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How to prevent and treat shell ulcer disease (brown spot disease) in prawns
(1) Pathogen The bacteria that can be isolated from the lesions include Vibrio, Pseudomonas and Flavobacterium, etc. They are Gram-negative bacilli. (2) Symptoms ① On the body surface shell and appendages of diseased prawns there are dark brown or black spot-like ulcers, forming
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How to prevent and control coccidiosis in nutria? Farmers need to master the methods
Pathogen 1 The pathogen of coccidiosis (C. ccidiosis) is the coccidium of the class Sporozoa, a parasitic single-celled protozoan. Coccidia parasitize the epithelial cells of the small intestinal mucosa, and through asexual reproduction (schizogony) for many generations, they produce many new individuals. After several schizogonic
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How to prevent and treat filamentous bacterial disease in prawns? Methods farmers must see
(1) Pathogen The pathogens are Leucothrix mucor, Thiothrix (TAiothrix) and Flexibacter, etc. Leucothrix is filamentous, unbranched, slightly thicker at the base and slightly narrower at the tip, with a length of 5-500 microns or more. It reproduces by conidia and develops into new bacterial cells.
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Prevention and Control Methods for Microsporidiosis in Farmed Shrimp
(1) Pathogen In China, 3 species have been found: Ameson on the bodies of Chinese shrimp (Penaeus chinensis) and banana prawn (Penaeus merguiensis), Agmasoma on the body of banana prawn, and Pleistophora on the body of white shrimp (Penaeus penicillatus). The spores are slightly oval or pear-shaped, with a length of 2 to
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Control Methods for Fusarium Disease in Shrimp Farming
(1) Pathogen: The Fusarium species include Fusarium solani, Fusarium oxysporum, Fusarium tricinctum and Fusarium graminearum. The fungal body is filamentous and branched, often with septa. Reproduction occurs by forming macroconidia, microconidia
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Prevention and Treatment Methods for Feed-Induced Diseases in Dairy Cows
In the process of dairy cow breeding, farmers mostly use various local grasses, vegetables, agricultural by-products and industrial by-products as feed. Occasionally, improper feed handling leads to dairy cow illness, reducing milk yield and quality, and even causing cow death, which affects the development of the cattle industry. The following are the
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How to prevent and treat trichodiniasis in yellow catfish farming?
[Cause] The pathogens are Trichodina and Trichodinella. They spread through direct contact, or the trichodinids leave the fish and swim freely in the water to move to new hosts. [Symptoms] The pathogens mainly parasitize the gills, body surface skin and fins of yellow catfish. With a small number of parasites,
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What are the prevention and control methods for enteritis in yellow catfish?
(1) Pathogen: Aeromonas punctata. (2) Symptoms: The diseased fish has a distended abdomen and red, swollen anus; when the abdomen is gently pressed, yellow mucus flows from the anus, and the diseased fish swims alone away from the group. When the abdomen is cut open, in mildly affected fish the esophagus and anterior intestine are congested and inflamed, while in severe cases the entire intestine is inflamed and pale red
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Control Methods for Ichthyophthirius multifiliis Disease in Farmed Yellow Catfish
(1) Pathogen: Ichthyophthirius multifiliis. (2) Symptoms: On the skin, fins and gills of diseased fish, small white cyst-like spots can be seen with the naked eye; in severe cases, the body surface appears to be covered with a white film. Diseased fish respond sluggishly or float at the water surface. Due to bacterial infection at the affected sites, the fish body surface becomes inflamed, or locally necrotic, scales fall off, fins split diagonally, gill epithelium proliferates, and death occurs due to impaired movement and difficulty breathing in the gill area.
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What are the prevention and treatment methods for eel farming diseases?
Eel swim bladder nematode disease [Pathogen] is caused by eel swim bladder nematodes. There are three species of eel swim bladder nematodes parasitic in the swim bladder of eels: Anguillicola globiceps, Anguillicola crassa, and Anguillicola australiensis. Eel swim bladder nematodes are ovoviviparous; newly released larvae measure only 0.2 mm-0.35 mm, are covered with a
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