Prevention and treatment of fulminant hemorrhagic disease of silver carp and bighead carp in Shantang Reservoir
In 2005, silver carp cultured in Mianhuatan reservoir died in a large area, with an incidence area of 200 mu and a mortality rate of 70%. The disease was easy to repeat and difficult to control, and was diagnosed as fulminant hemorrhagic disease of silver carp and bighead carp. The harm of this disease is great, so @ # @ 233 families should attach great importance to it.
First, the epidemic situation: it is easy to become prevalent in March-May and August-October every year, and the mortality rate of the disease is as high as 70%.
Second, symptoms: often appear "dark floating head", the initial 10 cm under the surface of the water swimming, serious slow or unresponsive, floating head day and night.
Third, preventive measures: 1, first use quicklime to clean the pond and disinfect. 2. Dibromohydantoin and other whole pools can be used to prevent the onset of the disease.
Fourth, treatment: sprinkle the whole pool with "Yujing Qing" at the time of onset, or sprinkle it with urea, salt, trichlorfon and bleach mixed solution in the whole pool twice in three days.
- Prev
Fish balls in soup
Fish balls in floating soup is a delicious dish suitable for all ages. Select silver carp, white fish, carp skinned and spined fine fish meat, chop into stuffing, stir for a long time, add a little water in the middle according to one direction until foaming, and then boil into boiling water. Then put the fish balls in the water for a period of time, then use the seasoning to make soup, fish out the balls from the water and put them into the soup, then boil the soup and serve them. Fish balls were milky white, such as the size of ginkgo, white fish balls floating in the soup, and then sprinkle with garlic sprouts, coriander, color and flavor
- Next
The effect of rare earth feeding on fish is good.
Rare earth refers to the general name of 17 metal elements in the periodic table, including lanthanum, praseodymium, neodymium, cerium, samarium and so on. Among them, cerium accounts for 48%, lanthanum 25%, neodymium 16%, praseodymium 5%, samarium 2%, and other 12 elements 4%. In recent years, rare earth has become an important resource for national economy and national defense construction. Not only can it be widely used as an industrial vitamin in metallurgy, machinery, petroleum, chemical industry, light industry, electronics and other industries, but also can be used as micro-fertilizer in agricultural production. In fishery production, feeding rare earths to fish also has a very good effect. According to the test
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