Tilapia is a tropical fish with extremely poor cold resistance. It gradually dies when the water temperature drops below 14°C. Therefore, the overwintering management of tilapia is extremely important. To comprehend the experience of farmers in China, we should pay attention to the following four points:
First, specifications should be neat. Tilapia reproduces several times a year, and the specifications of the fish when it enters the pool are not uniform, and it is inevitable that there will be small bullies on the food and the young will be stunted or even die. Therefore, when the fish species enter the pool, they must be screened, and enter the pool according to the size and size, so as to manage and increase the survival rate.
Second, the temperature should be controlled. Temperature is the key to wintering conservation of tilapia. It is necessary to adjust the temperature of each period according to the seasonal climate. The general water temperature is controlled from 20 to 23°C from September to October. From November to February, the water temperature is controlled at 19 to 20. Between °C, but care should be taken to minimize the temperature difference. Each water temperature is preferably increased by only 4 to 5°C above the temperature of the fish pond.
Third, the bait should be diversified. Long tilapia winter, if the bait long-term single, often results in lack of vitamins in fish, affecting physical and development, can be in different stages, respectively, according to different proportions of bran, peanut cake, fish meal, corn, carrots, cabbage and other processing Puffed feeds are fed. The processed bait should be promptly dried in order to avoid deterioration.
Fourth, fish disease should be prevented and treated as soon as possible. After entering the pond, the seedlings should be based on the habit of tilapia, first grasp the water circulation, generally exchange one-third of the living water every day, and conduct bleaching powder disinfection on the pond once a week. Treat the sick fish promptly and find that the dead fish in the pond need to be properly removed.
First, specifications should be neat. Tilapia reproduces several times a year, and the specifications of the fish when it enters the pool are not uniform, and it is inevitable that there will be small bullies on the food and the young will be stunted or even die. Therefore, when the fish species enter the pool, they must be screened, and enter the pool according to the size and size, so as to manage and increase the survival rate.
Second, the temperature should be controlled. Temperature is the key to wintering conservation of tilapia. It is necessary to adjust the temperature of each period according to the seasonal climate. The general water temperature is controlled from 20 to 23°C from September to October. From November to February, the water temperature is controlled at 19 to 20. Between °C, but care should be taken to minimize the temperature difference. Each water temperature is preferably increased by only 4 to 5°C above the temperature of the fish pond.
Third, the bait should be diversified. Long tilapia winter, if the bait long-term single, often results in lack of vitamins in fish, affecting physical and development, can be in different stages, respectively, according to different proportions of bran, peanut cake, fish meal, corn, carrots, cabbage and other processing Puffed feeds are fed. The processed bait should be promptly dried in order to avoid deterioration.
Fourth, fish disease should be prevented and treated as soon as possible. After entering the pond, the seedlings should be based on the habit of tilapia, first grasp the water circulation, generally exchange one-third of the living water every day, and conduct bleaching powder disinfection on the pond once a week. Treat the sick fish promptly and find that the dead fish in the pond need to be properly removed.
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