How to breed herring, how to breed herring Is herring easy to raise?

In fact, this is largely determined by the demand of the market, the consumer group of herring is not large, on the one hand, because the size and weight of herring is too large, plus many consumers because of the herring is too expensive and dispel the idea of buying, resulting in the sales of herring is not much, in addition, the breeding cycle of herring is much longer, it is not cost-effective for farmers to breed. Because the growth rate of Qingyu fish is very slow in the early stage, waiting for it to grow up means that more money needs to be invested, and the payback time is extended, and the risk borne by farmers is higher. For these reasons, there are not many farmers who are willing to raise herring.

Because the growth cycle of herring is long, the market demand is relatively small, and the risk of herring farming is too high. Herring is a carnivorous fish, within three years because of its small size, can not swallow large aquatic organisms, small fry can not eat, so can not grow quickly, three years later will grow rapidly, five or six years later into the market, such a long growth cycle, is a great test for farmers.

Because the breeding cycle is too long, the herring has to grow to a large time before it can be put into the market, which means that fish farmers have to spend more time, and farmers are not very willing to raise fish with too long return cycle.

Because you don't have a place to farm.

There are people in the fishing grounds, because there are people who go fishing, and few people buy them in the market, so there are few people who raise them!

1. Selection of breeding waters.

The herring aquaculture waters should be selected in the waters with good ecological environment, sufficient water sources, and no or no slag that is not directly polluted by industrial wastes and agricultural, urban and medical wastes.

There are no pollution sources that pose a threat to the aquaculture water environment in the aquaculture waters, as well as in the upwind direction and upstream of the irrigation water sources.

2. Remove excess silt from the pond.

Silt is composed of biological carcasses, leftover bait, feces, various organic detritus, and various organic matter and mud deposits.

They are continuously dissolved and released into the water through the decomposition and ion exchange of bacteria, providing nutrients for the reproduction of bait organisms.

However, too much silt will produce a large amount of hydrogen sulfide, methane, organic acids, lower amines and mercaptans, etc., which accumulate in the water and affect the health and growth of herring. Therefore, excess silt should be removed.

The specific measure is to drain the pond water every one or two years, dig out too much silt, and keep about 20 cm of silt at the bottom of the pond. At the same time, the bottom of the pool is exposed to the sun and frozen, killing pests, parasites and disease-causing bacteria.

3. Disinfection of pond water bodies.

To improve the pond environment, eliminate predators, prevent some bacterial diseases, and disinfect ponds and water bodies.

Commonly used disinfectants and their dosages are as follows: use quicklime with a content of 200 mg and 250 mg per liter to clear the pond, or sprinkle the whole pool with quicklime water with a content of 20 mg and 25 mg per liter; Use 20 milligrams per liter of bleaching powder to clean the pond with water, or splash the whole pool with a content of milligrams per liter of bleaching powder water; Sprinkle and disinfect the whole pool with a sodium dichloroisocyanurate solution with a content of 0 milligrams per liter and 3 milligrams per cluster; Or sprinkle the whole pool with a content of milligrams per liter of trichloroisocyanuric acid solution for disinfection.

4. Water quality management.

The water environment is the basis for the herring to live and grow in the pond, and various fish farming measures are also applied to the fish body through the environment.

Therefore, water such as Zheng Pai quality management is a bridge for pollution-free herring farming. It is necessary to ensure that the pool water has a large amount of plankton, rich in organic matter and nutrients; The transparency of the pool water should be kept between 25 cm and 40 cm.

The amount of dissolved oxygen in the water is more than 4 mg, the pH value is , and the water quality meets the requirements of fertilizer, live, tender and refreshing.

Although herring is one of the four major fish, can you raise a few at home? Is herring good or not, can it be raised, and how should it be raised? Do you know all of this? Here I will solve the puzzle for you, how should herring be farmed?

How to breed herring.

1. Pond conditions.

It is better to choose sufficient water sources, convenient drainage and irrigation, no pollution sources, ventilation to the sun, and convenient transportation. The water quality is good, and the transparency is 30-40cm. In the fingerling breeding and adult fish breeding ponds, a food field (or a food table should be built), and the food field should be flat, free of silt, and kept clean and hygienic all year round.

2. Fish fry cultivation.

5-7 days before the seedlings apply 6000-7000kg hectares of green manure or 3000-4000kg hectares of manure, organic fertilizer should be fermented, rotted, and disinfected with 1-2% lime, fertilization 2-3 days after the water will be deepened to rice, 5 days after deepening to rice, water should be filtered with a dense net.

3. Stocking of fish fry.

Choose the upwind place in fine weather, put out the film for 5-7 days, stocking density of 100-1.5 million hectares, pay attention to the temperature difference does not exceed 2.

Fourth, feeding management.

Soybean milk on the 1st to 10th day, of which 30kg hectares in the first 5 days, 40kg hectares in the next 5 days, increase as appropriate after 10 days, 2 times a day, and sprinkle evenly throughout the pool. Add 15-20cm of water every 5-7 days until the summer flowers come out of the pond and add to the depth of rice. According to the water quality of the cultivation pond, apply the appropriate amount of top dressing.

After about 25 days of cultivation, the fry should be sparsely divided into ponds, and 2-3 intensive exercises should be carried out before leaving the pond.

5. Prevention and control of fish diseases.

Fingerlings are strictly disinfected before stocking, and after being put into the pond, the whole pond is splashed once with 1g m3 crystal trichlorfon, and then regularly disinfected with 25ppm quicklime and 1ppm of bleaching powder, and regularly fed drugs to prevent enteritis; The bait is fresh and palatable; Dead fish should be fished out in time, buried deep in the soil, and the fishing gear used should be soaked and disinfected.

How long is the lifespan of a herring.

Generally, the lifespan of herring is more than 20 years, and the 5-year-old (1-year-old is 1-year-old) herring will become an adult, and it will grow very quickly every year, and when it reaches about 20 years old, it will be old, and the growth rate will slow down.

The practice of watercress herring.

Ingredients: 400g herring, appropriate amount of bean paste, appropriate amount of green onion, two cloves of garlic, appropriate amount of ginger, appropriate amount of sugar, appropriate amount of vinegar, appropriate amount of salt.

Method] 1. Do not remove the head of the herring, remove the internal organs, wash it clean, and wipe the water on the surface.

2. Cut the green onion into large sections, slice the ginger, and pat the garlic loosely with a knife.

3. Pour oil into a frying pan, and fry the herring on both sides after the oil is hot.

4. Slide the fish to the side of the pot and pour an appropriate amount of bean paste into the vacated area and stir-fry until fragrant.

5. Wrap the fried bean paste evenly on the herring and fry it for a while.

6. Add green onion, ginger, garlic, sugar, vinegar and a little salt.

7. Add an appropriate amount of water to simmer, and when the soup is thick, turn off the heat and remove from the pot.

Nutrients of herring.

Herring is a high-protein, low-fat food with a protein content and a fat content. In the amino acid composition, it is rich in umami components such as glutamic acid and aspartic acid, so it tastes delicious.

1. Breeding pond: Generally speaking, herring is raised in a large area and can be used as an economic fish culture. Therefore, a breeding pond is needed, and the herring should be disinfected before being put in.

The location of the breeding pond also needs to be paid attention to, and try to choose a place with a good ecological environment and sufficient water sources. Also, it is better to be upwind as well as upstream of the water source.

2. Feeding: Breeding herring should be fed regularly. Generally speaking, it can be done twice a day, once at 8-9 a.m. and once at 2-3 p.m.

They can be fed some fish, shrimp and other meat, or they can be fed special feed. Rationing should be given at each feeding, and it is best to let them finish within hours and not overfeed them.

3. Water quality: When breeding herring, water quality is also an important factor. In general, it is best to keep the transparency of the water between 25-40 cm. If the water quality is relatively turbid, the water can be changed appropriately.

4. Oxygenation: Herring also has requirements for the amount of dissolved oxygen in the water. If the oxygen content in the water is insufficient, artificial oxygen can be used to supplement part of the oxygen.

5. Disease prevention and control: herring fish are sometimes more likely to get sick. Especially when the herring is still relatively young, it is more likely to get "hemorrhage", and 2-year-old fish are more likely to get "gill rot" and other diseases.

It is necessary to prescribe the right medicine according to the types of these diseases, and prevent and treat them in a timely manner to avoid further expansion of the harm.