-
What fish and shrimp are good to farm in the Year of the Pig? Recommended farming species
In the blink of an eye, it is time to release fry again. Which aquaculture species look promising this year? According to relevant information, the American crayfish, that is, the red swamp crayfish, is an important edible shrimp species and also an important bait for fishing. The annual demand for freshwater crayfish in European and American markets is 120,000-160,000 tons, with self-supply capacity less than 30%. Vigorously developing the farming and processing of freshwater crayfish at present offers very broad prospects in the international market. In the domestic market, freshwater crayfish consumption is extremely hot; in Nanjing, Jiangsu Province alone, from June to September each year
-
Yellow Catfish Polyculture Technology: Efficient Micro-net Cage Farming Method
Setting up micro-net cages in ponds used for farming other aquatic species to raise yellow catfish is a high-yield farming method that increases water surface utilization, featuring simple operation, low investment, easy rearing, fast growth and high returns. 1 Net cage setup The net cage is sewn from polyethylene netting, 2 m long, 2 m wide and 1.2 m high, with a mesh size of 0.5-1 cm. The cage uses a closed stretcher floating-fixed type, with a 9-mesh net cloth as a cushion layer at the bottom, the cushion layer edge being 20 cm high, to reduce feed loss; the upper part of the cage rises 30 cm above the water surface
-
Key Technical Points for Integrated High-Efficiency Duck-Pig-Fish Farming
Through integrated farming, ducks, pigs, and fish can make full and rational use of energy, achieving the goals of saving feed and attaining high yield and high efficiency. The integrated high-efficiency duck-pig-fish farming method is: 1. Select superior breeds. For ducks, Cherry Valley ducks are best; for pigs, crossbred Landrace pigs and other improved breeds; for fish, mainly silver carp, bighead carp, black carp, grass carp, etc. These breeds tolerate coarse feed and grow fast. 2. Management of duck pens, pig houses, and fish ponds. Duck pens, pig houses, and fish ponds should be concentrated and conveniently located for transport to facilitate management. Keep the
-
Key points for autumn adult fish farming management
Regulating water quality. In autumn, the water temperature is suitable, making it the peak growing season for fish. Pond fish have strong metabolism and produce a lot of waste, so water quality management should be strengthened to improve the ecological environment. First, keep the pond water relatively deep to expand the water body's fish-carrying capacity, reduce the impact of the water temperature drop after autumn, and extend feeding time. Second, frequently add fresh water. Generally, add water three to four times a month, with each addition raising the water depth by 15 cm to 25 cm. Third, promptly spread quicklime. Do this once every half month, using 15 kg to 20 kg of quicklime per 667 sq m of water surface, dissolve it in water
-
The integrated fish-goose farming model can increase economic returns by 30%.
Integrated fish-goose farming is a three-dimensional ecological farming model that combines poultry rearing with fisheries management. According to comparisons, under the same conditions, integrated fish-goose farming increases economic returns by about 30% compared with raising fish or geese separately. 1. Benefits of integrated fish-goose farming. 1. Geese are fully automatic, energy-saving and highly efficient aerators for fish ponds. In integrated fish-goose farming, farmers do not need to worry about oxygen depletion in the water caused by weather changes, because whenever the weather changes, the geese will scramble to jump into the water to bathe and chase each other, churning up splashes, which has a particularly good oxygenating effect on the fish pond.
-
Three defenses to do well in winter fish farming management
In winter, the water temperature is low and there is little light, so there is less phytoplankton in the pond water of fish ponds and the oxygen-producing capacity is poor. Because fish feed and move less, their constitution is relatively weak, which has a great impact on safe overwintering and growth. To ensure the safety and growth of fish in winter, the water quality regulation and management of fish ponds in winter should focus on three defenses. Guard against shallow water. Some fish farmers believe that shallow pond water in winter is good for fish, but in fact this is a misunderstanding. In winter, when the pond water level is shallow, the water temperature changes quickly and the temperature difference is large, which will cause freeze damage to fish and is extremely unfavorable to their overwintering and growth. Winter fish ponds
-
Key Technical Points for Disease Prevention and Control in Pollution-Free Fish Farming
Symbiosis of plants and animals: When aquatic plants and fish live together in the same pond, the fish rarely get sick. The aquatic plants planted in the fish pond are rice or lotus roots, arranged in an east-west direction, with wide row spacing (greater than 33 cm), occupying no more than 50% of the total water area so that the lighting effect is good. The water depth depends on the water tolerance of the aquatic plants; for rice it is generally within 30 cm, and for lotus roots it can generally reach more than 50 cm. The farmed fish can be conventional species or famous, special and improved new varieties. The farming method can be seedling breeding or adult fish farming. Because residual bait, fish feces and so on are deposited
-
Prevention and Treatment Methods for Fish Louse Disease in Ayu Farming
Pathogen The pathogen is the fish louse. Symptoms The fish louse parasitizes the body surface and gills of ayu, sucking the blood of the ayu and causing the fish to gradually become emaciated. When feeding, the fish louse pierces the fish's skin with its mouth spines and mandibles, creating many wounds that then become infected with microorganisms, causing death. Prevention and treatment ① Before stocking, the fish pond is cleared with quicklime while still holding water, killing adult lice, larvae and egg masses in the water. ② Bathe the fish in a 30 ppm formalin dilution for 12 hours, for 3 consecutive days. ③ Use trichlorfon 0.
-
Winter pond fish farming has many benefits, and winter is the right time to farm
Guangdong Province is located in the tropical and subtropical zones, with abundant water and heat resources. Taking the Guangzhou area as an example, the annual average temperature is above 23°C, and even in the coldest month, January, the average temperature still reaches around 13°C. This natural advantage is very favorable for carrying out "winter farming" of pond fish. Practice in various places has proven that "winter farming" of pond fish has many benefits: First, when the weather is cold and the water temperature is lower, the organic matter and fertilizer in the pond decompose slowly, the pond water is fresh, and oxygen is sufficient, which is conducive to rapid growth and easy fattening of pond fish; Second, because the weather is colder, bacteria and parasites in the pond are not easy to reproduce and grow, so pond fish
-
What are the key points of adult fish farming management after the beginning of autumn
After the beginning of autumn, the water temperature begins to drop, and the fish gradually feed vigorously again. This is also a golden period for fish production and growth, so management should be strengthened. The following key points should be grasped in particular: First, strengthen bait feeding. At this time, feeding should focus on concentrated feed, with emphasis on fattening the bottom-feeding fish. At the same time, attention should be paid to the combination of varieties in concentrated, coarse and roughage feeds to ensure that the fish feed is fully and comprehensively nutritious. Grass carp should be properly fed green grass, black carp should be fed snail feed, and silver carp and bighead carp should also be properly fertilized. After the beginning of autumn, fertilizer should be applied in small amounts and frequently, mainly inorganic fertilizer, and it should also be specifically controlled according to the condition of the fish, the fertility of the water, the weather, and so on.
条件筛选