Culture Technology of Salmon "Treasure in Water"

Salmon originally refers to Atlantic salmon, but now Pacific salmon is also called salmon. It is often found in western and Japanese food and tastes delicious. So, what are the culture techniques for salmon? Let's get to know it together.

I. Culture conditions

1. The structure of culture pond

The aquaculture pond adopts the cement floor structure of the shed, and the roof is covered with plastic sheet. each cement pool in the shed has an area of 100 square meters, a depth of 1.5-2.0 meters, an inlet above the cement pool, a drain below, and a sewage ditch in the middle of the bottom to facilitate sewage discharge.

2. Water source

It is best to use underground deep well water, the quality of deep well water is better, if the iron content in the water is high, it should also be equipped with a set of tower aeration iron removal equipment, it is worth noting that the water quality analysis should be done before the water source is used.

3. Inflatable and power generation equipment

7-10 kilowatt blower is used for inflation, in addition, prepare another inflator for backup, in order to avoid power outage, we should also prepare a set of generator sets.

Second, preparation before stocking

For the new cement pool, after soaking in water for 2 months, it can only be used for breeding after disinfection with germicides, and the old cement pond should also be disinfected and disinfected with germicides 10 days before seedling stocking, with a water depth of about 1 meter.

3. Stocking of seedlings

There are 40-50 Pacific salmon with a stocking specification of 30-50g per cubic meter of water. after five months of breeding, the tail weight can generally reach 900-1000g. General salmon can be put on the market after half a year, and fish species can be stocked in April in spring.

IV. Feed feeding

The pellet feed is domesticated and fed with a crude protein content of 42-45%. When the water temperature is below 8 ℃, it is fed twice a day, once in the morning and once in the afternoon. When the water temperature is 8-15 ℃, it can be fed three times a day and once at noon, 80% full each time, and not too much.

V. Control of water temperature

Because Pacific salmon is a cold water fish and has strict requirements on water temperature, the best growth water temperature is 13-15 ℃, while the well water temperature is about 8 ℃, so it is necessary to regulate the water temperature to meet the growth conditions. during the feeding period, two methods can be adopted to control the water temperature. One is to cover the scaffolding with plastic sheeting to increase the water temperature when the air temperature is low in early spring and late autumn, and the other is to remove the plastic sheeting in summer when the temperature is high. By increasing the exchange capacity of well water to reduce the temperature of the pool water, through the above two methods, the lowest water temperature is not less than 5 ℃, the highest water temperature is not more than 15 ℃, and the spring and summer water temperature can be kept at 13-15 ℃.

VI. Water quality regulation

During the breeding period, we should pay attention to the water quality of the pool water, which is the key to culture fish, keep the pond water fresh, discharge sewage regularly, often change water, and flexibly master the number of times and quantity of water change according to the changes of water temperature and water quality. in terms of oxygen, use blower to increase oxygen to the pool water uninterruptedly, only when feeding bait can stop the gas supply, and the dissolved oxygen in the pool water should be kept above 8mg/L, so as to improve the survival rate of salmon.

VII. Prevention and control of fish diseases

Salmon culture should adhere to the principle of giving priority to prevention, do a good job in the prevention and control of fish diseases, and disinfect the pond water with formalin and eel Jing during the culture period, using the method of sprinkling the whole pool once a month. Formalin is used for 20 g per cubic meter of water and 0.5 g for eel net water.

The above is the salmon culture technology that Xiaobian arranged for you. I hope I can help you!