First, the production of cages and set up cages with 3x3 polyethylene mesh braided mesh, using double structure sewing assembly assembly 2m, width 2m, height 1.7m square box. The outer layer has no cover net, and the mesh is 3.5cm; the inner cage is completely closed and the mesh is 3.0cm. The external cage was made of 2.6m long bamboo and used as a floater. The four corners of the cage were ligated with steel bars on the bamboo frame. At the bottom of the cage, a steel frame made of 12 mm diameter steel bars was used to form a field shape and have a side length of 1.9 m as a sinker. The upper corners of the cages each have a live opening to allow access to tank operations and aquaculture management.
The feed stand for floating feed was made of wooden boards with a side length of 80 cm and a height of 25 cm. It was fixed in the center of the cage and exposed 10 cm above the water surface to prevent the floating feed from floating out of the box. The sink feed feed platform is a layer of 40 mesh or more polyethylene net cloth at the bottom of the cage. It is folded up 30cm along the wall of the cage. The center of the cage is equipped with a funnel, 120mm in diameter and 2m in length. The plastic tube, as a feed tube, is 10 cm from the bottom of the bottom of the box and feeds the sink feed to the feed table.
Choosing the right water area and correctly setting up the cages are the preconditions for ensuring that cage culture of fish can be carried out under good conditions and obtaining ideal production effects and economic benefits. The placement of cages should be chosen so as to avoid the main stream and the main channel if the storm is small, the water flow is unimpeded, the ventilation is sunny, the traffic is convenient, and the area is conducive to safety. The cages are bundled on two thick ropes or wire ropes and arranged in a row. The ropes and cables are fixed on the big trees or cement piles at the bank ends. The distance between the tanks should be greater than 4m, and the distance between the two rows of cages should be greater than 50m to facilitate the exchange of water inside and outside the tank and ensure a good water environment in the cage culture area.
Second, before stocking fish stocking stocks, we must carefully check the cage for damage and false knots, whether the network cable is aging, and whether the structure of other parts is tight and firm. If problems are found, repair them in time. The new cages should be installed into the water 15 days before the fish species are stocked, so that a small amount of algae can be attached to the water to make it silky. This can prevent the fish species from being injured due to frictional netting after stocking.
Before the fish species are transported, they must carry out net pull-up exercises and tie-box exercises in order to adapt to catching and long-distance transportation.
Fish quality requirements are uniform, no injury, no disease, and robust body. The species size is 50g/tail--100g/tail. Fish should be disinfected before entering the box. Usually, 3%--5% salt water is used to soak the fish body for 5 minutes to 10 minutes. The stocking of fingerlings is generally in the box in winter or early spring, and the stocking density is 300 fishes per square meter.
Third, feed and feed quality feed and reasonable feeding is the key to high yields. Fish culture in cages is a high-density culture. The source of feed mainly depends on artificial feeding. A nutritious pelleted feed or floating expanded feed is used. The feed protein content should be 30%--32%. At the same time, it should be regularly fed with some green feed such as duckweed, young grass, and bitter leeks, which will not only benefit the growth of fish, but also help improve the quality of commercial fish.
Feeding must be done regularly and quantitatively. At the same time, adjust the daily feeding amount and the number of feedings according to the height of the water temperature. It is appropriate to eat within half an hour each time. In winter or early spring, due to the low water temperature, the body's feeding intensity is weak, and a small amount of sediment pellet feed can be fed. After the Ming and Qing dynasties, the water temperature rose above 15°C and was fed once a day - two times. As the water temperature increased, the amount of water fed was gradually increased from 1% of fish body weight to 3%. From late April to early July and from September to October, it is the peak season for the growth of the coloring quail in the Lancang River. The fish's feeding intensity is high, feeding 3 times -4 times a day, and the daily feeding amount is about 5% of the fish body weight. From mid-late July to the end of August, when the water temperature exceeds 30°C, the fish's feeding intensity declines, feeding twice a day, and the daily feeding amount is 3% of the fish body weight. After November, when the water temperature drops and the growth rate of the fish body slows down, the feeding amount should be gradually reduced. At the same time, attention should be paid to changes in water quality, heavy rain, floods, or long days of sunny days, deterioration of water quality, and low feeding of low dissolved oxygen.
Fourth, the daily management of fish into the box, we must carefully manage. The daily management needs to do three tasks: First, check the network, pay special attention to check whether the cage is damaged, and often clean the cage; second is the industrious tank, we must carefully observe the fish's food intake, growth, and do a good job Records, the third is to prevent disease, to regularly check the fish, timely prevention and treatment of fish disease. The prevention of fish diseases is mainly prevention. After the fish is put into the box, it is used twice a month to take a bag of bleaching powder twice a month, twice a month - three times with a strong disinfectant according to the instructions to form an aqueous solution around the cage; It is necessary to apply drugs in a timely manner. If you find dead fish, remove them in time.
If properly reared and managed, after 7 months to 10 months of breeding, adult fish can be put out of the box on the market, at this time, each box of commercial fish can reach about 750kg, and can obtain significant economic benefits.
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In the Arbas region of 105° east longitude and 40° north latitude where the temperature fluctuation between day and night can reach 50 degrees in winter, there is an essential native goat breed, the purebred Arbas Baby Cashmere Goat, which features thin and soft hair, a pair of horns and pink ears. Arbas Baby Cashmere Goat looks small yet are the nobles of goats.
The famous Arbas Baby Cashmere Goat, as a rare breed living in the Ordos Plateau of Inner Mongolia, is concentrated in Otog Banner, Otog Front Banner and Hanggin Banner in the western part of the Plateau. Sumu, Arbas, Otog Banner is the primary production area of Arbas Baby Cashmere Goat for its favorable natural environment, with Arbas Mountain in the west, vast natural pasture in the center and desert steppe in the south. The semi-arid steppe climate provides excellent conditions for animal husbandry.
Due to its location in the desert steppe, the area is dry and windy with little rainfall and much sand. The temperature difference between day and night is extremely high, and the annual average temperature is 6.4 °C. In the long, cold and dry winter, the lowest temperature reaches -30°C to -40°C late at night, while in the short, hot and arid summer, the highest temperature is 36.4°C and the lowest -32°C, with annual precipitation between 200mm to 400mm. The adorable, lovely and lively Arbas Baby Cashmere Goat grows in such extremely harsh conditions, thus can produce rare and quality cashmere.
Arbas Baby Cashmere Goat`s two coats are pure white. The top layer or outer coat is bright and coarse guard hair to protect the undercoat that is softer and finer down. The quality of the cashmere fleece is determined by three indicators: the diameter, length, and density of cashmere fibers. Due to its unique genes, Arbas Baby Cashmere Goat has a superiority that can never be duplicated. Its secondary hair follicle is smaller than those of other goats, and its cashmere has an average diameter between 13μm to 15 μm. It can even produce cashmere with a perfect diameter of 14.5μm, with a pure cashmere content of over 55%, which is unique worldwide. The preciousness of cashmere results from the small amount of production of each goat. Therefore, Inner Mongolian Arbas Baby Cashmere Goat was officially named by the People`s Government of Autonomous Region in 1988 and was listed on the National Register for the Conservation of Animal Genetic Resources as Class-1 protected breed by the Ministry of Agriculture in 2001.
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