Food Cart,Hospital Furniture,Food Trolley Flower Medical Equipment Co., Ltd. , http://www.shmedicalequipment.com
The difference and prevention of confusing fish disease
Differences and prevention of confusable fish diseases In the production process, some fish diseases have similar appearance symptoms, but the internal disease mechanisms are not the same, and it is difficult to achieve the right remedy. As a result, the prevention and treatment of fish diseases in many areas is difficult. Here are some of the more confusing methods of fish disease prevention are described as follows: First, intestinal hemorrhage of grass carp hemorrhage and bacterial enteritis disease 1. Symptoms and diagnosis; obvious differences in the late onset, easier to identify, and the early onset of the two symptoms are very similar, sick fish black body color, slight congestion or hemorrhage of the body surface, sick fish outliers alone, swimming slow, loss of appetite , Open the fish maw, both are congested in the bowel wall, the difference is that when the biopsy, the former intestinal wall is better, less intestinal mucus, microscopic examination shows a large number of red blood cells in the intestine and into pieces of epithelial cells shedding; The latter had poor intestinal wall elasticity and more mucus in the lumen of the intestine. Microscopic examination revealed fewer red blood cells in the intestine, with some necrotic epithelial cells. 2. Prevention and treatment method 1 intestinal hemorrhage hemorrhagic disease grass carp A. Prevention; the main use of intraperitoneal injection of vaccines, such as vaccine liquid Xiahua bath and other immune routes, the effect is better. The general immunity can be maintained from October to 14 months, and the survival rate of fish species is 70-80%, and the higher ones are more than 90%. B. Treatment So far, there is no specific drug for the treatment of this disease, and prevention is the main method in clinical practice. In the onset season, use one of the following medications per month for a certain period of time. Excluding chlorine dioxide of 0.0210-6-0.0310-6 or 0.310-6-0.410-6 trichloroisocyanuric acid (containing 85% of available chlorine); 0.5 kg of rhubarb, astragalus, and phellodendron per 100 kg of fish per day. Banlangen (single or combined use), plus 0.5 kg of salt to feed, feed for 7 days. 2 Bacterial enteritis disease The disease has always been one of the most serious diseases of fish diseases in China, and this disease is often associated with bacterial gill disease and red skin disease. A. Prevention; Take comprehensive prevention in clinical practice, do a good job of "Four Ding" feeding, do not feed degenerative feed; During the onset of the monthly feeding of Chinese herbal medicine for 1 to 2 courses, 500 grams of garlic head per day or 100 grams of fish per day and Andrographis 2 Kilograms, add 200 grams of salt after smashing, mix feeding, feed three days for a course of treatment. B. Treatment; Excessive chlorine disinfectant; At the same time fed nitrofurazone feeding, per 100 kg needle, 10 g on the first day, halved in the first 2 days. Second, bacterial gill disease and parasite gizzard disease 1. Symptoms and diagnosis of the two symptoms are basically similar, the disease fish black body color, especially in the head is very bad, increased mucus in the sputum, sputum swelling, severe silk defects, cartilage exposure. Late onset is easy to distinguish between the two, the former have "open skylight", the latter no. If there is no "open skylight" or early onset, it is necessary to identify with the aid of a microscope. If the number of parasites is small and does not dominate the microscopic examination, it can be basically diagnosed as bacterial gill disease; otherwise, it is parasite gizzard disease. . 2. Control methods 1 bacterial rotting disease A. Prevention; in the onset season, the whole pool is sprinkled with lime 1 or 2 times a month to maintain the PH8 of the pool water; during the onset season, the black locust leaves are bundled into small bundles, placed in a pool of water, and turned every other day. B. Treatment; Chloride disinfectant is sprayed in the whole pool; Oral medicine is given for 4 to 6 days. Each 100 kg of fish is fed with 1 to 2 g of furazolidone and the dosage is doubled on the first day. 2 Parasitic rotting disease A. Prevention; methods with bacterial gill disease. B. Treatment; Quanchiposa 90% crystal pest hundred enemy insects, so that the pool water into 0.310-6-0.510-6 concentration; timely fish out the diseased fish, using 5% salt water or 1.010-6 bleaching disinfection, general disinfection time as much as possible Longer until the fish can't stand it. III. Bacterial Whitehead and Trichodonosis 1. Symptoms and diagnosis; the former disease fish black body color, floating in the shore, head and mouth around the white, severe rot occurs, and often occurs in fry and early summer flowering stage. The latter, there are three special cases, the symptoms are very similar to the former, one is when the fry in the hatchery or hatching cylinder is parasitized by a large number of trichomonads, the mouth is breathing on the water, showing a white head and white beak; the second is feeding the fry for more than 10 days. When a large number of trichomonads infested, the fish swarmed around the edge of the pool and showed a safari; when the tridactylus was parasitized by a large number of trichomonads, most or all of the body of the fish was white. For these two diseases, microscopy must be used to distinguish and confirm the diagnosis. 2. Prevention and cure method 1 bacterial white head white mouth disease A. The prevention of fry stocking density should be reasonable and scientific; drug prevention with bacterial gill disease. B. Treatment of the whole pool spilled erythromycin for livestock, so that the pool water into the concentration or Quanchiposa Furin, so that the pool water into a concentration. 2 Trichodiasis A. Precaution: Fish species should be bathed with 1010-6-2010-6 potassium permanganate solution for 10-30 minutes before stocking, and fresh twigs of poplar or poplar 2.5-3 kg of water per 100 square meters of water. ), turn around every other day, every 7 to 10 days for a fresh branch. B. Treatment; Quanchiposa copper sulfate or with ferrous sulfate mixture (5:2), the general pool of water into the concentration. Fourth, vertical scale disease and fish wave bean disease 1. Symptoms and diagnosis of the former, the sick fish surface roughness, the scales of the front of the fish upright, scaly sac accumulation of translucent liquid; severe systemic scales erected, bloody scaly sac accumulation of fluid, sometimes accompanied by body surface Congestion, fin base hyperemia. The latter, when a large number of fish-transmitted bean worms are parasitized within the lining, can also cause vertical scaly symptoms. This requires the use of microscopic examination of the sac fluid to distinguish them. The former has a large amount of Brevibacterium, and the latter has a large number of fish-transmitted bean worms. 2. Control methods 1 vertical scale disease A. Prevention; Conduct comprehensive prevention, prevent fish injuries, and minimize the duration of overwintering. B. Treatment with bacterial gill disease. The broodstock is ill, and every kilogram of fish is injected intraperitoneally with streptomycin sulfate 15-20 mg. 2 fish wave bean disease; control methods with trichodiasis. In winter, when the water temperature is 2～8°C, Quanchiposa copper sulfate and potassium permanganate mixture (5-2) is 0.310-6-0.410-6, and the treatment effect is better.