cooking and other methods, it should be made into bait that is easy to eat and easy to digest.

Feeding bait should adhere to the principle of timing, positioning, qualitative and quantitative bait, and determine a reasonable feeding amount by observing the weather, water conditions and the amount of food eaten by the fish.

5. Feed fishery medicine reasonably.

Fishery medicine is used to prevent and improve aquatic animal and plant diseases and pests, if used improperly, it is easy to remain in the body of the fish, resulting in the quality of the fish is not qualified, so it should be used with caution. Fishery drugs generally include fungicides, insecticides, water quality improvers, etc., at present some traditional fishery drugs have been banned, such as chloramphenicol, furazolidone, sodium pentachlorophenol, malachite locust crack, sulfathiazole, tylosin and other 32 kinds of fishery drugs, can not be used in aquaculture, special attention should be paid to the selection of fishery drugs.