Herring culture density

The suitable culture density of herring is about 800-1000 fish per mu, and the reasonable culture density can reduce the incidence of herring and facilitate pond management in the later stage, during which silver carp or bighead carp can be mixed cultured, which can improve the water quality. it can promote the growth of herring, so as to improve the quality and yield of herring.

1. Pond preparation

Herring is generally cultured in the pond, the water quality of the pond should be clean, clear and sufficient, the area of the pond should be moderate and not too large, the water depth in the pond is generally about 2.5 meters, and there should be no silt and potholes at the bottom as far as possible, so as not to cause water leakage or leakage. The water in the pond should be discharged before the fry is released, and the silt and excess debris in the pond should also be removed, and then the pond should be exposed or frozen for a few days. Then sprinkle lime powder in the pond for disinfection, in about 4 days of disinfection, the pond can be filled with water, pay attention to prepare a few more feeding machines in the later stage to prevent pond hypoxia.

2. Density of herring culture

The reasonable culture density of herring makes full use of pond water quality and bait to improve the productivity of all kinds of fish, so as to achieve the purpose of high yield and high efficiency. In order to reduce the incidence of herring and facilitate the management of ponds in the later stage, the suitable density for culture is 800-1000 fish per mu, and silver carp or bighead carp are mixed during this period.

3. Release mode of fish fry

When selecting fish fry, you should pay attention to those who are not sick and energetic, as well as those that have no scars and eat a large amount of food, so as to avoid the law of the jungle. The size of the selected fry should be less than 3 cm as far as possible. do not mix other kinds of fry when stocking fry. Generally, fish fry can be released from January to February, because the temperature at this time is just suitable for the growth of fish fry, and the body scale of fish fry is relatively tight, which will not cause damage, and then mixed culture of silver carp or bighead carp, these two kinds of fish can improve the water quality and promote the growth of herring.

4. Feed feeding method

In order to promote the growth of herring, some synthetic feed containing protein can be fed, during which a feeding table can be built to facilitate feeding, and the herring can also be domesticated. The amount of feeding should not be too much, so as not to cause indigestion and can be fed repeatedly and in small amounts. After the herring is domesticated, it can be fed regularly, and the feeding capacity can be increased when the herring grows up in the later stage. During the peak growing season, the herring can be fed several times. To promote the rapid growth of herring.

5. Water quality management

To strengthen the management of herring, it is necessary to check the growth status and water quality of herring once every morning and evening. During this period, the water in the pond should be regularly added or replaced to keep the water quality good, the healthy water quality is green, and the transparency is between 50 and 60 centimeters. The herring grows faster in summer, and its strong activity leads to an increase in food intake. The higher temperature in summer will cause hypoxia in the pond. Therefore, we should pay more attention to the dissolved oxygen of the water in the pond, keep the oxygen supply equipment working, and do a good job in disinfection.