CATDOLL : CATDOLL: How to prevent and treat shrimp enteritis? Sporozoan disease in fish?

1. How to prevent and treat shrimp enteritis?

The causes of shrimp enteritis are as follows:

1. Bacterial enteritis. It is mainly caused by Vibrio, Aeromonas hydrophila, Escherichia coli, Salmonella and other bacteria. Such ponds are often accompanied by the deterioration of the bottom soil, which is conducive to the reproduction of pathogens.

Symptoms of bacterial enteritis are: the digestive tract of diseased shrimp is red, the stomach is the most obvious, the midgut becomes red and swollen, the rectum (hindgut) becomes turbid and the boundaries are unclear, and the color of the shrimp surface becomes darker. Diseased shrimps have reduced vitality, loss of appetite, and slow growth.

2. Algal toxin poisoning. When harmful algae dominate in the aquaculture water, they release algal toxins into the water during their physiological activities and after death, or the shrimp ingest harmful algae, causing shrimp poisoning and enteritis. In the actual production process, farmers often find this. Once harmful algae dominate in the water, if they are not dealt with in time, it is highly likely that shrimp will develop enteritis within a week.

3. The toxins in the bait affect the shrimp intestines and induce enteritis. For example, the oxidized oils and aflatoxins in the spoiled feed are toxic to the mucosal epithelial cells in the shrimp intestines after being ingested by the shrimps, causing damage to the shrimp intestinal tissues and then inflammation.

3. Suggestions for the treatment of shrimp enteritis

1. For ponds with mild symptoms, it is recommended to use high-quality "lactic acid bacteria" + crude protein feed (such as rice bran, bran) soaked for 2 hours and then fed directly to regulate the shrimp's intestines. You can also use "synergistic bacteria" and "water Weikang" (compound probiotics) to mix and feed.

2. In severe cases, antibiotics (such as Xuelizhi, Noricon, etc., with a content of 10% of the national standard product, 10 kg per 100 grams of feed) + Yulejian, and aquatic compound multi-dimensional feed for oral administration. Use it continuously for 3-5 days, and then use live bacteria to mix the feed for oral administration to regulate the intestines and reduce the probability of recurrence of enteritis.

In addition to taking it orally, it is recommended to use "Angie" (povidone iodine) or "Platinum Kang", "Bacteriophage" disinfectant 1-2 times to kill pathogenic microorganisms at the bottom of the pond. It is best to use oxidizing bottom improvers (such as "Di Fu Zhuang", "Oxygen Fu Zhuang", "Platinum Shield-Di Shield", "Di Yuan Kang", etc.) to improve the bottom 1-2 times to reduce the growth of pathogens.

If the enteritis is caused by algae toxin poisoning in the aquaculture water, you need to use "detoxification and liver protection" for detoxification first, and use it continuously for 1-2 times depending on the situation. Then use "Shuiweikang" and "Algae Toxin Decomposition" in large doses to suppress harmful algae in the pond and regulate the algae phase of the aquaculture water.

2. Sporozoan disease in fish?

First, we need to distinguish the type of disease and the type of fish we are raising. Sporozoa are a large class of pathogenic protozoa, and there are many types. There are many fish disease sporozoa, which can parasitize the mesentery, gills, brain, spinal cord, and internal organs. Iodine bubble worms are the main pathogenic organisms of carp. Generally, prevention and treatment are the main measures. It is too late to infect the fish. Prevention and control methods:

1. Thoroughly clean the pond with quicklime, etc. to inhibit the massive reproduction of spores and reduce the occurrence of this disease;

2. Before stocking the fish, add 500g of potassium permanganate to 1 cubic meter of water, stir to fully dissolve it, and make a solution with a concentration of 500mg/L. Soak the fish for 30 minutes, or add 500g of lime nitrogen to 1 cubic meter of water, stir to make a suspension, and soak the fish for 30 minutes. Treatment of myxosporean disease This disease is caused by myxosporeans parasitizing the skin, gills, intestines and nervous system of fish. The parts of the fish disease have cysts, which are grayish white dots and tumors. Common myxosporeans include pancake-shaped iodine spores, wild carp sulfonium spores, crucian carp iodine spores, silver carp iodine spores, etc. Symptoms: The sick fish are emaciated, the body color is black, they swim alone or restlessly and wildly, and they are extremely harmful to the fish from October to February of the following year. Treatment methods: 1. Sprinkle 1 jin of 90% crystal trichlorfon per mu of water in the whole pond, and sprinkle it again after 3 to 4 days. 2. For every 10,000 fish or 100 jin of fish, mix 75 grams of edible sulfur powder with feed and feed it for one week. 3. Add 10 grams of 90% crystal trichlorfon to each jin of feed to feed fish, which can cure intestinal parasitic myxosporeans. This method is also effective for ringworm disease. Compare the following information, and it is best to consult an expert for specific practices. Other classifications 1. Madness disease is also known as silver carp madness disease, crazy knife, and silver carp iodine bubble disease. It is caused by silver carp iodine bubble parasitism in various organs and tissues of silver carp, especially the nervous system and sensory organs, such as the brain, spinal cord, parasitic lymph fluid in the cranial cavity, nerves, olfactory system, balance, and auditory systems. Silver carp fry can be infected as soon as they emerge from the membrane. At present, in production, it mainly harms silver carp of full age. When the disease is serious, it can cause a large number of sick fish to die; the meat of sick fish is not fresh and has a strong fishy smell, and it is very thin, so the commercial value of the fish that have not died is also seriously affected. This disease occurs in rivers, lakes, reservoirs, and ponds across the country, especially in Hangzhou, Zhejiang. When seriously infected, the sick fish are extremely emaciated, with a large head and a small tail, with an upturned tail. The weight is only about half of that of a healthy fish. The length of the head is 2.95 times the height of the tail stalk (2.2-2.3 times for healthy fish), and the body color is dull and lusterless. The sick fish swim alone in the water, often jumping out of the water and diving back into the water, repeating this many times and dying. When dying, the head often burrows into the mud. Some swim sideways and die due to loss of balance and feeding ability, so it is called crazy disease. When the fish body is cut open, white cysts of varying sizes visible to the naked eye can be seen at the place where the silver carp iodine vesicles parasitize; the liver and spleen are atrophied, there is ascites in the abdominal cavity, and the vagus lobe of the cerebellum is significantly congested; the sick fish are severely anemic. 2. Pancake iodine vesicle disease is a serious fish disease during the grass carp seedling breeding period. It is caused by the parasitism of the pancake-shaped iodine bubble worm, which mainly parasitizes the intestinal wall of grass carp, especially the lamina propria and submucosa of the foregut. It occurs in all fish farming areas across the country, with Fujian, Guangdong, Guangxi, Hunan, Hubei and other places being the most serious. The mortality rate can be as high as over 90%. The fry are infected 12 days after being put into the pond, causing a large number of deaths. When the water temperature is 27-30℃, it takes 12-15 days for the worm to develop a generation in the body of grass carp. When the spores aged for 6-8 months are used to artificially infect grass carp fry, 100% of them will become ill. It mainly harms grass carp with a total length of less than 5 cm, and bighead carp, silver carp and black carp mixed in the same pond are not affected. The disease is prevalent from May to July, especially from May to June. Many small white cysts are formed at the parasitic sites of the pancake-shaped iodine bubble worm, and the cysts are surrounded by connective tissue membranes formed by the host. The body color of the sick fish is black; the fish is emaciated, with a slightly swollen abdomen, light red gills, anemia, no food in the intestines, thickened foregut, and degeneration and necrosis of the intestinal wall tissue; when a large number of pancake-shaped iodine bubble worms parasitize on the spine, the fish body may bend. According to reports from Sichuan Province, pancake-shaped iodine bubble worms parasitize in the muscles of carp fry, forming white cysts. The body surface of the sick fish is uneven, and the fish grows slowly. In severe cases, the disease causes a large number of deaths. 3. Wild carp iodine bubble worm disease Wild carp iodine bubble worms parasitize on the skin and gills of dace fry and summer carp, forming many gray-white tumor-like or dot-like cysts, especially on the body surface. In severe cases, it affects the breathing and swimming of the sick fish.

3. What are the common symptoms of goldfish enteritis?

Goldfish enteritis usually occurs in April and October. Enteritis in goldfish is mainly caused by intestinal Aeromonas punctata, so this disease is also called bacterial enteritis. Goldfish infectious enteritis is mainly due to unclean water quality and feeding bait. The symptoms of goldfish enteritis are: absorption of white thread-like mucus or constipation, blood mucus flows out when the abdomen is gently pressed with the hand. The sick goldfish show anorexia, slow movement, isolation, and sluggish floating, and red spots and swelling appear on the abdomen. The fish body turns black, and the head and tail fins are more obvious. In severe cases, the intestines of the sick fish become inflamed and congested, causing the intestines to turn purple, and they will soon die.

4. What are the symptoms of koi enteritis?

Koi enteritis will cause the koi to lose appetite, move slowly, and often swim away from the group. The koi's body color will also become darker, the anus will be swollen and red, and there will be frequent stool dragging.

Treatment of enteritis.

1. If the enteritis of koi is caused by indigestion, you should reduce the feeding amount or even stop feeding for a few days to allow the koi to recover its intestinal function. You can also use garlic paste to make a small amount of medicated feed and feed it to the koi once a day for three consecutive days, and the condition will improve.

2. For koi enteritis caused by parasites, you can use intestinal worm clearing, which can effectively treat enteritis.

3. For koi enteritis caused by deteriorating water quality. First, change 1/3 of the water. Only by maintaining good water quality can the fish have a healthy body. Secondly, add 5-10 grams of furazolidone to every kilogram of feed. The daily amount is about 1% of the fish's body weight. Remember to oxygenate the sick fish.

5. What should we do if fish get enteritis in aquaculture?

Prevention and treatment of fish enteritis:

(1) Do not feed spoiled feed. Feeding with green feed can help prevent enteritis.

(2) Regulate intestinal health. Adding Yucca schidigera extract to feed can inhibit the accumulation of ammonia nitrogen and nitrite, while improving the balance of beneficial intestinal flora, enhancing resistance and preventing the outbreak of enteritis.

(3) Maintain sufficient dissolved oxygen in the water, adjust the pH value of the water, and control the water temperature.

(4) When fish enteritis breaks out, it is important to adjust the water and improve the bottom first to prevent the disease from further deteriorating. When the condition is relatively mild, use amoxicillin + doxycycline hydrochloride for treatment. When the condition is relatively serious, use florfenicol + doxycycline hydrochloride for treatment.

In short, although fish are easy to raise, if diseases are not properly prevented and controlled, great losses will be caused. We should adhere to the principle of prevention is better than cure. Long-term use of Yucca extract can effectively prevent the incidence of enteritis, improve water quality, regulate the intestines, enhance physical fitness, and ensure high yield and high income of tilapia farming!

6. How to quickly distinguish between bacterial and viral diseases in fish?

Generally, the distinction is made according to the symptoms. For example, enteritis can be caused by bacterial infection or by parasites. During treatment, when the symptoms are difficult to distinguish, both drugs are used at the same time.

7. How to treat fish tapeworm disease?

Tongue-shaped tapeworm disease is a fish disease caused by the sparganosis of tongue-shaped tapeworms and double-threaded tapeworms of the family Linguiniformes that parasitize many freshwater fish such as crucian carp, silver carp, bighead carp, grass carp, whitebait, Taihu shortnose whitebait, schizothorax, Cobitidae, Hypocritinae and Leucinae.

8. How to treat fish gill disease?

1. For bacterial gill disease, we should mainly use external sterilization and improve the water body to eliminate pathogens in the water, clean the water body to reduce pathogens and enhance the disease resistance of fish. For external drugs, use bactericides, use bleaching powder (containing more than 30% chlorine) 1-1.5 g/m3, or strong chlorine 0.3-0.5 g/m3 and other chlorine-containing agents or sterilizing drugs (such as benzalkonium bromide, chlorine dioxide, etc.) to spray the whole pond. Depending on the severity of the disease, you can apply the medicine 2-3 times continuously. For internal drugs, you can feed traditional Chinese medicine formulas or chemical drugs for clearing heat and detoxification, etc., and choose one of them to make medicine bait, and feed it continuously for 3-5 days to restore and enhance the disease resistance of fish. 2. If the disease is caused by common parasitic diseases such as Cryptochaete spp., Trichodina, Hemiptera, Trichodina, Glossocypterus, Dactylorhiza, Trichodina, and Chinese Tripterygium, you can use trichlorfon, cypermethrin, copper sulfate, etc. and insecticides sold in the market to spray the whole pond, and you can apply the medicine continuously for 2-3 times. When using copper sulfate treatment, you can also use a mixture of copper sulfate and ferrous sulfate (5:2) 0.7-1ppm (0.7-1.0 g/m3) to spray the whole pond.

9. How to prevent and treat fish curvature?

Fish will struggle before they die, so most of the time their bodies are bent. If you want to know the cause of death, you need to look at other characteristics; another type of fish is that its body is already bent before it dies. The S-shaped body is a very difficult disease to cure. Long-bodied fish will bend, and short-bodied fish will somersault. The more species of fish you raise, the more experience you will have.

Fish farming needs attention:

1. General household tap water is fine, but tap water contains chlorine. We need to use a fish tank or other water basin to fill it with tap water and leave it for at least 24 hours to wait for the chlorine in our hands to evaporate. This is healthy;

2. Put the fish you bought into clean water and sprinkle a little fish sterilization salt to sterilize the water;

3. Pay attention to the feeding of fish. Fish are not afraid of hunger but they cannot stand fullness. If you keep feeding fish, they will keep eating until they are full to death. Normally, you only need to feed fish once every 2-3 days.

4. Don’t raise too many fish at one time. If your fish tank is small, raising too many fish will cause oxygen in the water. It would be best if you buy a small air pump for fish farming.

5. When you first buy fish, please note that you should not change the water or feed them for 2-3 days;

6. Change the water for fish once every 5-7 days, and feed them once every 3-4 days. Fish are not afraid of starvation, but they cannot stand being full.

7. It is best to use soda water to clean the fish tank. If you don’t have soda water, just use clean water or tap water. Never use soap or detergent to clean it.

8. If you find abnormalities on the fish's body or head, or white or yellow spots, it may be due to excessive bacteria in the water. You should sprinkle some bactericidal salt on the abnormal parts and change to clear water in time.

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10. How to prevent and treat fish mullet disease?

Summer is the best period for fish growth and development, and it is also the peak period for fish diseases. Common fish diseases include infectious fish diseases, parasitic fish diseases and pond flooding. 1. Common fish diseases in adult fish farming 1. Infectious fish diseases: Infectious fish diseases include hemorrhagic diseases caused by viruses and enteritis, red skin and gill rot caused by bacteria. These three diseases are also called the "old three diseases". Preventive measures are: ① Spray the entire pond with 1ppm bleaching powder or a mixture of copper sulfate and ferrous sulfate (5:2) at a concentration of 0.7ppm 1-2 times every 10-15 days; ② The use of drug hanging bags for flow-through farming is more effective, and a course of treatment is hung every 10-15 days. You can use a mixture of copper sulfate and ferrous sulfate (5:2) of 150 grams per bag, or bleaching powder of 250 grams per bag into the water, and hang it for three consecutive days. You can also use 5-10 kg of quicklime to spray the whole pond. ③ For hemorrhagic disease, you can use "Kebaoling" produced by Wuhan Keyang to spray the whole pond. Calculated at a water depth of 1 meter, each bottle is 10 mu, or copper sulfate 0.7ppm is sprayed on the whole pond for two consecutive days, once a day. ④ Enteritis, red skin, and gill rot often manifest as complications. You can use Antechlorhydantoin produced by Beijing Zhongda Ant, spraying the whole pond with 4 mu per bottle, or use 1ppm bleaching powder to spray the whole pond. 2. Parasitic fish diseases: Parasitic fish diseases include Chinese mullet, ringworm, anchor mullet and fish mullet diseases. You can use "Kechongwang B" produced by Wuhan Keyang, spraying the whole pond with 5 mu per bottle, or fish dichlorvos produced by Beijing Zhongda Ant, 4 mu per bag. 2. Common fish diseases of fish species 1. Infectious fish diseases of fish species: Common diseases include enteritis, red skin, gill rot, white head and white mouth, tail rot, etc. The treatment measures are as follows: ① The treatment of enteritis, red skin, and gill rot is the same as that of adult fish farming; ② White head and white mouth, calculated based on an average water depth of 1 meter, use 15 kg of quicklime to spray the entire pond; ③ Tail rot is also called tail stalk disease, calculated based on an average water depth of 1 meter, use Antechlorhydrin to spray the entire pond with each bottle of 4 mu. 2. Parasitic fish diseases: The treatment of parasitic fish diseases such as Chinese mullet, ringworm, anchor mullet, and fish mullet is the same as that of adult fish farming. In addition, there are parasitic diseases caused by protozoa, such as wheelworm, oblique tube worm, and small claw worm disease. Wheelworm and oblique tube worm can be treated with a bottle of cyproconidia B, 5 mu per bottle, or 0.7ppm copper sulfate and ferrous sulfate mixture (5:2) sprayed throughout the pond. The treatment of microcarposis can be treated by spraying 1-2 g/m (water depth) of methylene blue throughout the pond. 3. Flooding: Flooding is very easy to occur in ponds in summer. It is a phenomenon of fish death caused by insufficient dissolved oxygen in the pond water, which often occurs from May to September. Under normal circumstances, when the weather is hot and humid, the pressure drops on cloudy days, and after heavy rains, foam will appear in the pond with fishy smell, and fish and shrimps often float on the water surface and gather at the edge of the pond. The preventive measures are as follows: 1. The transparency of the pond water should be maintained at 20-25 cm, and the water should be changed every 10-15 days. If the water concentration is too high, new water should be added in time. If the water source conditions are poor, a water storage pool can be set up. Turn on the machine for about 2 hours at noon on sunny days. 2. Pay attention to the pond inspection. If flooding is found, turn on the aerator immediately, inject new water at the same time, and reduce or stop feeding. 3. Spraying the whole pond with alum or gypsum powder also has a certain effect.