CATDOLL : CATDOLL: Clams are a common seafood. What are the techniques for farming clams?

1. Clams are common seafood. What are the techniques for cultivating clams?

Clams are hermaphrodites and generally reach sexual maturity in two years. The gonads of sexually mature clams are distributed around the visceral mass and extend to the base of the foot. The female gonads are milky white, while the male gonads are light orange (or creamy yellow). The eggs are spherical, with a diameter of about 70-90 microns, and a layer of gelatinous egg membrane outside the eggs. The sperm is narrow cocoon-shaped and about 3 microns long. Its meat is extremely delicious and is known as the best in the world and the best of all flavors. It is also relatively nutritious. It contains protein, fat, carbohydrates, iron, calcium, phosphorus, iodine, vitamins, amino acids, taurine and other ingredients. It is low in calories, high in protein, and low in fat. It can prevent and treat chronic diseases in the middle-aged and elderly. It is a good and cheap seafood. The oldest clam found so far is 507 years old (unfortunately, the researchers killed it during the study). In addition, clams are also known as one of the five immortal beasts on earth.

The breeding season of clams is in early summer, which varies with species and regions. The spawning period in Liaoning and Shandong is from July to August, in Jiangsu, Zhejiang and Fujian from June to July, and in Guangdong and Guangxi from May to July. The surface temperature of seawater during the spawning period is about 27-29℃.

The suitable water temperature for clam embryonic development is 24.9-31.4℃, preferably 26-28℃, the suitable seawater specific gravity is 1.010-1.025, preferably 1.015-1.025, the suitable temperature for larval growth and metamorphosis is 24.9-31.0℃, and the suitable specific gravity range is similar to that of embryonic development; when the bait is fresh, abundant, and of good quality, the larvae are large and metamorphosis is early, the main purpose is to cultivate the biomass of bait in the pond. In early spring, fresh small fish and shrimp paste is used to fertilize the water and increase the amount of organic debris in the pond; compound fertilizer and organic fertilizer are used to fertilize the water on sunny days in summer and autumn; soybean milk is used to fertilize the pond in late autumn and winter.

The bottom suitable for the survival of clam seedlings requires a sand content of more than 75% (all sand is best); the seedlings are highly adaptable to low-density seawater, and can still survive and grow when the seawater density drops to 1.003-1.005 in a short period of time. The growth rate of seedlings in natural sea areas is faster than that of artificial seedlings. Use quicklime (10kg/mu) or chlorine dioxide (0.125kg/mu) and other drugs to disinfect water bodies and prevent diseases every other month.

Choose a place near a beach with a lot of sand, a relatively flat place with good air circulation for breeding. When selecting seedlings, pay attention to the uniform size of each batch of clam seedlings and the lack of damage on the shell. When breeding seedlings in summer, add oxytetracycline to the water to prevent diseases.

1. The breeding water environment is very strict, the water temperature must be suitable, and the water needs to be changed regularly to ensure that there are no problems with the water quality; 2. Sampling and testing should be carried out every month to check the growth of clams and supplement their nutrition; 3. Nutrients are very important. You can use fresh small fish and shrimp paste to sprinkle the entire pond to fertilize the water and increase the amount of organic debris in the pond. You should also supplement it with appropriate compound fertilizers.

Choose a flat, pollution-free, high-sand tidal flat. The sowing time depends on the size of the seedlings. Generally, the seedlings are in April-May, the medium seedlings are in December-the following spring, and the large seedlings are before spawning. Both dry sowing and wet sowing are possible.

1. To cultivate clams, the first thing to do is to choose a place. This place must be clean and must be disinfected before stocking.

2. The time for sowing seedlings is also important. It is best to choose April or May as the survival rate will be higher.

3. Disease prevention and control is also very important. During the hot summer weather, clam diseases are most prevalent, and the breeding areas must be disinfected regularly.

2. High-scoring question: What is the current market purchase price and market selling price of mud clams?

Clams are widely distributed in the southern and northern seas of my country. They grow quickly, have a short breeding cycle, are highly adaptable (wide temperature, wide salt, and wide distribution), and can survive out of water for a long time. They are a fine shellfish suitable for artificial high-density breeding and one of the four major farmed shellfish in my country. Hainan, Guangxi, Guangdong, Fujian, Zhejiang, Jiangsu, Shandong, Hebei, and Liaoning are all farmed to some extent in coastal provinces and cities.

The wholesale price of finished clams is generally 2.5-5 yuan/jin for 80-30 pieces/jin, and the market retail price is generally 120-150% of the wholesale price, while the production price of farms is generally 90% of the wholesale price. These cannot be found on the Internet, and even if they are found, they may not be accurate, not to mention newspapers and magazines. Liaoning and Shandong have the most finished products, and the price is a little cheaper than in the south.

Since only Fujian has a climate suitable for the cultivation of clam seedlings, a large part of the clam seedlings are artificially cultivated in Fujian. Xiawei Village in Putian City is a nationally famous "Clam Village". From March to July every year, there are 10,000 to 20,000 tons of clam seedlings supplied, with specifications of 1,000 to 10,000 grains per catty, totaling more than 100 billion grains. Xiawei's supply of clam seedlings ranks first in the country. From March to July 2007, the price of 3,000 to 10,000 clam seedlings per catty was about 4 to 8 grains per cent.

Clam farming is incredibly profitable!

Purchase price, market wholesale and retail price of mud clams in Fujian or Zhejiang

Specifications: 70-80 pieces/catties,

3.4 yuan

50-60 pieces/catties,

3.9 yuan

40-50 pieces/catties.

4.4 yuan...

Wholesale price 80-30 grains/catties 2.5-5 yuan/catties

The retail price is about 3.6 to 7.2 yuan per pound. If you need it, please leave your contact information so that I can contact you.

50-60 pieces/catties Purchase price: 10 yuan

Sales: 15 and above

You can find out more on our Guangzhou Huangsha Aquatic Products Wholesale Market website!

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