Sturgeon culture method

Sturgeon are mainly cultured in reservoirs, lakes and rivers, and are generally released in spring and winter, and the cage is most commonly used by breeders to raise Sturgeon, and the size of the cage is determined according to the scale of the culture. Full-granular feed should be selected for stocking Sturgeon. Cage needs special care, timely observation of air temperature, water temperature and other changes, so as to ensure the safe growth of Sturgeon.

Sturgeon is generally cultured in reservoirs, lakes and rivers with large water area. Sturgeon is suitable for growing in waters where the water surface is wide and micro-flow, the water quality is pollution-free and the water depth is more than 5 meters. Sturgeon has the characteristics of fast growth, short culture cycle, strong adaptability and high economic benefits, so there are many breeders.

Water area and cage selection

At present, the breeding of Sturgeon is mainly in cages, which are generally double-layer, mostly made of polyethylene or polyvinyl chloride mesh. The specifications of the cages depend on the scale of the farmers. The length, width and height are usually 10 meters × 4 meters × 4 meters, 6 meters × 4 meters × 4 meters and so on. The mesh is determined according to the size of the fish, and the fish will not run away. In order to ensure the quality of the water body, Sturgeon with a tail weight of 30g to 50g is generally placed, and the mesh size of the Sturgeon is about 1.5cm. The bottom of the cage should be sewn with silk yarn to avoid feed loss.

The cage is generally frame floating, which can rise and fall freely according to the fluctuation of water temperature. The cage should be put into the pond before breeding Sturgeon to let the algae grow, which is to prevent the fish from losing their body when they enter. Sturgeon should be cultured in waters with a wide water area, a water depth of more than 5 meters and no pollution. In this way, Sturgeon can achieve the highest yield and provide higher economic benefits for farmers.

Rational stocking

Sturgeon is generally suitable for stocking in spring and winter, and the species must be physically healthy, injury-free and disease-free, with uniform specifications. Generally, the density of each square meter cage is about 80 fish with a weight of about 40g, and the fish is washed with salt water to ensure that the fish is clean and pollution-free.

Scientific input.

The whole pellet feed should be selected for Sturgeon feed. Feed should meet the following standards: the content of protein should reach about 40%, of which the content of animal protein should be more than 15%, the content of fat should be more than 9%, and the content of carbohydrate should be about 30%. It is also necessary to have the right amount of vitamins, minerals, cellulose and so on. Feed feeding according to the situation of fish mouth crack, it is better to feed 1 gamma 2.

Fish species in the cage within 2 days do not feed, let it adapt to the cage environment. Feeding was carried out after 2 days, and the daily feeding volume was about 6 times. Enter the normal feeding stage, feed 3 times a day, the time is early, middle and late respectively, adhere to the principle of a small number of times, to ensure that each fish can eat feed, and rapid growth. Feeding should also be reasonably adjusted according to the weather, water temperature, changes of dissolved oxygen and the feeding of fish, and fed scientifically.

Strengthen management

Cages need to be equipped with special personnel for care, adhere to several times a day patrol boxes, and make a good air temperature, water temperature, feeding and other daily records. Carefully observe the daily activity and growth of Sturgeon, when the difference in individual size is obvious, it should be cultured in boxes in time to avoid polarization due to different fish sizes.

The safety of the cage should be paid attention to in time, strictly prevent the wind and waves, sediment sundries sink the cage, the bottom of the box should be checked frequently, in order to prevent the hole and make the fish escape. Wash the cage regularly, usually once every 10 days or so. In case of flood, wash the cage immediately to avoid virus infection.

In the case of dead fish, it should be fished out immediately to prevent pollution and cross-infection. Sterilize the fish with lime every 20 days or so to ensure that the fish grow in a safe and pollution-free environment.