What Are the Precautions for Sturgeon Farming? A Detailed Explanation
Sturgeon is a fish belonging to the order Acipenseriformes. The sturgeon mentioned here is not the nationally protected Chinese sturgeon, but the ordinary common sturgeon. After reaching adulthood, sturgeon grow very large, generally reaching a body weight of 68-250kg. So what are the precautions for farming sturgeon?
1. Pond Conditions
Because sturgeon grow very large after reaching adulthood, the pond area required for farming sturgeon also needs to be relatively large. The pond needs to have relatively deep water to ensure an adequate water source, and the water quality should be clean, clear and free of pollution. The pond should be kept as far as possible from residential areas, factories, traffic arteries and other noisy places, but transportation and communication should also be convenient. Generally, the pond area is determined by the number of fish being farmed, but it is usually around 5-10 mu, with the water level generally around 3 m, to ensure stable water quality and a relatively high dissolved oxygen level in the water. Set up independent water inlets and aeration equipment to prevent oxygen deficiency in the pond.
2. Pond Clearing and Disinfection
15 days before releasing the fry, fill the pond with water to a depth of about 20cm, mix quicklime with water and splash it over the whole pond to thoroughly disinfect the pond and eliminate toxic substances in the water. Then soak the pond for about three days and drain the pond water, then soak the pond bottom with water again. Use fine mesh silk at the water inlet and outlet to filter the water, then use tea seed cake to clear and disinfect the pond. Before disinfection, first crush the tea seed cake and soak it in water for 24 hours, then splash it over the whole pond. This can not only kill the fish and shrimp in the pond, but the remaining tea seed meal can also be used as fertilizer. Ten days before releasing the fry, deepen the pond water to about 80cm and disinfect with a chlorine-containing disinfectant.
3. Fry Stocking
When stocking fry, choose healthy sturgeon fry free of disease, preferably above 20cm. The stocking density is generally 500 fish per mu. When stocking, consider whether the water temperature is suitable, and also consider the time for sturgeon to reach market size after adulthood. If the fry need to be transported, feeding of the fry should be stopped about 2 days before transport. Before releasing the fry, first test the water by placing sturgeon fry of the same size in a net cage, then observe their growth and activity. If there are no abnormalities, they can be stocked, but the fry need to be placed in bags and then put into the pond so they can adapt to the pond water temperature.
4. Daily Management
Frequently observe the growth of the sturgeon in the pond, at least three times a day in the morning, noon and evening, with special attention to inspections at night and in the early morning. Pay attention to the activity of each fish to prevent oxygen deficiency. In summer, because it is a rainy season and the air pressure is relatively low, pond patrols should be strengthened, and any problems found should be dealt with promptly. For example, if there is oxygen deficiency, use an aerator to aerate the pond, or add and change new water, to prevent the phenomenon of pond turnover. Regularly check the growth and health of the sturgeon, and appropriately adjust the feeding amount and density.
The above are Tuliu.com's precautions for farming sturgeon. Sturgeon has relatively high economic value, and the methods for farming sturgeon are also relatively simple, but what needs attention is disease prevention. Sturgeon diseases are relatively difficult to detect, and correct management methods are needed.