CATDOLL : CATDOLL: What should be the density of rainbow trout farming?

1. What should be the density of rainbow trout farming?

What should be the density of rainbow trout farming?

The stocking density is 1600/O.

Rainbow trout farming precautions:

The rainbow trout has a flattened body with a large, obliquely cleft, terminal mouth. The snout is rounded and blunt, with fine teeth on the upper jaw. The dorsal fin is short at the base, and there is a small adipose fin behind the dorsal fin. The pectoral fins are medium-sized and slightly pointed at the end. The pelvic fins are small and far away from the anal fin. The scales are small and round. The back and top of the head are blue-green, yellow-green and brown, and the sides and abdomen are silvery white, white and grayish white. There are small black spots irregularly distributed on the head, sides, back and fins.

Water is a prerequisite for rainbow trout farming. The water used for farming should be flowing cold water, with a water temperature below 22℃ all year round and no ice in winter. The water quality should meet the standards for fish farming and be clear and pollution-free. Such water sources include mountain springs, mountain streams, underground water, reservoir bottom drainage, snow mountain meltwater, etc.

The water used for trout farming must have a certain flow rate. Usually, the number of fish that can be raised is calculated based on the water flow rate. Under normal circumstances, the trout production of 1 liter of water per second is about 50-200 kg. The water in the flow pool must have a certain flow rate, generally between 1.2-1.8 meters per minute. The flow rate of water for raising juvenile fish should be smaller, and the flow rate of water for growing fish and cultivating parent fish should be slightly larger.

The water quality for breeding rainbow trout must be ensured to be clear. If suspended matter in the water falls on the fish gills, it may cause difficulty in breathing for the rainbow trout. While ensuring the cleanliness of the water quality, the pH value of the water in the pond must also be controlled. The pH value range most suitable for the growth of rainbow trout is 6.5-6.9. As rainbow trout continue to grow, their ability to adapt to the salinity of the water will continue to increase. Juveniles can survive and grow in water with a salinity of 0.5-0.8%. Fish weighing more than 35g can adapt to seawater after a transition to semi-salt water.

Rainbow trout is a cold-water fish, which is deeply loved by consumers for its golden skin and tender meat. Rainbow trout like to move in groups, swim very fast in the water, and are ferocious when feeding. Groups of fish often jump out of the water to compete for food. They have high requirements for water quality and water temperature. The water temperature for farming rainbow trout is best kept at around 7-18℃. Water temperature that is too low or too high will cause the death of rainbow trout.

The stocking density of trout has a certain relationship with the size of the fish body. When the size of the fry is 1 gram, the stocking density is about 1600 fry/O; when the size of the fry is 10 grams, the stocking density is 800 fry/O, and so on.

The density of rainbow trout farming is related to the size of the fish. The density of small fish is about 600 to 1,600 per square meter, and the density of adult fish is about 400 to 200.

The stocking specifications of fry are determined by the breeding time, water temperature and the planned market weight, usually between 80 and 120g/fin. The stocking density of fry is restricted by factors such as water volume, water temperature and dissolved oxygen in the water. Usually 1.6 to 2.2kg/cubic meter of water is appropriate. The fish pond load should ensure the dissolved oxygen at the drain outlet.

2. Where to buy golden trout fry and how to sell them?

I'm from Danfeng, let me tell you, there are four companies approved by the Shaanxi Provincial Fisheries Administration.

1: Shaanxi Province Xinmin Aquatic Breeding Farm

2: Xi'an Fish Fry Breeding Farm (Liubao Village, Luan Town, Chang'an District)

3. Dali Yuhong Aquatic Breeding Farm

4. Huayin Yellow River Carp Seed Farm. You can look up the address online. I know of another one, Liubao Village, Luan Town, Chang'an District, Xi'an City.

Tel: 85860335

I don't know where Xinmin is. I think it's in Hanzhong.

If you want to buy it, I suggest you go to Xi'an

The highway is open to traffic and you can reach it in a few hours.

I really don't know if you want fry or fingerlings.

3. How to put the fry into the pot

Hello, click My Items --> Fish Fry --> Select the fish you want to raise --> Click your pond and you can release the fish.

4. Question: Which province near Guangdong Province has a supply of red trout fry?

This kind of fish should not be found in Guangdong Province, because this trout needs to grow in cold water, and the temperature in Guangdong is obviously not enough for trout to survive.

5. The cost and profit of breeding are very important. How much does it cost to breed rainbow trout?

There are many aquatic projects, such as fish farming, shrimp farming, turtle farming, shellfish farming, etc. And there are profitable aquatic product projects in each category. As for the amount, it depends on the market, research and analysis, and farmers' understanding of the project in terms of technology and market. Sand tang snakehead, commonly known as "four-in-one", is a small freshwater carnivorous fish. It has delicious meat, rich nutrition, can nourish the body, control water, and has high edible value and market value. In the past, artificial breeding was rare, and the market supply was in short supply, with a wholesale price of 178~198 yuan/kg. Now the main method of breeding sand tang snakehead is mixed breeding, with an output of about 268 kilograms per mu. The minimum wholesale price is 178 yuan/kg, and the output value per mu can reach 47,704 yuan. The breeding cost is close to 20,000 yuan, and the profit margin can reach 27,704 yuan. And this does not increase the profit of other varieties of mixed aquatic products.

More importantly, turtle farming is not only profitable, but also easy to manage. Take the breeding of a pair of turtles as an example. Simply build a pool. Then introduce 4 types of turtles, each turtle costs an average of 400 yuan, and requires an introduction fee of 1,600 yuan. If the feed cost is added, the average cost of each turtle is no more than 20 yuan a year, so the feed cost of the four turtles is 80 yuan a year, plus management, water change, manpower and other costs. The total cost of breeding for the whole year is 2,000 yuan. A female turtle can produce about 8 turtles a year, and three female turtles can produce 24 turtles a year. The average price of each turtle is 70 yuan, and the output value is 1,776 yuan. In the first year, it lost 224 yuan. But in the second year, it began to make a profit. The output value is 1,776 yuan, and the cost is only feed and water and electricity, about 150 yuan. The profit can reach 1,626 yuan. Breeding 100 groups of turtles, the annual profit can reach 162,600 yuan.

It is one of the four excellent freshwater aquaculture varieties in the world and is very popular in the market. At present, the world's demand for rainbow trout is about 5 million tons, while the annual output is only Cold-water fish are living fossils in the water. In China, there are many kinds of cold-water fish and rich resources. After more than 50 years of development, the cold-water fish industry has begun to take shape. If you want to enter this industry, you need to understand the prospects of cold-water fish farming. What is the method? 1. The concept of cold-water fish is proposed by people based on the living habits of fish. It usually refers to fish living in waters of 18℃-23℃. Cold-water fish mainly include cold-water salmon and trout, sub-cold-water sturgeon and schizothorax. What is the prospect of cold-water fish farming? 1. The living environment of cold-water fish is relatively high, and most of them live in clean and pollution-free waters, which determines their pollution-free product characteristics. Free-growing cold-water fish have tender meat, no intramuscular spines, rich in unsaturated fatty acids such as EHA and DHA, high nutritional value and high economic value.

At present, the available flow of cold water resources in my country exceeds 5,000 cubic meters per second, and the potential for cold water fish farming exceeds 500,000 tons. The annual output of salmon and trout farming accounts for only 8% of the available resources. China's cold water resources are mainly distributed in the Northeast, Northwest, North China and Southwest regions. Relying on local natural resources and rationally developing the cold water fish industry is of great significance to poverty alleviation and the development of modern fisheries. The financial departments of many regions, based on local actual conditions, combine industry poverty alleviation. Local farmers can also attract investment based on local natural advantages. For example, Jiangkou County is located in the southeast of Fanjing Mountain, a karst mountainous area with rich cold water resources and good water quality, which is very suitable for breeding cold water fish. By the end of 2017, 12 places had been developed and utilized, 12 bases had been built, with a breeding area of ​​5,000 mu and an output of 3,100 tons.

Cost index: less than 4,200 yuan per mu (less than 14 yuan per kilogram of fish), including:

1. Disinfection and pond cleaning fee: 100 yuan/mu;

2. Fish fry: 250-300 yuan/10,000 fish, 900 yuan/mu for 30,000 fish;

3. Feed: The feed coefficient is 2.2-2.3. Self-prepared feed is used. The feed cost is 1980 yuan per mu, calculated at 3 yuan per kilogram of feed.

4. Other expenses: 920 yuan/mu, including: electricity fee 150 yuan/mu; pond rent 600 yuan/mu; large fish seedlings: 70 yuan/mu (40 per mu, 0.25 kg/fish); helpers and depreciation 100 yuan/mu.

You need at least hundreds of thousands of yuan, because nowadays, without hundreds of thousands of yuan, you basically can’t do any business, especially the breeding business, the threshold for breeding business is relatively high.

I think it will cost at least several million, because there are relatively few farmers raising this kind of fish, so a relatively large scale is needed.

The breeding cost of one acre of pond is about 100,000 to 200,000 yuan, not including the fry. If the fry are included, it will be about 300,000 yuan. At the same time, other costs must also be considered. For example, if there are many acres of ponds, the cost will be higher.