The California baboon, also known as the bigmouth bass, is a rare freshwater fish native to North America. Californium is suitable for temperature, rapid growth, less disease, and easy catching. Under artificial feeding conditions, pellet feeds can be used. The meat is delicate and delicious, and it is very popular in the market.
First, hetosis (canker disease)
1. Cause: Aeromonas hydrophila.
2. Symptoms: The diseased fish slowly swims on the surface of the water and cannot swim underwater when it is disturbed. The main symptoms of the disease are mouth ulcers, ulcers and jaws are the most severe; both sides of the body surface rot, accompanied by congestion of the base of the fins. At the early stage of the disease, the affected area became inflamed and the scales fell off. The skin became red and rot and gradually penetrated into the dermis and muscles to form an irregular circle with ulcers on the head. The exposed skull was often seen.
3. Popular features: Every year from the middle of April began to occur. From May to June and September to October there are two peaks. The disease is fierce. Once it is onset, it will cause massive morbidity and death in three days. If no decisive prevention and control measures are taken, the disease will spread in large numbers and the incidence rate will reach 100%.
4. Analysis of the cause of the disease: The disease is caused by nutritional deficiencies, decreased resistance to disease, and secondary bacterial infections. Because the frozen fish contains a lot of "vitamin decomposition enzymes", California salmon will produce vitamin deficiency after eating frozen fish; in addition, if the thawing is not complete, there are often ice blocks inside the fish block, after the California quail eats, indigestion, and frozen fish. The combination of histamine and free amino acids produced by protein breakdown during storage and storage results in "viscous" damage to the viscera. At the same time, the water quality and sediment quality of the aquaculture pond after feeding a large amount of chilled fish were too high; the culture density was too large and cross-infection caused an outbreak of the disease.
5. Control: 1 It is best to feed fresh fish, such as frozen fish must be completely thawed, and then sterilized with 3% saline before feeding. 2 The ponds are cultured thoroughly with clear lime. The whole pool is disinfected alternately with 20 mg/liter of quicklime and 0.3 mg/liter of chlorine dioxide every 10 to 15 days. Vitamin C is added to the fed feed, and the amount is 1‰ to 3‰ that of the feed fish. 3 The diseased fish ponds were first disinfected with trichloroisocyanuric acid, and the iodine preparations were sprayed with the whole pool for 3 days every other day. At the same time, feed was fed with norfloxacin and chlortetracycline.
Second, acne disease
1. Cause: The disease is caused by a bacterial infection.
2. Symptoms: The diseased fish has ulcerous ulcerative abscesses in the affected area, usually on both sides near the base of the dorsal fin of the fish, and pus can be seen when the sore or bruise is squeezed.
3. Prevention: 1 thorough clear pond disinfection. 2 Seedlings are soaked with 2% to 3% saline for 15 to 30 minutes. 3 Sprinkle lime once every half month, and use 1 to 8 kg of quicklime per mu.
4. Treatment: 1 Quanchiposa 0.2 ~ 0.3 mg / L chlorine dioxide or quaternary ammonium salt complex iodine. 2 with strong kecining bait feeding.
Third, bleeding
1. Cause: Aeromonas hydrophila.
2. Symptoms: The redness of the diseased fin base and abdomen, especially at the base of the pectoral fins and on the sides of the body near the posterior edge of the lid, has bleeding lines perpendicular to the side lines of the fish. Some sick fish are also accompanied by eyelid congestion and muscle congestion. Anatomical examination, ascites in the body cavity, empty food in the intestinal tract and accompanied by congestion.
3. Epidemic features: The disease is prosperous during the period of high temperature from July to August. It is characterized by acute onset, rapid infection, and multiple deaths.
4. The cause of the disease: the feeding of rotten spoilage feed, food bait is not timely removed, caused by deterioration of water quality.
5. Prevention: 1 pond clear pond disinfection. The fish species should be soaked with 3% to 5% salt water in advance. Should be fed fresh fish, such as frozen fish must be completely thawed, and 3% salt water before sterilization. 2 disease fish pond with 0.2 ~ 0.3 mg / l chlorine dioxide, chlorine and other disinfectants Quanchiposa.
Fourth, rotten disease
1. Cause: Cylindrical fibrous sticky bacteria.
2. Symptoms: The bacteria mainly attack the fish's zygomatic tissue. When the water temperature is appropriate, the bacteria multiply rapidly, causing the silk tip to rot white and the cartilage exposed. Some diseased fish are not well finned and their ends rot. Diseased fish often swim slowly out of the water or pool, do not eat, and soon die. The onset time is the same as the onset time of grass carp gill disease.
3. Prevention: 1 Lime completely clear pond. 2 Seedlings are soaked with 2% to 3% saline for 15 to 30 minutes. 3 Sprinkle lime once every half month, and use 1 to 8 kg of quicklime per mu.
4. Treatment: Thrive with 0.3 mg/L chlorine dioxide or 0.3 mg/L Trichlor Quanta, use in severe ponds for 2 days.
V. Saprolegnia
1. Cause: The disease is caused by body injury or scaling off, and the water temperature is reduced due to water fungal infection.
2. Symptoms: There is a white cotton floc in the affected area. The fish body is very weak and weak. It swims alone on the shore, floats on the water surface, and finally dies.
3. Control: 1 Lime completely clear pond. 2 Seedlings are soaked with 2% to 3% saline for 15 to 30 minutes. 3 Cultivate good water quality before stocking and control the transparency at 35 cm. 4 With brochlor chloride in the Quanchiposa.
First, hetosis (canker disease)
1. Cause: Aeromonas hydrophila.
2. Symptoms: The diseased fish slowly swims on the surface of the water and cannot swim underwater when it is disturbed. The main symptoms of the disease are mouth ulcers, ulcers and jaws are the most severe; both sides of the body surface rot, accompanied by congestion of the base of the fins. At the early stage of the disease, the affected area became inflamed and the scales fell off. The skin became red and rot and gradually penetrated into the dermis and muscles to form an irregular circle with ulcers on the head. The exposed skull was often seen.
3. Popular features: Every year from the middle of April began to occur. From May to June and September to October there are two peaks. The disease is fierce. Once it is onset, it will cause massive morbidity and death in three days. If no decisive prevention and control measures are taken, the disease will spread in large numbers and the incidence rate will reach 100%.
4. Analysis of the cause of the disease: The disease is caused by nutritional deficiencies, decreased resistance to disease, and secondary bacterial infections. Because the frozen fish contains a lot of "vitamin decomposition enzymes", California salmon will produce vitamin deficiency after eating frozen fish; in addition, if the thawing is not complete, there are often ice blocks inside the fish block, after the California quail eats, indigestion, and frozen fish. The combination of histamine and free amino acids produced by protein breakdown during storage and storage results in "viscous" damage to the viscera. At the same time, the water quality and sediment quality of the aquaculture pond after feeding a large amount of chilled fish were too high; the culture density was too large and cross-infection caused an outbreak of the disease.
5. Control: 1 It is best to feed fresh fish, such as frozen fish must be completely thawed, and then sterilized with 3% saline before feeding. 2 The ponds are cultured thoroughly with clear lime. The whole pool is disinfected alternately with 20 mg/liter of quicklime and 0.3 mg/liter of chlorine dioxide every 10 to 15 days. Vitamin C is added to the fed feed, and the amount is 1‰ to 3‰ that of the feed fish. 3 The diseased fish ponds were first disinfected with trichloroisocyanuric acid, and the iodine preparations were sprayed with the whole pool for 3 days every other day. At the same time, feed was fed with norfloxacin and chlortetracycline.
Second, acne disease
1. Cause: The disease is caused by a bacterial infection.
2. Symptoms: The diseased fish has ulcerous ulcerative abscesses in the affected area, usually on both sides near the base of the dorsal fin of the fish, and pus can be seen when the sore or bruise is squeezed.
3. Prevention: 1 thorough clear pond disinfection. 2 Seedlings are soaked with 2% to 3% saline for 15 to 30 minutes. 3 Sprinkle lime once every half month, and use 1 to 8 kg of quicklime per mu.
4. Treatment: 1 Quanchiposa 0.2 ~ 0.3 mg / L chlorine dioxide or quaternary ammonium salt complex iodine. 2 with strong kecining bait feeding.
Third, bleeding
1. Cause: Aeromonas hydrophila.
2. Symptoms: The redness of the diseased fin base and abdomen, especially at the base of the pectoral fins and on the sides of the body near the posterior edge of the lid, has bleeding lines perpendicular to the side lines of the fish. Some sick fish are also accompanied by eyelid congestion and muscle congestion. Anatomical examination, ascites in the body cavity, empty food in the intestinal tract and accompanied by congestion.
3. Epidemic features: The disease is prosperous during the period of high temperature from July to August. It is characterized by acute onset, rapid infection, and multiple deaths.
4. The cause of the disease: the feeding of rotten spoilage feed, food bait is not timely removed, caused by deterioration of water quality.
5. Prevention: 1 pond clear pond disinfection. The fish species should be soaked with 3% to 5% salt water in advance. Should be fed fresh fish, such as frozen fish must be completely thawed, and 3% salt water before sterilization. 2 disease fish pond with 0.2 ~ 0.3 mg / l chlorine dioxide, chlorine and other disinfectants Quanchiposa.
Fourth, rotten disease
1. Cause: Cylindrical fibrous sticky bacteria.
2. Symptoms: The bacteria mainly attack the fish's zygomatic tissue. When the water temperature is appropriate, the bacteria multiply rapidly, causing the silk tip to rot white and the cartilage exposed. Some diseased fish are not well finned and their ends rot. Diseased fish often swim slowly out of the water or pool, do not eat, and soon die. The onset time is the same as the onset time of grass carp gill disease.
3. Prevention: 1 Lime completely clear pond. 2 Seedlings are soaked with 2% to 3% saline for 15 to 30 minutes. 3 Sprinkle lime once every half month, and use 1 to 8 kg of quicklime per mu.
4. Treatment: Thrive with 0.3 mg/L chlorine dioxide or 0.3 mg/L Trichlor Quanta, use in severe ponds for 2 days.
V. Saprolegnia
1. Cause: The disease is caused by body injury or scaling off, and the water temperature is reduced due to water fungal infection.
2. Symptoms: There is a white cotton floc in the affected area. The fish body is very weak and weak. It swims alone on the shore, floats on the water surface, and finally dies.
3. Control: 1 Lime completely clear pond. 2 Seedlings are soaked with 2% to 3% saline for 15 to 30 minutes. 3 Cultivate good water quality before stocking and control the transparency at 35 cm. 4 With brochlor chloride in the Quanchiposa.
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