What is good to feed crayfish? What should be fed to farmed crayfish?

First: increase or decrease the amount of feeding according to the season.

For the hot weather in summer, crayfish usually burrow in order to avoid the heat; For winter, crayfish also burrow to escape the cold winter. Therefore, in these two extreme weather, in order not to waste the bait, the amount of bait fed to crayfish should be reduced.

Second: Feed according to the time.

When the crayfish is in full bloom, its feed supply will gradually increase. And because crayfish like moisture and fear of light, they have the habit of living day and night. According to this principle, we can reduce the amount of crayfish feeding in the morning, and at night, we should increase the amount of crayfish bait feeding, so that the crayfish will not live hungry, and at the same time save a certain amount of breeding costs.

Third: Feed scientifically according to the growth habits of crayfish.

The same batch of crayfish takes about the same time to shed their shells. Before and after the crayfish is shelled, it itself is extremely lacking in calcium sources. Therefore, when feeding crayfish during this period, farmers can mix some substances with high calcium content in the feed, such as egg shell fragments or powder, to accelerate the shelling and long shell of crayfish, so that crayfish can grow rapidly.

Fourth: Feed the crayfish according to their pathologies.

When crayfish have soft shell disease, farmers can appropriately mix a certain amount of vitamin D in the feed to accelerate the absorption of calcium by crayfish. When crayfish have black gill disease, farmers can mix a certain amount of vitamin C in the feed, and the addition ratio is 1 gram of vitamin C per kilogram of feed.

1 Animal feed Lobsters love to eat a lot of animal feed, especially the dead fish, pigs, cattle, chickens, ducks, fish intestines and other scraps with a strong fishy smell, lobsters love to eat. In addition, snails, mussels, earthworms, and earthworms in ditches and rivers are also good live animal feeds for lobsters.

Of course, animal bait also includes dried small trash fish, fish meal, shrimp meal, snail powder, egg chrysalis powder, pig blood, pig liver and lungs, etc.

2 Plant-based bait Plant-based bait includes phytoplankton, young parts of aquatic plants, duckweed, cereals, soybean cakes, rice bran, soybean flour, wheat bran, rapeseed cakes, vegetable oils and fats, beer grains, etc.

In plant-based bait, beans are a high-quality source of plant protein, especially soybeans, with a crude protein content of up to 38% to 48% of dry matter, and the digestible protein content in soybean cake can also reach about 40%. As a high-quality source of plant protein for shrimp, it is not only because of the high protein content of soybeans and its wide range, but more importantly, because its amino acid composition is relatively close to that of shrimp. Since soybean meal contains trypsin inhibitors, it needs to be destroyed with organic solvents and physical methods.

For cultivated shrimp larvae, soybean milk made from soybeans is an extremely important bait, and it is used in combination with monocytes, yeast, plankton, etc., to become a good comprehensive initial protein source.

Rapeseed cake, cotton cake, peanut cake, bran and bran are all excellent protein supplementary feeds, and the appropriate ratio is conducive to reducing costs and meeting the physiological requirements of shrimp.

Some plants contain cellulose, and because most shrimp have cellulase in their digestive tract, they can use cellulose, so shrimp can effectively eat and digest the edible parts of some natural plants, and promote physiological functions. In particular, many aquatic plants are rich in protein, B vitamins, vitamin C, vitamin E, vitamin K, carotene, phosphorus and calcium in dry matter, which is a good natural bait to improve the growth rate of lobster.

The best plant-based feed is soybeans, pumpkin, rice bran, wheat bran, bean dregs, sweet potatoes, and duck tongue grass, eye cabbage, bamboo leaf vegetables, water hyacinth, silk grass, bitter grass, etc. Because they can be artificially cultivated at the same time as the shrimp ponds on the vacant land for lobster consumption.

3 artificial compound feed artificial compound feed is to determine the more suitable formula of animal bait and plant bait according to the nutritional needs of freshwater crayfish, and then mix and process feed according to the formula, which can also appropriately add some minerals, vitamins and disease prevention drugs as needed, and make particles of different sizes according to the different development stages and individual sizes of freshwater crayfish. In the feed processing technology, it must be noted that freshwater crayfish is a chewing mouthpart, which is different from the swallowing mouthpart of fish, so the compound feed should have a certain viscosity and be made into strips or flakes to facilitate the ingestion of freshwater crayfish.

Artificial compound feed formula for freshwater crayfish: the protein content of the feed of the larvae shrimp is required to reach more than 30%, and the feed protein content of the adult shrimp is required to reach more than 20%.

Feed type: In addition to feeding snails, it is mainly fed with full-price feed, and the supplementary plant feed is corn, wheat, pumpkin, potatoes, etc. The principle of feeding, the overall feeding throughout the year is in accordance with the principle of two ends of fine and thick in the middle.

Feeding method, timing, qualitative, quantitative, positioning. Fourth, it mainly depends on the season, water color, weather and the eating activities of shrimp and crabs.

According to the nutritional needs of lobsters in the growth and development stage, do a good job in the combination and feeding of feed. In the juvenile and juvenile stage of lobster, they feed on rotifers, cladopods, copepods and larvae of aquatic insects, while in the adult stage, they feed on both animal and plant bait. After the stocking of shrimp seedlings and shrimp seeds, fertilizer should be applied in a timely manner to fertilize the water quality.

In the rapid growth stage of lobsters from August to October, feed more bran, soybean cake and green feed, and feed animal feed appropriately. From November to December, before the lobster winters, it is mainly fed with animal feed.

Feed lobsters according to their living habits and feeding characteristics. Lobsters are mostly active at night to feed, and have the habit of competing for food and gluttony. Feeding feed should be insisted on feeding once a day in the morning and afternoon, mainly once in the afternoon, accounting for 70% of the day's feeding; Adopt qualitative, quantitative and regular feeding methods, feed enough and evenly to ensure that shrimp have sufficient food intake and avoid competing with each other for food.

Feed reasonably according to the weather, water quality changes and shrimp and crab activities. The suitable water temperature for lobsters to grow is 20-32. From August to October, the lobster has a large intake, and the daily feeding amount can be 6-10% of the shrimp's body weight, and the dry feed or compound feed can be fed according to 2-4%, and the weather, water quality and shrimp activities and foraging conditions can be increased or decreased appropriately.

If the weather is rainy or the water quality is too strong, you can reduce feeding, and feed more in a timely manner when the weather is fine; A large number of shrimp are fed less when molting and more after molting; Shrimp should be fed less during the onset season and more when the growth is normal. It is necessary not only to make the shrimp full and eat well, but also to reduce waste and improve feed utilization.

It is recommended to self-batching, economical and cost-effective, I use Zhengchang Feed Technology's crayfish special premix, this year's crayfish grow much better than last year.

You don't need to worry about a lot of things, just be appropriate.

Feed some livestock.

Scraps, miscellaneous fish, minced meat, etc.

Add some work to mix the feed all.

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Crayfish can feed on grass, aquatic weeds or grain feed and animal feed.

In the early stage of breeding, it is mainly fed cooked soybean milk, and small trash fish, snail meat, etc. can also be fed; In the later stage, you can feed fresh miscellaneous fish, earthworms, livestock and poultry offal and other animal feed, soybean cake, bran, corn and other plant feed, as well as special feed for shrimp, the amount of feeding is subject to full, no residual bait, can be fed regularly and fixedly twice a day, 1 time in the morning and 1 time in the evening.

Crayfish farming attention:

The best growth period of crayfish is from September to November in autumn and spring (mid-March to mid-June) to adapt to the new environment takes a long time to adopt the spring breeding model, spring and autumn can not be fully utilized, the specifications are lower, the growth period is shorter, the yield is still low, many spring seedling farmers, with this method of breeding efficiency is not very good, so it is advocated to sow (seedlings) in summer and autumn and replenish seedlings in spring.

Good seedlings are good seedlings, seedlings are good and the yield is high, the seedlings are the first factor that determines whether the yield is high, if we master the seedling technology, we can solve the problem of high yield and high efficiency, natural seedlings are inbred seedlings.

What feed is good for crayfish? In the process of crayfish farming, factors such as fresh feed, rich nutrition, and appropriate size will affect the quality of lobster. The normal feeding method is to feed once in the morning and afternoon, the appropriate water temperature is 21 28, and the feed can be increased or decreased appropriately according to the state of the lobster.

The feed of crayfish is also divided into four types, and only when the match is balanced, can crayfish grow well.

1. Animal feed.

Mainly plankton, animal live bait and animal scraps. The live bait fed by artificial breeding includes earthworms, silkworm pupa, fly maggots, river mussels, mealworms, small trash fish and silver carp minced meat.

These feeds are high in protein, palatability, and nutrition, but the quantity is small and cannot be stable for a long time**, especially the gap in large farms** is obvious.

2. Plant feed.

Note that it is cereals, including wheat flour, corn flour, rice bran, okara, etc. Proper feeding of plant feed containing cellulose is conducive to promoting the intestinal peristalsis of crayfish, improving feeding intensity and feed utilization, and is usually mixed with compound feed and fed together.

3. Compound feed.

Mainly powdered feed, saccharified fermented feed, pellet feed, microcapsule particle floating feed, etc. This feed is very suitable for large-scale lobster farming, which can fill the shortage of animal feed.

This kind of feed has a high utilization rate, causes little pollution to the water body, and the palatability of lobsters is also good, which is more convenient to eat than animal feed.

Fourth, light insect traps.

In fact, it literally, it is to use black light to attract insects, this method is very good as a supplement to crayfish feed, and insects and larvae are also good bait for crayfish.

Hello, lobsters can be fed with vegetables, tofu, fish and shrimp meat and other foods, especially tofu and fish and shrimp meat are of great help to the growth and health of lobsters. Lobsters are a special type of aquatic organism that requires a variety of nutrients to maintain growth and health. Generally speaking, lobsters can be fed with foods such as greens, tofu, fish and shrimp meat.

Among them, tofu and fish and shrimp meat are one of the main foods of lobsters, which can provide lobsters with nutrients such as protein, vitamins and minerals, which help promote the growth and health of lobster slip belts. In addition to tofu and fish and shrimp meat, lobsters can also be fed some vegetables such as carrots, celery, cauliflower, etc. However, it should be noted that the food fed to lobsters should be fresh and clean to avoid bacterial and viral infections to lobsters.

In addition, lobsters also need to bend the right amount of water in the reed, you can add some seaweed powder and calcium supplements to the water, which will help the growth and health of lobsters. In the process of lobster farming, it is also necessary to regularly clean the water quality and replace the water source to keep the water clean and fresh.

Lobsters can be fed: live fish, small shrimp, minced chicken, fish fillet, shrimp skin.

1. Live fish. Lobsters are carnivorous and prefer to eat live fish. Lobsters can be fed small fish on a regular basis, such as boat fish, small crucian carp, etc. However, it is important to control the portion size and avoid deteriorating the water quality by feeding too much.

2. Small shrimp. Small shrimp are the natural food of lobsters and are highly nutritious. Lobsters can be fed some live shrimp on a regular basis, or frozen shrimp.

3. Minced chicken.

Minced chicken is also one of the most commonly eaten foods for lobsters. You can choose chicken breast or chicken thigh, cut into small pieces and feed to the lobster. It should be replaced regularly and be cautious before embalming.

4. Fish fillet. You can choose eel, silver carp, hairtail, etc., and cut them into fillets to feed the lobster. Fish fillets are highly nutritious, and lobster blind grandchildren also like to eat. Feed in moderation and feed lobster 3-5 fillets at a time.

5. Shopee. The skin left behind after lobster peeling is also a nutritious food. The shrimp skin is rich in marine collagen and Huijing amino acids, and lobsters are very fond of food. Feed in appropriate amounts to avoid decay.

Domestic crayfish can be fed: 1. Plants: water hyacinth, water floating lotus, algae, plant rhizomes, etc.

2. Meat and insects: trash fish, silkworm pupae, earthworms, snail mussel meat, etc. 3. Others:

Rice bran, bean cake, oatmeal, etc. Crayfish have a mixed diet, eat both animals and plants, and especially like to eat juicy and tender green plants.

Crayfish is an aquatic animal of the crustacea, decapoda and crayfish family, also known as crayfish, red crayfish and freshwater crayfish, which resembles a shrimp and has a hard crust.

Crayfish inhabit wetland meadows, underground caston systems, seasonal swamps, permanent swamps, permanent lakes and streams, rice paddies, irrigation channels, reservoirs, etc.

Crayfish has strong adaptability and has a wide range of suitable growth temperatures, and can grow and develop normally when the water temperature is 10-30. Its lifespan is not long, about 1 year.