How much is tuna per jin? With picture overview
Tuna is called different names in different places, and it is a relatively large fish with edible value. Because its meat is delicious and highly nutritious, many people began to catch them for sale, causing their wild numbers to become fewer and fewer, so now some places have also begun artificial farming. So what is the price of tuna per jin? What are the key points of artificial farming? With pictures.
1. What is the price of tuna per jin?
The price of tuna is relatively expensive compared with ordinary fish, and the price also varies according to the part, ranging from 400 to 1200 yuan per kilogram, that is, the price of tuna is about 200 to 600 yuan per jin. Tuna prices differ in different fishing periods and different port areas.
2. Key points of artificial farming of tuna
1. Farming preparation
The farming of tuna is relatively complicated, and the current artificial farming technology is not yet perfect, so full preparations must be made before farming, otherwise it is very difficult to keep them alive. Tuna is mainly farmed through cages. First, we must choose cages with good texture, then choose suitable waters, then disinfect and place the cages, and also establish a red tide warning in the selected waters, and finally we can choose the fry.
2. Fry selection
Tuna fry are relatively precious, and because of the problems with farming technology, we should be even more careful. When choosing fry, we should carefully observe whether the body shape, scales, gills, fins, eyes, tail, belly and other parts of the tuna meet the standards (for specific standards, please consult), and then put food in to see their feeding situation, and choose robust fry without disease for farming.
3. Stocking fry
Before stocking, we need to disinfect and sterilize the tuna, because no matter what, the purchased fry will always carry more or less bacteria. If directly stocked, it will pollute the water quality and cause all the fry to be harmed, so at the beginning they can be soaked in a special tuna disinfectant for about one hour, and after the bacteria are cleaned up, they can be put into the cages for farming.
4. Feeding management
Tuna is a relatively delicate fish. Although its taste is excellent, it is not easy to keep alive, so feeding management is also very important. We need to understand the living habits of tuna and reasonably choose bait according to how much tuna likes the food, and then put feed in a fixed place at irregular times every day. Generally, feeding about three times a day is enough.
If the selected feed is reasonable and the farming method is scientific, then artificially farmed tuna will grow at least about twice as fast as wild ones, so its growth cycle is greatly shortened, which is also an advantage of artificial farming of tuna.
5. Daily management
The daily management of tuna mainly includes water quality management in the farming area, sanitation management of the cages, management of pests and diseases, and prevention of natural disasters. Tuna has very high requirements for water quality, so we must frequently inspect the water quality around the farming area and purify the water quality in time when pollution sources are found.
At the same time, tuna also has very high requirements for its living environment. We need to clean and disinfect the cages irregularly, and then promptly remove the food residue in the water after feeding to avoid polluting the water quality. For tuna, the prevention and control of pests and diseases is mainly based on prevention, and an appropriate amount of antibiotics can be added to the feed. The prevention of natural disasters requires us to always pay attention to weather changes and adjust the cages in time.