In the process of crab farming, aquatic plants such as Elodea, Aqueous Peanut, Vallisneria, and Hydrilla verticillata are carefully transplanted into the ponds. These plants cover approximately 50% of the pond surface. Not only do they serve as a primary food source for crabs, but they also provide essential shelter and protection. Additionally, these aquatic plants help in reducing water turbidity, improving water clarity, and lowering the temperature of the pond bottom. It is crucial to remove any decaying plant matter promptly to avoid water quality deterioration. If the plant coverage becomes insufficient, it should be replenished quickly to maintain a healthy environment.
Water quality management is especially important during the summer months when high temperatures can lead to rapid water degradation. To maintain optimal conditions, the water level should be kept at a normal depth of 1.5 meters by deepening the pond if necessary. During hot weather, it's recommended to change the water every 3 to 4 days. In cases of poor weather or sudden changes in water quality, more frequent water exchanges should be carried out, filling the pond as much as possible. If you notice an increase in crabs crawling onto the shore or observe excessive bubble production from their mouths, immediate water replacement and increased exchange are necessary. Additionally, lime should be sprinkled every 7 to 10 days at a rate of 15 kg per acre. This helps improve water clarity and increases calcium levels in the water, which is beneficial for crab development.
Feeding is a critical aspect of crab care, especially during the summer. Crabs should be fed twice daily—once in the morning and once in the evening. The total daily feeding amount should be around 10% of the crabs’ body weight. Most of the feed, about 70%, should be given in the late afternoon at around 5 p.m. It is essential to remove any uneaten bait promptly to prevent pollution. The feed must be fresh, attractive, and free from spoilage. It should be prepared in small groups or blocks to enhance its utilization and ensure better absorption by the crabs.
Disease prevention is another key factor in successful crab farming. During the hot season, crabs are more prone to various health issues. Therefore, it's important to follow a proactive approach, combining preventive measures with medication. Regular use of antibiotics like terramycin powder and furazolidone, alternating between them, can help control bacterial infections. Additionally, adding shell powder, bone meal, and fish meal to the feed supports the molting process and strengthens the crabs' exoskeletons. Maintaining good hygiene, monitoring behavior, and ensuring proper nutrition are all vital steps in keeping the crabs healthy and productive throughout the breeding cycle.
Dried Fish Fillet Snack,Line Caught Pollock Sale,Sri Lankan Dried Fish
yanbian zhenxiang foods , https://www.driedpollock.com