Does freshwater fish grass carp eat small fish and field snails? What exactly do you eat to grow up? How many grass carps can be raised in an acre of fish ponds?

Grass carp, also known as black green, grass bud, oil, grass, white, etc., is a common fish in our country, mostly growing in rivers and lakes, because of the delicious taste, high nutritional value and deeply loved by people, at present many people also carry out artificial breeding, that grass carp eat small fish, field snail? What exactly did you eat growing up? How many grass carp can be raised in one mu fish pond?

What do you eat growing up?

1. Feed:

Grass carp is a typical herbivorous fish. It feeds zooplankton in its fry stage, insects, earthworms, algae and duckweed in its juvenile stage. When its body length reaches more than 10 cm, it completely feeds aquatic higher plants, especially Gramineae plants. The types of plants it feeds vary with the food base in its living environment.

Natural foods include:

(1)Crops: grass carp like to eat all kinds of weeds and aquatic plants on land, and all kinds of crop seedlings and vegetable seedlings also like to eat, so when feeding, you can put some tender leaves, tender seedlings and so on.

(2)Insects: Grass carp not only like to eat grass, but also like to eat insects, especially green grasshoppers and green insects on summer plants are the favorite of grass carp.

(3)Corn kernels: grass carp also like to eat corn kernels, especially in the summer when fishing, many fishing friends directly with tender corn fishing, can harvest a lot of fish.

2. Grass:

Grass carp eat a lot of food, in addition to grass, corn grains, but also eat grass, but not all grass love to eat. For example, duckweed, aquatic plants and early grass are fish's favorite foods. According to experiments, for every 0.5 kg weight gain, grass carp need to eat 45 kg of water grass or 20 kg of early grass. The grass carp has a certain selection of early grass. Reticulate veined grass is less likely to be eaten than flat-veined grass. Whether it is early grass or water grass, it is better to be tender, because young grass has more protein and less cellulose, and fish are easy to digest and utilize.

3. Feed

(1)How much feed does one catty of grass carp need?

Scientific feeding is the key to reduce the feed coefficient and save the cost of medicine. The water temperature is 25℃~30℃, and the feeding rate of 250 g grass carp should be controlled at about 2.0~2.3%. In addition, according to the water quality, weather, fish health status and other timely adjustment of the feeding rate, feeding process, management personnel should pay attention to observation at any time, when the fish do not float feeding can stop feeding.

(2)Feed mix:

① Straw 50%, rice bran 22.5%, bran 5%, bean cake 15%, fish meal 5%, bone meal 1%, salt 0.5%, vitamin additive 1%, crude protein content of feed 18.78%, feed coefficient 2.4.

(2) 50% straw, 25% rice bran, 25% bean cake, 10kg flour waste as binder per 100kg mixture, crude protein content of feed 23.35%, feed coefficient 2.8, feeding specification of about 0.05kg per tail.

(3) Flour 30%, fish meal 10%, bean cake powder 15%, bran 25%, rice bran 20%, under the premise of the same total amount of basic diet, sweet potato powder 12%, salt 0.5%, auxin 2%, calcium hydrogen phosphate 2%, feed coefficient 4.8 can be added according to the actual situation.

4. Flour 30%, rice bran 8%, bran 38%, bean cake 10%, fish meal 10%, yeast powder 2%, premix 2%, feed coefficient 1.9, if added green feed coefficient 2.2.

5. Flour 30%, fish meal 10%, bean cake powder 15%, bran 25%, rice bran 20%, under the premise of the same total amount of basic diet, sweet potato powder 12%, salt 0.5%, auxin 2%, calcium hydrogen phosphate 2%, feed coefficient 4.8 can be added according to the actual situation.

(6) Sweet potato vine powder 55%, bean cake powder 15%, bran 5%, flour 25%, under the premise of the same total amount of basic diet, sweet potato powder 12%, salt 0.5%, auxin 2%, calcium hydrogen phosphate 2%, feed coefficient 15 can be added according to the actual situation.

How many fish are raised in an acre of fish pond?

As the main fish culture, 80~100 fish can be stocked in one mu of fish pond; as a fish culture, 20~30 fish can be stocked in one mu, and the most suitable stocking specification is 2-year-old fish species (0.25~0.5 kg per tail). Such fish can grow to 1.5~2.5 kg in the same year, and can reach 3~4 kg or even more than 4 kg in one year (3-year-old fish).

Grass carp in the breeding process, special attention should be paid to feeding management, in order to reduce grass carp gill rot, enteritis and other diseases, we must adhere to the implementation of the "four fixed"(timing, quantitative, qualitative, positioning) feeding, to prevent and cure diseases in time. Grass carp likes clear water, so in recent years grass carp is also used as the main species of industrial fish culture and cage fish culture.