How can crabs be domesticated? How to feed crabs

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The whole process of intensive pond cultivation mainly relies on artificial feeding, and other plant feeds account for 25%, and there are three main types of feed.

1) Full-price special compound feed for river crabs;

2) Animality: sea and freshwater small trash fish, animal carcasses, snails, mussels, livestock and poultry blood, fishmeal, silkworm pupa, etc.;

3) Plant-based: aquatic weeds, duckweed, water peanuts, bitter grass, black algae, etc., commercial feed: yams, potatoes, cereals, bran, bran, etc.

The feeding method of river crabs is like pond fish farming, so as to achieve "four looks and four determinations", that is, to see the season, the weather, the water quality, and the activities of the crabs, timing, fixed, qualitative, and quantitative.

The principles of timing, positioning, qualitative and quantitative are adopted to control the single feeding amount at 6% of body weight. 3. Precautions: stop feeding when the water temperature is lower than 10 degrees, and feed aquatic plants in May and June in summer.

How should crabs and hairy crabs be raised?

1. Crab farming needs a suitable crab breeding site, with good water quality, sufficient water source, and convenient drainage. To ensure good air permeability, sandy or sandy loam should be the main area.

2. When breeding crabs, it is necessary to build crab ponds in places with convenient drainage and sandy loam, and the water depth of the crab pond is about 1 meter, before putting crab seedlings, it should be placed in the pool water to soak for 3-4 minutes to observe whether the crab seedlings have adverse reactions, and when feeding crabs, small fish and shrimp, aquatic weeds, insects and other feeds should be fed. The depth of water in the pond is controlled at about 1m, and the shallowest place cannot be less than 10cm. After the pond is built, a few mounds are left inside, and aquatic plants such as reeds, callocos, and iris are planted.

On the one hand, these aquatic plants are good nutrients for crabs to eat. On the other hand, it is conducive to strengthening the river embankment and avoiding water leakage caused by excavation.

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1. It is best to use a lid for the fish tank to prevent the crabs from escaping. Plant a aquatic weed, put some small stones and sand, and more realistically simulate the wild living environment of crabs. Crabs are also burrowing animals, so it's best to pick up a tile, wash it and put it in a fish tank and let it live in it.

Crabs should also bask in the sun, but not for too long.

2. Feed crabs bread crumbs, potato crumbs, steamed bread crumbs, rice, snails, small fish and shrimp and other foods.

3. Change the water once a week, it is best to use natural living water [river water, lake water], and use tap water for two days if you don't have it. The water should be over the back.

4. When the crab is shelled, the shell is yellow, and the body is soft after the shelling, so it should be raised separately from other crabs to avoid cannibalism. And feed more meat foods, such as small fish and shrimp.

1. Breeding environment: Breeding crabs should use a glass tank as a utensil, and spread fine sand and stones to the bottom, and then pour river or lake water into the tank. 2. Feeding method:

Do not feed crabs in the early stage of breeding, and wait for crabs to adapt to the environment before providing fish and shrimp, egg yolks and other feeds. 3. Clean regularly: Wash the back of the crab with a toothbrush and soap.

1. Breeding environment

In the process of breeding crabs, a fish tank or glass tank should be prepared as a utensil, and fine sand should be spread on the bottom to provide a suitable growth environment for the crabs, and river water and lake water should be added to the fish tank.

2. Feeding method:

Crab breeding in the early stage of no need to feed, at this time the crab has not adapted to the environment, will not eat, wait for a period of time, you can provide crabs with fish and shrimp, egg yolk, red worm and other food, and after each feeding, let the crab eat within half an hour, and remove food residues in time.

3. Clean regularly

When breeding crabs, it is necessary to clean them regularly, use a toothbrush dipped in shower gel or soap, and scrub their back armor to avoid breeding bacteria, resulting in soft and damaged crab shells, and every time the water is changed, the water in the fish tank should be discharged, and then after cleaning the inside, the crabs are re-put into farming.

1. Pour a small amount of liquor into the barrel where the crabs are placed, which can remove the fishy smell and know the appropriate amount.

2. When the crabs are slightly unconscious, pump them hard, using the back of the spatula until they are stunned.

3. When brushing, you shouldn't think about brushing a crab, but should imagine brushing leather shoes, and don't miss every corner of the stool.

4. Check that there is no silt and throw them into another bucket and rinse them with clean water.

Buying tips:

Common marine crabs include pike crabs, snow crabs, blue crabs, etc., among them, snow crabs are basically dead from the water after being caught, and pike crabs can be artificially cultivated. The food quality and growth environment of pike crab and snow crab are relatively good, and they can be eaten after death, and they should be selected freshly: the back is thick and the shell is blue-black, shiny, full of umbilicus, and the freshness of the abdomen is white.