Autumn is a suitable season for the growth of fish. In particular, the weight gain of grass carp is relatively obvious. The management of feeding during this period is about 30% more than normal management.
The first is to adjust the water quality in time and increase the dissolved oxygen in the water. After a large number of feedings in summer, the water quality of aquaculture water becomes fat and harmful gases are enriched, and the water quality is no longer suitable for fish survival. At this time, water quality adjustment must be carried out. The first step is to add new water, usually adding fresh water once a week, adding 5% to 10% of the total amount of the pool is appropriate; followed by aerators to stir water at noon on sunny days to aerate and aerate the water body. Finally, the whole pool is splashed with quicklime, and the water depth is 1 meter every half a mu every half a month. The whole pool is evenly splashed with 15-20 kg of slurry of quicklime, and the water body is disinfected and sterilized while adding calcium.
The second is to feed enough green material to supplement fine material in time. In autumn, the temperature has dropped significantly, but the food intake of fish has not decreased significantly. In this period, we should adhere to the principle of “Four Sets†to feed fresh, green and non-polluting green feed, and increase the amount of concentrate feed, such as compound feed, in time. Ensure the fish is full.
The third is the patrol pond, a detailed observation, anti-floating head. For fish ponds with large intensive culture densities, the amount of organic matter in the water is increased due to large amount of feeding, and the oxygen consumption factor is increased. After entering the autumn, the fish activities are frequent and they are still susceptible to lack of oxygen. Therefore, every day, in the afternoon, and especially in the evening, it is necessary to observe the ponds and observe them carefully to prevent flooding.
Fourth, timely prevention and treatment of diseases. After the autumn, the fish eaten violently, and prone to enteroenteritis and gill disease. In addition to the prevention of gushing of topical drugs every half of the day, it is necessary to feed the bait 2 or 3 times. In addition, it is necessary to remove the slag from the pond in time and feed the fish without deterioration.
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