Prevention 1 Reducing the stress caused by environmental changes during transportation to Astragalus, maintaining water temperature stability and excellent water environment. 2 Stir in vitamin C, compound multidimensional, etc. in the feed to enhance the jaundice constitution and reduce its anti-stress response. 3 Add fish to the cage with multi-dimensional, 1 to 2 grams of water per cubic meter of water, and then use a low-stimulus, low-dose disinfectant to purify the water.
Pre-bleeding of bleeding seed, or prone to becoming pre-winter. The main symptoms: diffuse body bleeding, the most obvious abdomen, the body is accompanied by different shapes of red plaque, mouth, anal swelling; anatomical liver enlargement, dark brown, inelastic, abdominal cavity, intestinal congestion.
Prevention 1 Use 10 g/m3 povidone iodine to wash the carcasses for prevention; 2 treat them with glutaraldehyde for whole-box disinfection, and pour povidone-iodine in the whole box the next day, 1 g/m3 of water. At the same time take some hemostatic, antiviral, allicin and other drugs for 7 days.
The enterophage disease stage and the fattening stage of the rearing period are prone to develop. The main symptoms: Obvious decrease in food intake of jaundice, anal red swelling, intestinal congestion.
Control 1 does not feed corrupt spoilage foods; 2 disinfection of ponds every half a month in epidemic seasons; 3 every 5 to 7 days with garlic allergens for 2 to 3 days. 4 treatment with external povidone iodine 0.5 ~ 1 g / cubic meter disinfection 2 ~ 3 times, oral administration of garlic and other drugs.
Turnip disease often occurs in summer and autumn. The main symptoms: round, oval red spots on the body surface, severe skin rot, the formation of ulcers, and even exposed bones and internal organs, sometimes intestinal, anus also congestion and inflammation.
Prevention 1 Povidone iodine 1 ~ 2 g / cubic meter disinfected body of water; 2 go to head, drag in the pool.
The main symptoms of tail Tail: tail congestion and inflammation, followed by muscle necrosis ulceration, severe tail rot, tail spine exposed. The prevention and cure method is the same as the decayed skin disease.
The main symptoms of capillary nematode disease: the sick man will head out of the water, abdomen upward, body color black, anal swelling, easy to cause intestinal ulcers ulceration.
Control 1 disinfection with insecticide whole pool; 2 internal use of insecticidal pesticides.
Minamata patients suffer from sluggish activity, loss of appetite, and affect growth.
Prevention 1 Lime was used to thoroughly clear the pond before seeding; 2 seedlings were soaked with povidone-iodine 10 g/m3 for 10 minutes before the lower box was placed; 3 Heterol meat was sterilized when it was fed, and the leeches were killed. 4 Use animal blood to trap into the tank.
Plant extraction process
1. Select plants/herbs. No more than ancient prescriptions, prescriptions, folk herbs to find. At present, common and uncommon herbs have been studied. At present, it is mostly to increase the amount of medicinal materials to extract and separate components with low content, or to find medicinal plants that have never been studied from miao medicine, Tibetan medicine, Mongolian medicine, Africa, Latin America and other places.
2. The extraction. Solvent petroleum ether, n-hexane, cyclohexane, benzene, chloroform, ethyl acetate, n-butanol, acetone, ethanol, methanol, water (low polarity → high polarity). Daily medicine decoction effective, water and ethanol and other solvents with large polarity, such as artemisinin boiling ineffective extraction with petroleum ether and other solvents with small polarity. Common medicinal materials water/alcohol/ether to go through, separation and identification of more compounds.
3. The separation. This is the most important work. In the solution extracted from the second step, there are dozens of compounds, usually by column chromatography, which is often referred to as the column flushing. It's a lot of work, it's boring, it's low tech. A master's student might do this every day for two years. The column for separating compounds, as shown below, is as large as 2 meters high and as small as 10 centimeters. Change the solvent condition of mobile phase, change the material of column, different conditions and different separation principles of column repeatedly punching, can be separated from the monomer compound.
Herbal Medicine,Ginger Extract Powder,Hawthorn Berry Extract,Lycium Berry Fruit Extract
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