CATDOLL : CATDOLL: Indoor freshwater shrimp farming technology? Fish farming technology?

1. Indoor freshwater shrimp farming technology?

Indoor freshwater shrimp farming also requires a shrimp pond, which must be disinfected before use and equipped with oxygenation equipment. Select healthy shrimp fry and put them into the pond in the evening on a sunny day. The water temperature should be kept above 20℃. Then feed them regularly, 5-6 times a day.

You should also pay attention to checking the water quality on a regular basis. The dissolved oxygen content should be higher than 4 mg per liter, and the nitrite ammonia content should not exceed 0.1 mg per liter.

2. Fish farming technology?

1.

Stocking time selection: Fish should be released on sunny days when the temperature is not too low. Generally, the temperature should be between 2℃ and 5℃. At this stage, the fish scales are tight and the activity is small. It is not easy to injure the fish during fishing, transportation and stocking operations, which can reduce the morbidity and mortality of fish. It is easy to frostbite the fish on rainy days with low temperature or snowy, frozen and windy weather; when the temperature is too high, the fish scales are loose and the activity is large, which is easy to injure the fish during operation.

2.

Stocking of fish: Before stocking the fish, check whether the drugs have lost their effectiveness after pond cleaning. In early spring, the water temperature is low and the toxicity disappears slowly. Water should be taken in advance and test fish should be released. According to the stocking plan, individual size, density, and matching species and specifications, the fish that can be released at one time should not be released in batches, so that the fish can adapt to the environment, start eating early, and promote growth. At the same time, [Gold Iodine] should be used for drug disinfection when stocking fish.

3.

Feeding at the right time When the water temperature rises to 810℃, fish begin to eat, and the amount of food intake gradually increases with the increase of water temperature, so they should be fed in time. Feed once a day or every other day, and choose to feed at noon on a sunny day; as the water temperature continues to rise, the number of feedings can be increased to twice, that is, feeding once in the morning and once in the afternoon. Feeding should adhere to the principle of four determinations (timing, quality, positioning, and quantity), and the specific daily feeding amount should be flexibly controlled according to the weather, water temperature, and the feeding situation of fish. For grass carp weighing more than 1 jin, it is recommended to feed Da Beinong high-grade expanded feed 8103 in the early stage of feeding; for small grass carp mode, it is recommended to feed Da Beinong microecological juvenile fish special feed [Intestinal Liver Health], and the feeding rate is controlled at about 0.5%1%. This product is rich in nutrients and probiotics, which can quickly repair the fish intestines, restore the physique, and improve immunity.

3. Which fish are suitable for freshwater farming in the north?

The following freshwater fish species are suitable for breeding in northern China

1. Carp Carp is one of the common freshwater fish in the north. They are often found in soft mud bottoms and waters with ditches, slopes, branches, rocks and other places where it is easy to hide or forage. Carp is an omnivorous fish and mainly feeds on vegetarian food. Fresh corn kernels and bran can be used as bait. Additives should mainly be fish meal, shrimp meal, silkworm meal, etc. with fishy smell.

2. White Stripe White Stripe is a primary freshwater fish. It has high requirements for water quality and reproduces quickly. This fish is similar in appearance to the horse mouth and the black bass. White Stripe likes fishy food and is a common fish at low altitudes. It likes to live in groups in the upper water layer of streams, lakes and reservoirs, and the depth of its habitat is generally 0 to 10 meters.

3. The scientific name of the Cockroach is Erythroculter ilishaeformis. It is large and slender. It is a large freshwater economic fish in the middle and upper layers. It moves quickly, is good at jumping, has a violent temperament, and is easily frightened. It grows rapidly and is a ferocious carnivorous fish that feeds mainly on live fish. The Cockroach can grow to the size of a meter and is very large.

4. Crucian carp is one of the common freshwater fish in the north. It grows in small rivers with stable water flow and abundant aquatic plants and plankton.

4. Indoor breeding technology?

1. Suitable light

When growing plants indoors, you need to pay attention to the light and understand the preferences of the plants. Plants that like light can be placed in places with better light. Plants that like shade should be placed in places that can provide shade. You can place them according to the preferences of different plants.

2. The right amount of water

When growing plants indoors, when to water them depends on the condition of the soil in the pot. Watering should be done evenly, and it is best to use tap water that has been prepared in advance, as the water temperature is the most suitable. Secondly, each flower pot needs to be equipped with a bottom mat so that watering will not dirty the floor.

3. Appropriate amount of fertilizer

If it is a newly bought plant, no fertilizer is needed within one year. If it has been cultivated at home for more than one year, it is necessary to add appropriate amount of fertilizer. It is best to choose slow-release fertilizer, but it should be appropriate, not too much, so as not to burn the roots. Secondly, no matter which plant it is, no fertilizer is needed during the dormant period.

4. Suitable temperature

Indoor temperatures are generally suitable for many plants to grow, but in the summer, you need to water more to cool the plants and provide them with the necessary moisture. In the winter, you need to water less to keep the plants growing.

5. Proper ventilation

Indoor breeding must be well ventilated, especially in summer, ventilation can reduce temperature. Even in winter, proper ventilation is required, but winter ventilation depends on weather conditions. When the weather is good, short ventilation at noon is sufficient.

5. What is the full name of freshwater aquaculture technology?

It is called freshwater aquaculture. Freshwater aquaculture technology refers to the use of ponds, reservoirs, lakes, rivers and other inland waters (including brackish water) to raise and breed aquatic economic animals (fish, shrimp, crab, shellfish, etc.) and aquatic economic plants. It is an important part of the inland aquaculture industry.

The main objects of aquaculture are fish, including Macrobrachium rosenbergii and Hainan prawns, and the main crabs are river crabs. China's freshwater aquaculture fish mainly include: black carp, grass carp, silver carp, bighead carp, carp, crucian carp, bream, bream, dace, non-cruise carp and other economic fish. China's freshwater aquaculture area and output rank first in the world.

6. Freshwater bass farming technology?

Seedling cultivation: Select 1.5-2 cm sea bass seedlings from the sea area, and then put them into a temporary holding pond with a salinity of 1% after desalination treatment.

Water quality adjustment: adjust according to the transparency and color of the water body, and inject an appropriate amount of new water. Pond construction: select a site with good water quality, flat ground, and a complete drainage system. Seedling stocking: After cultivation, the perch seedlings of about 10 cm are neatly stocked into the pond with different fish species, and the stocking density is adjusted.

7. Freshwater shrimp farming technology?

Before breeding, you must have high-quality breeding facilities, that is, ponds. The depth of the pond should be between 1 and 1.5 meters, the area should be more than 4 mu, but not too large, not more than 10 mu, the edge of the pond should have a slope, and the soil at the bottom of the pond should be soft and flat. The slope of the edge of the pond should be hard, and the water source should be of good quality. It is best to have a water level control system and a scientific drainage and irrigation system.

8. Freshwater snakehead fish breeding technology?

Selection of fish pond. For breeding black carp, the fish pond area should not be too large, 1 to 2 mu is the best. The water depth should be 1.5 to 2 meters, the bottom mud should be shallow, and the inlet and outlet should be equipped with escape prevention nets. Disinfect the fish pond with quicklime before stocking. At the same time, plant 80 to 100 cm wide water lilies around the pond. This can prevent the black carp from jumping out of the pond and provide shade.

Stocking fish. Although the price of fish bought at the market is relatively low, the sizes are different, and the fish bodies are injured due to catching and other reasons, so they must be disinfected before being put into the pond. The fish bodies can be soaked in 2.5% to 3% salt water or 0.001% bleach solution for 15 to 20 minutes.

The stocking density of fish should be determined according to conditions such as feed and water quality. Generally, 1,000 to 1,500 fish of about 10 cm in length are stocked per mu, and 200 to 300 large-sized silver carp can be raised. Dozens of mature tilapia can also be stocked, and the hatched fry can be used for black carp food.

Feeding bait. Snakehead fish bait includes animal viscera and various small fish and shrimp. Some farmers use chicken intestines for feeding, which has also achieved good results. If you raise mealworms, maggots or earthworms yourself, you can not only solve the bait problem, but also greatly reduce the breeding cost. Snakehead fish can also be fed with artificial compound bait, the formula of which is: 70% minced fish and shrimp paste, 20% soybean powder, 5% yeast powder, and the rest is multivitamin mineral salts, growth promoters and antibiotics. Feed twice a day, the amount of feed is 5% to 7% of the fish body weight, and it is difficult for most fish to eat enough. When using artificial compound bait, feeding training must be carried out from an early age. In the early stage, earthworms or fish and shrimp paste can be placed on the feeding table, and the feeding table can be hung 20 cm below the water surface to lure the fry to feed. After the fry are accustomed to eating on the feeding table, gradually increase the compound bait. Do not feed live bait in the middle of feeding training to avoid affecting the training effect.

Daily management. Inspect the fish pond in the morning and evening to check the growth of the fish, clean up the leftover bait in time, and disinfect the feeding table regularly. You can use 0.001‰ bleaching powder to sprinkle it. Use 15 kg of raw ash per mu every half month, and sprinkle it all over the pond. Also, regularly flush with new water to keep the water fresh.

9. Freshwater shrimp farming technology?

1. Pond construction and cleaning

If you want to breed freshwater shrimp well, you must choose a pollution-free place with good water quality to build a pond. A good growth environment can make the shrimp grow faster. The water depth should be about 3m when building the pond, and reasonable inlets and outlets should be set up. The feeding and oxygenation equipment should be increased reasonably. After clearing the debris and garbage in the pond, expose it to the sun for a week, and then sprinkle quicklime to disinfect the pond.

2. Pond water inflow

After the pond is disinfected, fertilizer water should be injected into the pond. Generally, appropriate diluted manure fertilizer should be added to the new water to keep the pond water in an alkaline environment. According to the specific situation, water should be added in batches to reasonably control the transparency of the pond water. This is very beneficial for shrimp farming.

3. Shrimp seedlings release

Generally, 750,000 to 1 million shrimp fry are released per hectare. Such a reasonable stocking density is conducive to the rapid fattening of shrimp. Overstocking can easily lead to the occurrence of diseases. Before introducing shrimp fry, they must be strictly screened to prevent them from carrying viruses.

4. Water quality management

Before the shrimp fry grows to 5cm, the water quality is mainly managed by water cultivation and fattening. When the water quality is relatively transparent, organic and inorganic fertilizers need to be added. Reasonable control of water transparency can increase the growth rate of shrimp fry.

5. Feeding management

If you want to fatten shrimp fry quickly, you need to do a good job of feeding the shrimp according to their eating habits. And do a good job of daily inspections. If there is overfeeding or lack of oxygen in the water, you need to control the amount of feed for the white shrimp in time, and change the water quality in time.

10. Zhejiang freshwater aquaculture technology?

Before the fish are put into the pond, they can be bathed in 3% to 5% salt solution for 15 minutes to kill parasites and germs; they are usually transported in oxygenated live water trucks or nylon bags. Before transportation, they should be kept in a cage with micro-flowing water for 12 hours before shipment.

The stocking density is configured according to the seedling specifications, pond conditions and planned growth specifications. The general stocking density is controlled at 1500-2200 per mu.

During the fry cultivation process of Culex bream, the growth rate varies greatly. If there are a few larger individuals, they should be screened out before transportation to improve the survival rate of aquaculture.