Bighead Carp Price Per Jin, Stocking Density Per Mu, and Farming Techniques
Bighead carp, also called bighead carp, spotted silver carp, fathead carp, black silver carp, yellow silver carp, pine fish, yong fish, bighead silver carp, and whale fish, is one of China's famous "Four Major Domestic Fish." So how much does it cost per jin? How much can it grow in a year? How many to stock per mu? What are the farming techniques? According to the Hunan Changsha Mawangdui Vegetable Wholesale Market, the current price of bighead carp is around 15.5 yuan/kg.
How much can a bighead carp grow in a year?
Bighead carp grow faster than silver carp. In natural rivers, lakes and other water bodies, individuals over 10 kg are commonly seen, and the largest can reach 50 kg. They are suitable for farming in fertile ponds. With sufficient feed, a 1-year-old fish can weigh 0.8-1 kg. The age of sexual maturity is the same as or slightly earlier than that of grass carp. In most areas, the weight of first-maturing individuals needs to be over 10 kg, but in the Guangdong and Guangxi regions, brood fish of usually less than 10 kg can also spawn. The induced spawning season is mostly from early May to mid-June, and other reproductive ecological conditions are roughly the same as those of silver carp.
How many bighead carp to stock per mu?
Generally speaking, no more than 100 large-size fingerlings should be stocked per mu. It is best to buy sub-market-size fish of over 1 kg before the Spring Festival when bighead carp prices are low, and raise them intensively with special bighead carp feed. By the following summer, they can grow earlier into large-size market fish of over 2.5 kg and be sold at the right time. If the main method is fertilizing the water and feeding bran and rice bran as a supplement, it is also relatively easy to raise them to about 2 kg. After the market fish are sold, the vacated pond can be used to raise another crop of fingerlings. Of course, if large-size bighead carp fingerlings are readily available, the next round of production can also be started immediately, so that two crops can be produced in one year or three crops in two years. Although the yield of this stocking model is not high, the investment is not large and the benefits are very stable.
What are the farming techniques for bighead carp?
1. Fingerling stocking:
In the past, the stocking size of bighead carp in lakes and reservoirs was generally large-size fingerlings of about 13.2 cm. Under modern technical conditions, large-size fingerlings of 0.15-0.5 kg each, or even 1.0 kg, are required.
2. Stocking time:
It should be carried out in winter or early spring when the water temperature is 5-10°C. At this time, high-density transportation of fingerlings is more favorable, which can reduce losses during transportation. The activity of fingerlings and predatory fish is weakened, and the harm of predatory fish to stocked fingerlings is also relatively reduced.
3. Stocking location:
It should be chosen in shallow, wind-sheltered, sunny and fertile reservoir bays in the upper reaches of the reservoir. In this way, being far from the spillway and flood discharge tunnel in the lower reaches of the reservoir, the chance of escape of stocked fingerlings can be reduced, the adaptation time to the large water environment can be shortened, growth can be accelerated, and the survival rate can be improved.
4. Stocking weather:
It should be chosen on a sunny and mild day. Do not stock on days with strong winds, snow, or ice.
5. Quarantine and disinfection:
Before the fingerlings are stocked into the reservoir, fish disease quarantine and fingerling disinfection must be carried out. It is strictly forbidden to stock fingerlings carrying infectious diseases into the reservoir.
6. Careful operation:
After fingerlings have been transported over a long distance and arrive at the reservoir, reservoir water should first be slowly added to the fish container. When the temperature difference between the water in the container and the reservoir water is not large, the fingerlings should then be slowly released into the reservoir. After the fingerlings are released, the stocking personnel should also stand at the reservoir edge or on a boat, gently stir the reservoir water with an oar, and slowly drive the fingerlings to swim toward the open water.
Appendix: Nutritional analysis of silver carp:
Silver carp can provide rich gelatinous protein, which can both strengthen the body and beautify the skin, making it an ideal food for women to nourish the skin. It has therapeutic effects on rough skin, peeling skin, dry and brittle hair prone to falling out, and other conditions, and is a delicacy that women should not ignore for beauty. As a health food that warms the middle, tonifies qi, warms the stomach, and improves the skin, it is suitable for people with a cold-deficient spleen and stomach constitution, loose stools, and dry skin, and can also be used for conditions such as insufficient lactation caused by spleen-stomach qi deficiency.
Suitable groups for silver carp:
Generally, all people can eat it, but those with accumulated heat in the spleen and stomach should not eat it. People with itchy skin diseases, internal heat, hives, or ringworm should avoid eating it.
Dietary therapeutic effects of silver carp:
Silver carp is sweet in taste and warm in nature, and enters the spleen and stomach meridians.
It has the effects of strengthening the spleen and tonifying qi, warming the middle and warming the stomach, and dispelling heat, and is especially suitable for eating in winter.
It can treat symptoms such as weak spleen and stomach, reduced appetite, emaciation and fatigue, and diarrhea. It also has effects such as warming the stomach, tonifying qi, improving the skin, darkening the hair, and nourishing the complexion.