Ding fish year old
Dingfish, also known as blackfish, is distributed in Europe, to the Ob and Yenisei rivers in the east, and is only found in the Ertix River and Ulungu River basins in China. Dingyu is also one of the main freshwater farmed economic fish in European countries, and it is known as the royal pet fish in Europe. There are many kinds of fish in the genus fish, and the fish age is of the most economic value, which is one of the more famous fish in China. The fish is coarse-bred, omnivorous, cold-resistant, disease-resistant, easy to transport over long distances and well accepted by the market. The meat quality of this fish is so delicious that its unsaturated fatty acid is 3 times higher than that of other freshwater fish. The fish is a benthic fish with mixed feeding habits and feeds on plant residues and aquatic insects. The formula feed can be eaten, and it has great adaptability to the change of dissolved oxygen in water. Strong resistance to low temperature in winter, can drill into the mud to survive the winter. The fish has only been developed and utilized in recent years. In just two years of introduction in Guangdong Province, there has been a sudden rise of a new force, the speed of aquaculture and promotion is very fast, and it has formed a major variety industry of freshwater aquaculture. However, in Zhejiang Province, the fish culture should be in the ascendant, the prospect is promising, if we can open up other provinces or even foreign markets, its development prospects are still very considerable. Its disadvantage is that the growth rate is slightly slower.
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Prevention and treatment of snakehead snakehead disease
(1) pathogenic fish carp. (2) after the symptomatic diseased fish are parasitized by fish fish, they are extremely restless, swim wildly, jump wildly, increase body surface mucus, and are easy to be complicated with water mildew disease, which do great harm to fish species and can cause a large number of diseased fish to die in serious cases. May to September every year is the peak season of the disease. It is a common disease of snakehead. (3) the whole pond was sprinkled with 0.4 × 0.000001 fish and insect cleaning.
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Production of shrimp paste and products
Shrimp paste is one of the traditional shrimp foods along the coast of China and Southeast Asia. Its rich nutrition and unique flavor are favored by diners at home and abroad. (-) Shrimp paste is one of several kinds of planktonic crustaceans, among which the main species are: (1) Chinese hairy shrimp; (2) Japanese hairy shrimp; (3) Mysis shrimp; (4) ditch shrimp. The salt used in the production of shrimp paste must meet the national hygienic standard of washing edible salt. (2) the production technology of shrimp seedlings modern fermentation is the most scientific production process at present. The technological process is as follows: original
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