Feeding and management of freshwater grouper

Grouper is a kind of marine fish, which is called black cat fish by people in coastal areas, and it is called sea carp, but its nutritional value and edible value are higher than carp, and the market price is also higher. It is a kind of fish with low fat and high protein, which tastes better than chicken. It is rich in nutrients for the human body, and now has a very mature freshwater grouper culture technology. So how to carry on the breeding and management of freshwater grouper? Let's have a look!

1. Breeding management

Freshwater grouper usually begins to spawn after a year of breeding, and its spawning is basically the same as tilapia. When spawning, many nests are dug out in the mud at the bottom of the pond to place fish eggs. It is guarded around the egg nest after spawning and leaves when the embryo is developed to a certain extent. We should control the water quality, the spawning period of grouper is the key to growth, prevent the impact of water pollution and reduce the survival rate of young fish. Controlling the water temperature at about 28 degrees can accelerate the hatching speed of fish eggs and improve the hatching rate.

2. Seedling cultivation

The growth environment of young fish is best to choose soil pond, according to the number of young fish to determine the area of the pond, the depth of the pond water should not be less than 1 meter. Before cultivation or stocking, the pool water should be dried, then exposed to the sun and disinfected with quicklime powder, and an appropriate amount of base fertilizer should be applied to the bottom of the pool to improve the fertility of the water quality and make there is a certain amount of plankton in the pool. Because plankton can be used as food for young fish, when plankton decreases, an appropriate amount of soybean milk can be fed, and then some bait can be gradually increased. The amount of food is generally about 1 × 5 of the total weight of fish, and the feeding frequency is determined according to the growth situation.

3. Bait feeding

When the length of the young fish does not exceed 1cm after hatching, it will swim collectively at the bottom of the pond, and the yolk sac of the young fish will gradually disappear when the water temperature is controlled at 27 degrees for a week. The young fish then begin to swim to the top of the pond and can feed some plankton when the yolk sac disappears. When growing up to a certain extent, it can be fed with high-protein diet, which usually grows to 8-12cm a month later. At this time, it can be raised as an adult fish, and the judgment of adulthood depends on the weather and surrounding environment of the culture area.

4. Adult fish management

Mixed culture can be used for grouper culture, such as tilapia and some freshwater farmed fish. Mainly to culture grouper, control the secondary culture of fish, to prevent culture too dense, affecting the growth of grouper. Determine the culture quantity according to the pond area, feed properly according to the size and growth of the fish during culture, and pay attention to the number of mixed fish to prevent the grouper from competing for food and the phenomenon of malnutrition. Generally speaking, some of them can be out of the column after about six months of breeding.

The above is the breeding and management of grouper, the nutritional value of grouper is very high, grouper is a tropical fish. The demand for water temperature is relatively high, it is necessary to strictly control the water temperature to prevent the water temperature from being too low, because too low water temperature will affect the appetite of grouper, and in serious cases it will lead to death. That's all for today's introduction. This article is for reference only. Thank you for your reading and support.