What is the knowledge of rainbow trout farming and the conditions for rainbow trout farming?

It's so professional, I know that I need to use living water to raise that.

When breeding rainbow trout, we must choose the feed reasonably, rainbow trout is very sensitive to the feed, they have very strict requirements for the shape and softness of the feed, the particle size of the feed will not only affect the amount of rainbow trout eat, but also affect their taste to flow culture, rivers and lakes can be! Pond breeding under heavy rainwater mixed with easy to die. It's more troublesome!

<> rainbow trout (oncorhynchus mikiss) is a cold-water fish belonging to the salmonidae family, which is currently one of the most widely farmed fish species in the world. Because rainbow trout is most suitable for artificial intensive farming, with high yield, high efficiency, broad market and other characteristics, rainbow trout farming has developed rapidly, and the scope of breeding area and output are increasing year by year. There are farms in the town next door to my house, so I don't know if it's the same kind.

When I went to the farm, I asked the owner of the farm, saying that this kind of fish has very strict requirements for the breeding environment and water quality, and the water is a long-term flowing spring water, and the mortality rate is very high if it is not cultivated properly.

We have a rainbow trout farm here that has been open since I was a kid and until now. Business is very good, rainbow trout ** is more expensive, the meat is delicious, and it is the first choice for many people who love to eat fish. This mainly depends on whether you have breeding technology and natural conditions of the location, water flow, water quality, temperature, altitude, and whether there are pollution sources in the local area, whether the transportation is convenient and other conditions.

The water quality in the mountainous areas is good, and the best ratio of length and width is 8:1-10:1, and the appropriate ratio can be determined according to the terrain.

Maintain a certain slope (1 50--1 100) from the water inlet to the water outlet, which is convenient for water exchange and sewage discharge. Between the pools, the terrain can be used to classify the water drop arrangement layout. Bulk purchase of large four big fish, and then live water ** can be sold several times the price.

The difficulty of breeding is low, the cost is low, and the sales volume is good. The pH value in the water is best between, and the salinity is adjusted according to the different growth stages of rainbow trout, generally juveniles can adapt to 5-8% salinity, and adults can adapt to 30% salinity.

Rainbow trout culture is conditioned by the fact that the water must be freshwater selected from cold water that is not turbid, non-polluting and meets the standards for fishery use. In general, cave streams, springs, underground well water, reservoir bottom drainage, and clear, unpolluted river water can be used as water for water lifting.

The variation range of perennial water temperature is 5 20, and the water volume changes little and is basically constant.

Large-scale fish farming needs to apply for the "Water and Tidal Flat Aquaculture License" in the local county-level fishery department. To apply for the "Aquaculture License for Waters and Tidal Flats", it is necessary to meet the requirements of using waters and tidal flats that are not owned by the whole people for aquaculture production; It is not allowed to engage in aquaculture in waterways, harbors, and anchorages; The ownership of the water area is clear, and it meets the planning requirements of water and tidal flat aquaculture; The scale and density of breeding meet the requirements of regional breeding capacity; The scale and density of breeding meet the requirements of regional breeding capacity.

The conditions for rainbow trout breeding are mainly that the environment must be clean and thorough, and the rainbow trout must be placed what they like to eat, and the temperature is generally about 30 degrees Celsius in the weather conditions, and the sunshine must be sufficient to be suitable for breeding. In my opinion, only the southern region is more suitable for farming.

Generally, there must be enough water, and there must be more fertilizer, so that the fish can actually reproduce faster, and the growth will be better.

Preferably 12 to 18 degrees. If you are in the water, try to keep it at 16 to 18 degrees Celsius. It is best not to exceed 24 degrees.

It is best to keep it at 18 to 22 degrees. This temperature is ideal for the growth of rainbow trout. And it is also very helpful for their reproduction. Therefore, you must pay attention to the temperature when raising fish.

Generally between 12 and 18, the temperature of this water can also ensure that it can be very good during the growth process, and it is important to pay attention to the density control of the number of fish around.

It should be kept at 12 to 18 degrees Celsius, as this temperature is the normal temperature for farming, and it is also particularly suitable for rainbow trout growth and development.

Almost 12 18 This temperature is just right for the survival and development of the fish, and it should not be too high or too low.

To grasp the time of sunshine, the water tank should be ventilated frequently, pay attention to the problem of drainage, choose mineral water, feed the fish in moderation, these are the taboos of raising rainbow trout, if you want to raise rainbow trout, you must control these problems.

The density of culture should not be too large, and there should be no more than 100 fry in one cubic meter of water. It is best to breed in greenhouses to avoid bacteria from the outside floating into the water. The temperature of the water should be controlled at about 20 degrees, and the temperature should not be too low.

Rainbow trout is a freshwater fish native to northern North America and the western Pacific Ocean. It mainly lives in low-temperature freshwater, and has high requirements for aquaculture water quality. Rainbow trout is a food fish that has been transferred to many countries but has become an invasive species in some areas.

There are more than 50 professional rainbow trout farms in China, mainly in Beijing, Heilongjiang, Shandong, Shanxi, Liaoning, Jilin and Shaanxi.

Because of its excellent characteristics, rainbow trout has been introduced and cultured all over the world. The ponds where rainbow trout are kept vary in shape, but most are rectangular. The appropriate proportions can be determined according to the topography.

A certain slope should be maintained from the inlet to the outlet to facilitate water exchange and sewage discharge. The arrangement of water droplets between pools can be arranged according to the topographic classification. The construction of the fish pond can be determined according to the actual situation.

The structure of the fish pond is a brick-concrete structure, and the inner wall is smoothed with cement. Water inlets and outlets are set in the middle and upper parts of the fish pond to maintain the water level. The best water temperature in all seasons is 12-18, and the maximum water temperature in summer should not exceed 24.

It requires large flow, large flow, large breeding scale, and high yield. The flow rate of 1 liter of water per second has a production capacity of 100-200 kg. A cold-water pond fish of the genus Pacific Salmon in the salmonidae family.

Rainbow trout is an important cold-water fish species that is widely farmed worldwide. Because mature individuals have a brownish-red vertical line along the lateral line, like a rainbow. The meat is delicate, no fine thorns, and no fishy smell.

It is easy to cook and tastes great. In addition to the bones, gills, bile, and kidneys, the whole fish body is edible and nutritious.

Rainbow trout are expensive in the international market. The larval stage is dominated by zooplankton, benthic organisms and aquatic insects. Rainbow trout farming adopts high-density flowing water fish farming method, which has high scientific and technological content.

Judging from the current state of technology in rainbow trout farming, it will take more than three years to complete a commercial fish production cycle. Long production cycle and high investment. In order to achieve better economic results, it is necessary to improve the variety, increase the growth rate of rainbow trout, shorten the production cycle and reduce the cost as much as possible.

The water must not be turbid, and it must be of the standard cold or fresh water, and the second is that the water temperature should vary between 5 degrees and 25 degrees. Try to make the changes as small as possible, and in addition, you should build a shed in the pond and never mix the rainwater in it.

The breeding conditions are cold water aquaculture, and it is fresh water, the water temperature is about 7 20 degrees, and the pH value in the water should be between.

The temperature should be moderate, preferably around 13 to 18 degrees, and the water quality should be suitable for rainbow trout, and the rainbow trout should be given some nutritious food.

First, the fish pond is built and disinfected, and then the healthy fry are selected and fed. The feed is fed with pellet bait, generally 3-4 times a day for fry and 2 times a day for adults. In addition, in the process of breeding, it is necessary to screen the fish in time according to the growth of the fish to keep the size of the fish basically the same.

Finally, pay attention to the prevention and control of fish diseases.

Economic benefits of rainbow trout farming.

The economic benefits of rainbow trout are generally quite good, but the cost of its breeding is also relatively high, because rainbow trout has high requirements for water quality, so we have to spend a lot of time and labor on water quality, followed by the cost of farm construction, feed and other aspects, totaling about 100,000 to 200,000. One acre of pond can produce nearly 30,000 catties of rainbow trout, so according to the purchase price of 30 yuan a catty, then one mu of pond can earn about 1.8 million a year, excluding the cost of net profit of millions, the profit margin can be said to be quite large, and the economic benefits are very considerable.

The water quality in the mountainous area is good, and it is best to raise ** fish, and the four big fish are purchased in batches, and then the live water ** can be sold for several times the price. The difficulty of breeding is low, the cost is low, and the sales volume is good. Rainbow trout is easy to raise, and there are many rainbow trout in the tourist area of Huairou District, Beijing, and it has become a local specialty delicacy.

In mountainous areas, rainbow trout especially have high water quality as the living conditions, and the pollution-free environment of natural water has created a natural growth environment for rainbow trout.

As long as the water source is good and the amount of water is large, a stepped fish pond is built, trout is raised on the head, and sturgeon is raised in the water, because trout has higher water quality requirements than sturgeon, and the requirement is that there must be flowing water, so that the oxygen content of the water will not be low. Cold-water fish like to swim backwards, so the amount of water must be large. The particle size of the feed will not only affect the amount of food eaten by rainbow trout but also affect their taste, and will also have a great impact on the digestion and intestines of rainbow trout, so we must pay attention to the size of the fish at each stage of growth when feeding granular feed, and feed some feed suitable for them. It will not allow the fish to eat better feed and waste it, and it will also settle to the bottom of the pond in the future, which will not only increase the amount of feed we put in, but also pollute the entire ecological environment, and rainbow trout also have very high requirements for the amount of oxygen in the water. But remember not to use ice water to cool down, because this has a very serious impact on the growth of the fish, in the winter when the temperature is very low, we also need to do a good job of keeping the pond warm, if the water temperature is too low, the growth of trout will be seriously hindered.

Crustaceans, small fish and shrimp, tadpoles and terrestrial insects that fall into the water feed are fed, and they can also feed well on artificially rationed pellet feed under artificial breeding conditions. Rainbow trout have a well-developed stomach, a short intestine, and a well-developed pyloric lobe. It swims quickly, is suitable for intensive farming, and has high yields.

At present, there are more than 50 rainbow trout farms in China, distributed in Beijing, Heilongjiang, Shandong, Shanxi, Liaoning, Jilin and Shaanxi.

First of all, it is necessary to choose a suitable water source, such as spring water, groundwater. There are also suitable water temperatures, sufficient oxygen, water flow speeds, pH requirements, and salinity requirements.

Fish pond shape. Rainbow trout ponds vary in shape, but are mostly rectangular. The general aspect ratio is 8:

1--10:1, the appropriate ratio can be determined according to the terrain. Maintain a certain slope (1 50--1 100) from the water inlet to the water outlet, which is convenient for water exchange and sewage discharge.

Between the pools, the terrain can be used to classify the water drop arrangement layout. Fish pond area and depth: The construction of fish pond can be determined according to the actual situation.

Fish pond construction. The structure of the fish pond is a brick-concrete structure, and the inner wall is smoothed with cement. The inlet and outlet are located in the upper middle of the fish pond to facilitate the maintenance of the water level.

At the same time, fences should be set up at the entrance and exit of the water to prevent fish from escaping.

The water quality is clear, warm in winter and cool in summer, the water quality is stable, and the groundwater without debris can also be used, but it must be exposed to the sun before use. The temperature of the growing water should be controlled between 7-22 as much as possible, and the oxygen in the water should be sufficient.

It is best to keep it between 18-22 degrees. This temperature is ideal for the growth of rainbow trout. And it also contributes a lot to their reproduction. Therefore, you must pay attention to the temperature when raising fish.

Rainbow trout is rich in nutrition, tender and soft, has a high demand in the market, and has the characteristics of short growth cycle.

However, rainbow trout are very sensitive to feed in the process of breeding, so what type of feed is generally used to feed rainbow trout? Rainbow trout is rich in nutrition, tender and soft, has a high demand in the market, and has the characteristics of short growth cycle.

However, rainbow trout are very sensitive to feed in the process of breeding, so what feed is generally used to feed rainbow trout?

1. Feed requirements.

Breeding rainbow trout requires that the feed must be fresh, nutritious and comprehensive, and can be prepared with energy feed, protein feed and added feed.

When the feed is preserved, we must pay attention to moisture-proof and mildew, and once the feed is found to be deteriorating, it should be eliminated in time.

2. Feed type.

1) Energy feed: The energy feed of rainbow trout mainly includes rice bran, corn bran, sorghum bran, wheat bran, soil surface, starch factory scraps, grain processing plant sieves, honey, oil, etc.

2) Protein feed: feed adult fish with the best protein content of 40%, and the best fat content of 6%-12%.

3) Add feed: mainly fish with a variety of vitamins, minerals, bone meal, shrimp and crab shell powder, fermented blood meal, etc., some farmers in order to prevent fish diseases, will also add a small amount of antibiotics. Grip position.

3. Feed feeding.

1) Pay attention to adjusting the amount of feeding.

Farmers should increase or decrease the amount of feeding according to the change of water temperature, the water temperature and the amount of feed of the rainbow trout are related, the water temperature is high, the rainbow trout eats more, and the opposite feeds less.

When the water temperature is above 10, the feeding amount can account for 3%-4% of the total weight of the pond rainbow trout.

2) Pay attention to the selection of pellet feed with different diameters.

Rainbow trout of different sizes should be fed pellets of different diameters.

Generally, rainbow trout with a body length of 4-6cm are fed pellet feed with a diameter of millimeters; Rainbow trout with a body length of 7-8 cm are fed pellet feed with a diameter of 3 mm.

3) Pay attention to vitamin supplementation.

During the production of pelleted feed, vitamins are destroyed.

Therefore, if farmers feed rainbow trout with pellets, they should be fed a small amount of vitamin-rich green feed to supplement the deficiency of vitamins.

In fact, the prospect of breeding rainbow trout is still very impressive, and the feeding of feed will directly affect the taste of rainbow trout, so farmers must pay attention to it.