How many jin can grass carp grow in a year? how does grass carp grow big and grow fast?

Grass carp belongs to a kind of fish, but also we usually common and often eat a kind of fish, it has the prevention of cancer, osteoporosis symptoms, but also can supplement some of the nutrients needed by the human body. With the increasing demand for grass carp, aquaculture has become the most popular breeding project. Do you know how many pounds of fish can grow in a year? How to grow fast?

How many pounds can fish grow in a year?

General stocking half catty fry, feed grass that year, sufficient words at the end of the year can grow to more than 3 catties.

The grass carp grows rapidly. The fastest growth period of body length is 1-2 years old, and the fastest growth period of body weight is 2-3 years old. When the fourth-year-old fish reached sexual maturity, growth slowed down significantly. 1 winter fish body length of about 340 mm, weight of about 750 grams;2 winter fish body length of about 600 mm, weight of 3.5 kg;3 winter fish body length of about 680 mm, weight of about 5 kg;4 winter fish body length of about 740 mm, weight of about 7 kg;5 winter fish body up to 780 mm, weight of about 7.5 kg; the largest individual can reach about 40 kg.

How to grow grass carp quickly

1, fry in April after the Qingming Festival stocking, April can be seen everywhere tender grass, then 9:00 in the morning can cut the tender weeds in the field to feed fry, feeding amount of 3 hours to eat is appropriate, 4 p.m. feed two hours to eat is appropriate.

2. In the beginning of spring, it is also possible to plant grass such as elephant grass to increase green material, and the protein of elephant grass is 16% with strong drought resistance and strong growth.

3. By mid-May, the cassava planted by farmers can be cut off to feed grass carp, that is to say, 1 to 4 roots will grow after cassava planting, leaving only one to cut off the excess, which is conducive to growth. The protein content of cassava leaves is about 20 percent. Cassava leaf feeding amount of 3 hours to eat up is appropriate, 4 pm feed two hours to eat up is appropriate.

4. Make a square feeding box with bamboo for easy feeding. After feeding, the cassava stems should be picked up in time to avoid rotting in the water and affecting the water quality.

5, cassava leaves and elephant grass to alternate every other day to increase the feeding of different nutrients.

6. After 8 to 9 months of careful feeding of green feed and feed, the weight of grass carp can reach 4 to 5 jin, so that the good price of grass carp meat is more than double that of grass carp fed with feed alone.

7, feeding should be regular quantitative, meet rainy days to not feed fish or feed less. Feed to choose a good reputation manufacturers.

Feed mix of grass carp

1. Straw 50%, rice bran 25%, bean cake 25%, flour scraps 10 kg as binder for every 100 kg of the above mixture, crude protein content of feed 23.35%, feed coefficient 2.8, feeding specification of about 0.05 kg per tail.

2. Straw 50%, rice bran 22.5%, bran 5%, soybean 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.

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

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

Grass carp feeding precautions

1, reduce the input of aquatic aquatic plants: according to experimental observations, grass carp eat 15 kg of terrestrial plants can grow 1 kg of meat, and eat 60~80 kg of aquatic plants to grow 1 kg of meat, so in the case of sufficient sources of terrestrial plants, can feed less or not feed aquatic plants.

2, more feeding fresh grass: fresh grass is rich in nutrients, less cellulose, easy to digest, grass carp ingesting fresh grass, can make grass carp grow faster, less sick, can also reduce the amount of feeding, reduce breeding costs, improve economic benefits. Therefore, feed grass carp fodder, should try to choose fresh fodder. The forage species should be long green grass with parallel veins, and it is not suitable to feed grass carp with net veins. It is better to feed cultivated grass such as ryegrass and sudan grass and collected wild long-leaf young grass.

3, feeding method should be appropriate: grass carp feeding, every day to be regular, sufficient, evenly fed, strive to spread the grass, let the fish eat, eat well. Feed rates should be adjusted according to weather, water quality and fish activity. It is strictly prohibited to feed forage that has been stored for too long and rotten to avoid grass carp infection.

4. Feed according to fish caliber: grass carp has a small caliber in the juvenile fish stage, so it is not allowed to feed coarse and hard forage. It is advisable to feed small duckweed, salsa grass and other forage, or cut fresh long-leaf grass into pieces and feed them. Later, as the fish age increases, the caliber also gradually increases, and it can be transferred to feeding conventional fresh fodder.

The above is a summary of the grass carp farming skills for everyone, I hope to be able to help everyone. Grass carp itself grows fast, if later scientific feeding, can also speed up the growth rate, but not in order to speed up the growth rate with hormones or drugs oh!