Sturgeon is a large and medium-sized economic fish and a valuable species. The age of first sexual maturity: males 11-9 years old, females 11-13 years old, spawning cycle 4-6 years. Here is the method of sturgeon rearing that I have carefully organized for you, take a look.

1, pond conditions: ponds should have a good intake and drainage system, the area of the fish pond to 3-5 acres is appropriate, the shape of the rectangle is good. The silt at the bottom of the pond is less than 10 centimeters. If it is a cement flow pond with an area of 50-300 meters is not limited. The depth of the pool is 2 meters.

2, the requirements of the water quality: dissolved oxygen requirements greater than 5 mg / liter, PH value of 6.5 to 8.0. It should be noted that the sturgeon is particularly sensitive to chlorine, even if there is a trace of chlorine ions in the water will lead to sturgeon death.

3, fish stocking: ponds before stocking lime disinfection, about 10 kilograms per mu, and then dry pond sun. Two weeks before the stocking of water injection, water depth of 2 meters. Sturgeon stocking density and its individual size, general specifications in 300-500 grams, 500 per mu. Sturgeon bearing water temperature of 1-30 ℃, the production of commercial sturgeon optimal water temperature of 20-24 ℃, fall and winter water temperature is best not less than 4-6 ℃, summer pond water temperature of more than 26 ℃, should be timely injection of new water.

4, feeding management: the implementation of regular, fixed-point, quantitative feeding principle, the daily bait rate of 3%, and later as the fish grow larger, gradually reduce the bait rate, when the fish reached more than 1 kilogram, the daily bait rate of no more than 1%. Since sturgeon are afraid of light, the feeding time is once a day at dawn and once a day at dusk. Every half a month, feed fish health 2, freshwater fish multi-vitamin and enzyme preparations, etc., in order to improve the sturgeon's stress resistance and immunity, accelerate the growth of sturgeon.

Sturgeon are large individuals with a long lifespan and late sexual maturity. Most sturgeon in the natural environment of the age of sexual maturity for more than 10 years, the male is 3-4 years earlier than the female maturity. Sturgeon age of maturity is generally 9-10 years for females and 7-8 years for males.

Sturgeon spawning ground requirements are very strict, they are in the natural environment, sometimes thousands of kilometers back to the river to find suitable spawning grounds, if the female migration to the spawning grounds of the road is cut off by the dam, can not find a suitable spawning environment, the follicles of the female fish will be degraded and absorbed.

Because of the big difference between the artificial culture conditions and the natural environment, sturgeon to reach gonadal maturity under artificial culture conditions should use artificial regulation of temperature, light, water flow and other environmental factors, with physiological induction and other technologies to achieve gonadal maturity. Under artificial culture conditions, the sturgeon can be fed with artificial pellet feed.

The bearable water temperature is 1?30 ℃, the optimal water temperature for the production of commercial sturgeon is 20?24 ℃, and the water temperature in the fall and winter is preferably not lower than 4?6 ℃. Requirements for water quality: dissolved oxygen is required to be greater than 5 mg / liter, PH value between 6?5 and 8?0.

The sturgeon's oxygen consumption rate belongs to the compliant type, that is, when the water environment has high dissolved oxygen, its oxygen consumption rate is also high; with the decline of dissolved oxygen in the water, its oxygen consumption rate is also decreased.

Sturgeon oxygen consumption rate and asphyxiation point are higher than conventional aquaculture fish, second only to salmon trout, which puts high demands on the aquaculture water environment, the general dissolved oxygen in the water should be maintained at 6-8 mg / liter to ensure smooth growth.

Sturgeon are slow to respond to external influences. In addition to swimming along the walls and bottom of the pool in the breeding, rarely do strenuous activities, consume very little energy in the movement, so the feed coefficient in the feeding process is relatively low.

Sturgeon have strong food inertia and refuse to eat unfamiliar food. If you start with daphnia and water worms, there is a certain amount of domestication time when switching to a complementary diet.

In the breeding to open at the right time, in the yolk sac has not been absorbed in the mixed nutrient stage, timely feeding of palatable open bait is the key to improve the survival rate of the fry, this period of the fry for passive feeding, so the requirements of the water to ensure that a certain amount of bait density, so as to have a high survival rate.

Sturgeon growth rate is relatively fast, usually hatched splash, after about 1 month of breeding can reach 7-10 cm. Under the right conditions, 100-150 grams of fish stocked in the early spring of that year can be cultured into 0.75-1 kg of commercial fish after 9-10 months.