As Chinese sturgeon has a greater value in food and medicinal use, artificial breeding has been widely carried out throughout the country. Artificial breeding and breeding are carried out. The breeding methods include polyculture of fish gizzards, monoculture of ponds, and greenhouse cultivation of factories. In the artificial rearing environment, Chinese sturgeon eats slaughterhouse animal wastes, cocoons, insects and other animal foods, but also eats fruits, vegetables, and synthetic hard grain foods. By providing a rich diet and maintaining a suitable growth temperature so that the Chinese sturgeon does not enter hibernation, as well as scientific and industrialized rearing, the reproduction rate and hatching rate of the Chinese sturgeon are greatly improved, and the larvae can weigh up to 500 after more than one year of growth. Around the same time, the natural resources of Chinese sturgeon can be well protected and utilized. With the improvement of people’s living standards, the demand for Chinese sturgeon at domestic and foreign markets is increasing. Accelerating the artificial propagation and breeding of Chinese sturgeon has become an inevitable trend.
The breeding grounds are generally selected in places where the water source is near, the water quality is clean, there is no pollution, the water quantity is sufficient, and the water intake and drainage are convenient. Water sources are generally rivers, lakes or surface waters of reservoirs and ponds. The most ideal source of water is both surface water and good-quality factory waste water or hot spring water, so that the water temperature can be freely adjusted. The subsoil is preferably a loam or clay with good water retention and poor permeability. The subsoil is topped with a 15-30 cm thick mixture of silt and fine sand in order to facilitate the habitat and hibernation of Chinese sturgeon. However, sand should be fine and should not be thick, otherwise it is easy to cause skin damage and infection of Chinese sturgeon. Acidic soil or saline-alkali soil is not suitable for the establishment of eel ponds. Dianchi Lake should be built in a place with good light, a quiet environment and a sunny place. In addition, it depends on whether transportation is convenient, and whether there is sufficient supply of power, energy and feed.
The growth and development of Chinese sturgeon can generally be divided into three stages: juvenile cockroach, juvenile cockroach and adult cockroach, and these three stages have different requirements for culture environment. According to their weight, freshly hatched are juveniles; 11-50 grams are cubs; 51-200 grams are pods; 200 grams are nymphs; 750-1000 grams are kin. Due to the different growth rates of Chinese sturgeon and the habit of disability, it is advisable to keep the Chinese sturgeons in different stages of growth and in different sizes and keep them separately. It is necessary to construct the inbreeding area, the juvenile pool, the juvenile pool and the breeding pond separately. , into a pond. A complete breeding farm, in addition to the above-mentioned five types of ponds, should also have egg production rooms, reservoirs, disease isolation tanks; warehouses, processing rooms, pump rooms, power distribution rooms and so on. The proportions of the specifications for the areas of the intimacy ponds, the larvae pools, the larvae pools, the grazing ponds and the grazing ponds of the open-air pond quail farms shall be 4:1:2:4:5.
Juveniles have higher requirements for feed, requiring fine, fine, soft, fresh, tender feed, complete nutrition, and good palatability. Usually within one month after hatching, they are fed with red worms, small clams, silkworms, and chironomid larvae. They can also feed chickens, duck yolks, animal livers, etc., and gradually change to fly larvae, cockroaches and larvae. Shrimp, as well as minced fish gizzards, animal organs, large fish, shrimps, river clams, snails, etc. Feeding requirements for young puppies are not as stringent as those for juveniles, but due to strong ingestion abilities, the requirements are relatively large. In addition to high protein animal feeds, they should be mixed with the same amount of fresh fish or The spleen and organs of the pig should be properly added with a certain amount of vegetable juice; the feed should be agitated into sticky, elastic and stretch pellet feed. The young pups are fed 2 to 3 times a day, usually from 8 to 9 am, and from 1 to 3 p.m., the daily feeding amount is about 5% to 10% of carcass weight. Fixed feed table. At the same time, it is necessary to control the water temperature, water quality, and water level, prevent the maintenance of diseases and escape prevention facilities, and keep records of feeding conditions.
The breeding process of Chengyu generally starts from breeding stock of about 100 grams, and it can be sold up to 500 grams or more. This process is mainly completed outdoors, and conditions are available for industrial conservation. The stocking density differs depending on the specifications of the earthworms. It should be noted that it should be based on the size of quail, grading and raising, to avoid mutual biting, affecting growth; when the greenhouse is moved into the open pond, the water temperature difference between the two is adjusted to no more than 3 °C, otherwise it is easy to make Chinese quail disease . The Chinese sturgeon weighs 100 grams and stocks 3 to 5 eggs per square metre. For a weigh of 200 grams, it stocks 2 to 3 eggs per square metre. The feed method, quantity, frequency, and type of clams are basically the same as those of puppies. The use of compound feed in the breeding process is more effective than the use of various individual feeds. In the growth temperature period. The following formulas can be used: fish meal (or silkworm meal, blood meal, etc.) 30%, bean dregs 30%, malt 3%, wheat flour 30%, earth powder 3%, plus 1% of vegetable oil, bone meal, lotus root meal, and vitamin 0.1%.
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