Key Points for May Crayfish Farming Management

Key Points for May Crayfish Farming Management

As May approaches, the water temperature begins to rise rapidly, leading to increased feeding activity among crayfish. Coupled with factors such as pond bottom environment and aging water plants, various problems can easily occur. So, what are the key points for farming management during this period? Let's find out.

image.png

Key Points for May Crayfish Farming Management

  1. Cooling Treatment: The ideal water temperature for crayfish is between 15-28°C. Therefore, after the temperature rises in May, it is advisable to deepen the water level appropriately to slow down the rate of temperature increase. Planting emergent and floating plants can also provide shade and help in cooling.

  2. Bottom Improvement: Timely bottom improvement involves decomposing organic matter at the bottom of the pond to optimize the pond bottom environment. To prevent "May plague," it is recommended to use "bacterial toxin clear + double oxygen bottom clean granules" every 10 days for better bottom improvement.

  3. Adding Freshwater: Add fresh water once a week to regulate the water level and improve water quality. Each time, add 1/5 of the pond volume, or add water once a day for about 2 hours (calculated per 40 mu). Water should be added between 8-14 o'clock every day.

  4. Algae Management: When algae appear in small amounts, they can be manually removed or water transparency can be reduced to inhibit algae growth. When algae appear in large amounts, algaecides can be used for eradication, but care should be taken to avoid crayfish molting periods.

  5. Aquatic Plant Care: Aquatic plants are not tolerant to high temperatures. It is recommended to trim the grass heads in late April or early May to prevent them from growing above the water surface.

  6. Oxygenation: Remove dead crayfish and rotten grass in a timely manner to prevent the production of harmful substances in the water and oxygen consumption. Regularly operate aerators or use slow-release oxygen products to promote healthy crayfish growth.

  7. Shell Molting Management: When a large number of crayfish molt, the calcium in the water is not sufficient to meet the demand for crayfish shells. Therefore, supplemental calcium is recommended during molting periods. It is suggested to use ionized calcium at a concentration of 0.5% mixed with feed, or directly spray the water with biological agents containing calcium, phosphorus, and other nutrients.

image.png

In summary, May is a critical period for crayfish farming. To avoid the impact of "May plague," it is essential to maintain water plants, water quality, and conduct regular bottom improvement and health care, which will facilitate the normal growth of crayfish.

Leave a Reply

Your email address will not be published. Required fields are marked *