Prevention and treatment of wilt and shrunken disease of bighead carp
1. Etiology: due to overstocking and insufficient feed, some fish fry or species do not get enough feed and lose weight and die.
two。 Symptoms: the diseased fish are shrunken and thin, with a large head and a small tail, a blade-like back, pale Gill filaments, severe anemia, slow activity, black body color, and soon die.
3. Epidemic situation: the disease often occurs in the late stage of fish breeding. The overwintering pond fish species and over-close-cultured adult fish are caused by insufficient feeding due to improper stocking density and matching proportion, especially bighead carp.
4. Prevention and control methods: strengthen the feeding management and feeding work, feed well before overwintering, and master the matching proportion and stocking density.
- Prev
Fried prawns with kimchi
Cuisine: Sichuan cuisine main ingredients: River shrimp excipients: Pickles, Sichuan Style, green and red sharp pepper, radish seasoning: salt, chicken essence, soy sauce, white sugar, cooking wine, dried pepper cooking method: 1, cut green and red sharp pepper, radish and kimchi into small pieces, sit in the pan and pour in the oil. After the oil is hot, add the river shrimp and deep-fry the crisp. 2. Leave the bottom oil in the pan, stir-fry the dried chili, kimchi, sharp pepper and radish over high heat, add cooking wine, sugar, soy sauce, chicken essence and salt to season, and stir-fry the shrimp.
- Next
Three clever ways to remove fish scales
Vinegar to scale: before scraping the scales, you may wish to put a little vinegar in a basin of cold water, and then put the fish in the basin for a period of time, or directly wipe the vinegar on the fish several times, so that after using tools to scrape the scales, you can feel much easier. Rice wine scaling: In addition to vinegar, ordinary rice wine can also help to scale. Just soak the fish in a basin of cold water beforehand and add the right amount of rice wine to the cold water. Wait patiently for some time before removing the fish.
Related
- On the eggshell is a badge full of pride. British Poultry Egg Market and Consumer observation
- British study: 72% of Britons are willing to buy native eggs raised by insects
- Guidelines for friendly egg production revised the increase of space in chicken sheds can not be forced to change feathers and lay eggs.
- Risk of delay in customs clearance Australia suspends lobster exports to China
- Pig semen-the Vector of virus Transmission (4)
- Pig semen-the Vector of virus Transmission (3)
- Five common causes of difficult control of classical swine fever in clinic and their countermeasures
- Foot-and-mouth disease is the most effective way to prevent it!
- PED is the number one killer of piglets and has to be guarded against in autumn and winter.
- What is "yellow fat pig"? Have you ever heard the pig collector talk about "yellow fat pig"?