During the cold winter months, tilapia farming faces many challenges. In order to ensure the safe wintering of tilapia, detailed wintering management measures were proposed from the aspects of feeding management, water quality control and substrate management. In addition, solutions are provided for possible problems during overwintering. Here are some of the additions:
1. Preparation before wintering.
Pond preparation: Before wintering, the pond should be thoroughly cleaned, including removing weeds, pruning branches, trimming the embankment, etc., to prevent damage to the pond caused by winter wind and waves.
Equipment inspection: check the aerators, water pumps, heating equipment, etc. that need to be used during the wintering period to ensure the normal operation of the equipment.
Selection of overwintering fingerlings: Healthy, disease-free, fast-growing tilapia fingerlings are selected for overwintering to improve the survival rate of overwintering.
Can tilapia freeze to death in winter?Appropriately deepen the water level to ensure that the temperature at the bottom of the pond is stable. At the same time, during the overwintering period, in the process of adding water to the pond, the water inlet direction of the pump can be changed to spray towards the sky to prevent the fish from scratching and descaling due to the top water, which will lead to secondary water mold infection. Maintain a certain fertility and transparency of the water body, and maintain the stability of water temperature while providing sufficient dissolved oxygen. Fertile water can promote the reproduction and growth of plankton in the water, which can absorb and decompose organic matter and harmful substances, and maintain the stability of water quality and suitable water temperature. At the same time, plankton can also provide food for tilapia**.
2. Management during wintering.
Feeding management: During the overwintering period, the amount and frequency of feeding should be adjusted appropriately according to the nutritional needs of tilapia and weather changes. At the same time, pay attention to the feeding of tilapia and avoid overfeeding.
Water quality control: Regularly test water quality, including dissolved oxygen, ammonia nitrogen, hydrogen sulfide and other indicators. According to the test results, the water quality is adjusted in a timely manner to maintain the stability of the water body. 。
During the overwintering period, do a good job of parasite detection and bacteria and fungal prevention. Many clients tend to ignore the parasite test at this time, which can lead to secondary bacterial and fungal infections caused by the parasite, resulting in a large area of dead fish. At the same time, it is necessary to pay close attention to the occurrence of water mold. Once the tilapia in the pond has frostbite or bruises, it should be disinfected and sterilized with drugs such as betadine or thioetherfloxacin in time to prevent water mold infection. Hydromycosis is not uncontrollable, but it is often neglected and undetected, making it a major cause of large numbers of dead fish during wintering.
Can tilapia freeze to death in winter?Substrate management: Regularly carry out substrate improvement to prevent excessive bottom sludge and hypoxia. At the same time, pay attention to the bottom environment, find problems and deal with them in time. Pond bottom silt is not only a breeding ground for insect eggs, but also a source of harmful gases. Therefore, we need to regularly do a good job of bottoming products, decompose and oxidize sludge, maintain sufficient dissolved oxygen at the bottom, and provide a safe and good wintering environment for tilapia.
Disease prevention and control: Strengthen disease prevention and control, regularly use disinfectants and antibiotics to disinfect water bodies to prevent the occurrence of diseases.
Emergency treatment: Formulate emergency plans for emergencies that may occur during the wintering period, such as equipment failures, fish disease outbreaks, etc., to ensure that problems can be solved quickly.
Can tilapia freeze to death in winter?3. Recovery after wintering.
Pond dredging: After wintering, the pond is desilted to reduce the accumulation of organic matter at the bottom.
Fingerling screening: Screening of tilapia after wintering, retaining the well-growing, disease-free fingerlings for seeding, and culling the poorly growing or severely diseased species.
Water quality adjustment: After wintering, the feeding amount and water quality management measures should be appropriately adjusted according to the water quality of the pond to ensure the normal growth of tilapia.
Through the above measures, the survival rate of tilapia during the wintering period can be effectively improved and the risk of aquaculture can be reduced. At the same time, farmers also need to pay close attention to market dynamics and adjust their breeding strategies to achieve higher economic benefits. In short, the success of tilapia farming can only be ensured by good wintering management.
The above content is for reference only.
Author: Manager Jiang, a manufacturer of Aokdan water quality tester