Culture techniques of grass carp

Grass carp (Ctenopharyngodon idellus) is a kind of freshwater fish, which is widely distributed in China. The meat of grass carp is very fresh and tender, with little or no fine thorns, so it is a kind of fish that many people like to eat. Grass carp (Ctenopharyngodon idellus) grows very fast and has high economic benefits, so it is one of the largest fishes in China. So how to do grass carp culture? The following editor brings you the culture technology of grass carp, let's have a look!

1. Select land to build a pool

The first step in cultivating grass carp is to choose a good plot to build a pond. There should be enough water around the pond, and the water quality should be clean and pollution-free. Then the area of the pond is controlled according to the culture scale, the water level is kept at about 2 meters, and the thickness of the soil at the bottom is controlled at about 18 centimeters. In autumn and winter, it is necessary to do a good job in clearing ponds and drain the water for three weeks. Then half a month before stocking, pour water into the pond to 15 cm, and then sprinkle quicklime throughout the pond for disinfection. If there are conditions, it is best to be equipped with aerator and bait machine.

2. Fish fry restocking

Fish fry should choose greasy fish fry with strong growth, no wound and no diseases and insect pests. It is best to co-culture with crucian carp and other fish to improve the efficiency of culture. Before releasing the fry, disinfect the fry and soak all the fry in salt water for about 8 minutes. Avoid carrying germs and affect the growth of grass carp. And also note that the stocking proportion of grass carp should be kept above 80%, and the number of other mixed fish should not be too much, so as to avoid grabbing grass carp bait, resulting in insufficient nutrition of grass carp and affecting the growth of grass carp.

3. Input and feeding management

The feed of grass carp is mainly pellet feed, and the size of pellet feed should be controlled according to the size of grass carp. The protein feed should be controlled at about 30%, and should be fed together with green feeding. When feeding bait, we should pay attention to fixed time and fixed point, about twice a day, to ensure that the nutritional needs of grass carp can be met. And can not feed the same kind of bait for a long time, pellet feed for about two weeks to stop feeding, instead to feed a week of raw food. Finally, attention should be paid to the nutritional elements of the diet, and appropriate amounts of vitamins and other substances should be added to enhance the growth ability of grass carp.

4. Adjust the water quality

Water quality is very important to the growth of grass carp, and we have to increase oxygen regularly every day. Usually around two o'clock in the afternoon, try to increase oxygen every night. If you encounter a long period of cloudy and rainy days, then it is necessary to strengthen the work of increasing oxygen. Change the pool water regularly to maintain the water quality. when changing the pool water, first drain part of the water, and then inject new water. According to the seasonal changes to control the frequency of water change, if in summer, about 4 days will need to inject water, each injection is about 12cm. Finally, disinfection should be carried out regularly to improve the quality of culture environment.

The above is a brief introduction of grass carp culture technology, we should also pay attention to the prevention and control of diseases and insect pests in the process of culture. Avoid some unnecessary losses to harm our farming benefits. That's all for today's introduction. This article is for reference only. I hope it can help you all.