The ponds were specifically managed for the summer and autumn seasons. Summer stocking typically began in March or April, with the primary species being overwintering shrimp. The shrimp size ranged from 1,000 to 3,000 individuals per kilogram, and approximately 15,000 to 20,000 shrimp were stocked per acre. In contrast, fall stocking usually took place between June and July. During this period, the shrimp were generally larger, with a size range of 2,000 to 5,000 individuals per kilogram, and stocking density was around 34,000 to 40,000 per mu. The ponds were often mixed with fresh shrimp, focusing on shrimp farming, with 150,000 to 200,000 larvae stocked per acre. Regardless of the method used, the average shrimp yield per mu could reach 50 to 100 kilograms.
When stocking shrimp, several important factors should be considered:
1. Shrimp placed in the same pond must be uniform in size, healthy, disease-free, and free from injuries. They should have all their limbs intact and one leg per individual.
2. It is best to stock shrimp on rainy days or during the early morning or late evening on sunny days to avoid direct sunlight and high temperatures, which can reduce survival rates.
3. When handling shrimp during stocking, it's important to work gently in the water and avoid stacking them in containers, as this can cause stress and damage.
Additionally, maintaining good water quality is essential throughout the growing season. Regular monitoring of temperature, pH levels, and dissolved oxygen ensures a healthy environment for the shrimp. Farmers should also be cautious about introducing new shrimp into the pond to prevent the spread of diseases. Proper feeding practices, including the use of high-quality feed and appropriate feeding schedules, are crucial for maximizing growth and yield. By following these guidelines, farmers can significantly improve the success of their shrimp farming operations.
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