July is the month with the highest temperature and water temperature in the year. Fishes have entered a period of rapid growth and pond management has reached a critical period.
Every summer, some farmed fishes are affected by high temperatures. Feeding takes a moment to stay away from the food market, causing fish to grow slowly from the station. Even the phenomenon of “not eating light†occurs. This is what people often call “fried Taiwanâ€. In particular, it has a great influence on the growth of carp. Therefore, in the summer, only by scientific feeding can we avoid the phenomenon of “fried Taiwanâ€.
1, properly raise the water level. Increase the amount of water stored in ponds and increase the buffer capacity of pond waters against high temperatures.
2. Set a shade net in the feeding area, add a surge or waterwheel type aerator, stir the water in the feeding area to reduce the surface temperature.
3, change the feeding time. One day, the first feeding was 30 minutes ahead of schedule, and the last feeding was postponed by 30 minutes.
4, reasonable control of feeding amount. Usually from 2 to 5 o'clock in the afternoon, due to the high dissolved oxygen in the water, the food intake of fish is also the largest. During the high temperature period, the feeding amount can be appropriately reduced at 2 o'clock in the afternoon, especially when the phenomenon of “fried Taiwan†appears in the fish school. After the food is eaten, the “fried table†spreads out. When the food is gathered again after more than 10 minutes, do not let the fish passively ingest food. , you can reduce or stop feeding.
5, adjust the feed product grade. When the water temperature exceeds 35°C, the fish's ability to absorb and utilize nutrients in the feed decreases. At this time, the fed bait can reduce one nutrient grade, reduce feed nutrient waste, and save costs.
6, high temperature feed storage. During the hot season, the air is hot and humid, and many ponds and fodder warehouses are simple and the feed is susceptible to moisture deterioration. Therefore, the feed inventory time during high temperature should not exceed 10 days.
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