Culture methods of overwintering tilapia

Tilapia is a kind of freshwater fish with good sales at present, and it is also very simple in peacetime breeding. It does not need farmers to worry too much, as long as they are fed regularly and quantitatively every day and change water in time. However, it is necessary to strengthen the feeding and management in winter, otherwise a large number of tilapia will die, because the temperature in winter is relatively cold, which is not suitable for tilapia growth. So many farmers are particularly worried when it is almost winter, and some even salvage small pieces of tilapia to reduce losses, so today's pro-farm network will teach you how to raise tilapia in winter.

1. Appropriate amount of feeding

In winter, the physique of tilapia will decline, and the immunity is very poor, especially the cold resistance of tilapia is very weak, so we should feed the tilapia with the right amount of food when it is about to enter the winter. At least let it have a better body before overwintering, which can improve the cold resistance to a certain extent. During this period of time, we mainly feed nutritious feed. Tilapia will eat less after winter, and we usually feed them only when the weather is fine, so that they can eat a little more to maintain their strength and survive the winter.

2. Water quality regulation

We all know that in normal breeding, the tax in the pond should not be too high, usually about one to two meters, but in winter we need to raise the water level appropriately, so as to ensure that the water temperature at the bottom of the pond is about 18 degrees Celsius. In this way, tilapia will not freeze to death, and the second is to apply appropriate amount of fertilizer to the pond, which can ensure the fertility of the pool and the amount of plankton in the pond. At the end of winter, there will be a large number of parasites and bacteria in the pond, so we need to sterilize and kill insects in the pond in order to prevent bacterial infection in time. If tilapia is found to die, we need to take timely measures to replace the water in the pond, re-inject new water, and then heat preservation treatment.

3. Thermal insulation management

The most important thing for tilapia in winter is to keep warm. In general, we drill a well next to the pool. We all know that the water in the well is warm in winter and cool in summer, so it is very helpful for tilapia culture. During the overwintering, we can inject the water from the well into the pond, which can increase the temperature of the pond water to a certain extent. The second is to build wind walls around the pond to prevent the effect of wind on the water temperature at the bottom of the pond. The third is that we can build scaffolding and use relatively transparent plastic film, which can also reduce the infection of bacteria, kill two birds with one stone, and finally plant some phytoplankton in the pond. this can purify the water quality and maintain the water temperature to a certain extent.

4. Bait feeding

Of course, since the cold resistance of tilapia is weak, the audit function will be weakened in winter, so we can feed some baits to strengthen our physique in our usual feeding, which can improve the forehead and physique of tilapia to a certain extent. at least it won't freeze to death so quickly in winter, so we usually feed it after mixing with Chinese herbal medicine and feed for about four or five days. It's basically no big deal.

5. Reasonable density

The temperature is relatively low in winter, so when raising tilapia, some tilapia that can be sold should be salvaged. If they are of the same size, they should be raised in separate ponds, because in winter, the oxygen at the bottom of the water is not as abundant as usual. Fish must have enough oxygen to live, and the oxygen in the pond can not meet so many fish schools. So generally, we need to divide the number of A Jing into two groups and raise them separately, which can reduce the mortality of tilapia to a certain extent.