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Causes and Prevention and Control Methods of Duck Hemorrhagic Disease
Duck hemorrhagic disease is an infectious disease caused by a novel herpesvirus (Duck herpesvirus type II) that can infect ducks of all breeds and all ages. Because the feather shafts of both wings, the tip of the upper beak, and the tips of the claws and webbed feet of affected ducks often bleed and appear purplish-black, it is commonly known as duck "black feather disease," duck "black shaft disease," and duck "purple beak and black foot disease"; based on the characteristic necropsy lesions of the disease, it is also called duck hemorrhagic disease. At present, the disease occurs in several southern provinces of China, including Fujian, Guangdong, and Zhejiang, and affected duck flocks are prone to concurrent or secondary bacterial infectious diseases (such as duck infectious serositis
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Control and Treatment Methods for Other Pig Diseases (1)
(1) Listeriosis in pigs. This disease is a zoonotic infectious disease caused by a Gram-positive Listeria bacterium that has no capsule and no spores. In pigs, it mainly presents with the characteristics of meningoencephalitis, septicemia and abortion. Symptoms: Most affected pigs (especially piglets) show septicemic symptoms, with body temperature rising to 42°C, depression, anorexia, rapid breathing, and cyanosis of the skin of the head, ears and abdomen. Gait is abnormal, with the hind legs splayed while sitting on the ground in a stargazing posture, or continuous circling, spasms, gradual paralysis of the hind legs, and after falling to the ground, paddling of the limbs, with death within 2-4 days; pregnant sows abort.
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How to Prevent and Control Common Diseases in Pigs in Winter and Spring
This disease is an infectious disease of piglets caused by Salmonella. Piglets aged 1-4 months have high morbidity and mortality rates. The disease occurs in endemic or sporadic form, often in cold, changeable weather and rainy seasons. Poor environmental hygiene and reduced resistance of piglets can induce this disease. Symptoms and lesions: In the initial acute onset, it is similar to swine fever and requires comprehensive judgment combined with other examinations. The typical symptom is persistent diarrhea with a chronic course, and some piglets also show pneumonia symptoms. Lesions: Acute cases often die of shock, with purple congestion at the extremities and systemic septic
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Understanding High-Fever Diseases in Pigs in Summer and Autumn in One Article
For the pig industry, summer and autumn can span from May to early November each year. Over this half-year period, pig diseases are commonly seen and frequently occur for many reasons. According to rough statistics, the incidence of pig diseases in summer and autumn accounts for about 70% of the whole year. The notable feature of pig diseases during this period is that clinically they are mainly characterized by high fever, with body temperature mostly rising above 41°C, presenting as continued fever or recurrent high fever. Among the commonly occurring high-fever diseases are: swine fever, swine erysipelas, swine pasteurellosis, piglet paratyphoid, swine septicemic streptococcosis
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What are the prevention and control methods for soft-shelled turtle red plastron disease?
Cause: Caused by Aeromonas punctata infection. Symptoms: Sick turtles respond slowly to external stimuli. The most obvious sign of the disease is that the entire plastron becomes red and swollen or appears in a red patch pattern, accompanied by ulceration and edema. Some turtles bleed from the mouth and nose. Necropsy shows severe liver lesions; some are black; some are mottled. The intestines show localized or entire-segment congestion and inflammation; some have fluid accumulation in the abdominal cavity. Prevention and control: 1) Control stocking density; 2) Improve the pond bottom substrate, and thoroughly clear the pond at the end of production;
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Symptoms and Prevention and Treatment Methods of White Plastron Disease in Soft-shelled Turtles
White plastron disease is a difficult and complicated turtle disease that has appeared since 1996. It is currently the most harmful turtle disease, with the highest mortality rate and the greatest treatment difficulty. If not treated in time, it can cause all of them to die. At present, there is considerable controversy over the pathogen of this disease. The reported pathogens include: 1) Bacteria: the pathogens are Aeromonas hydrophila, Proteus, and Edwardsiella tarda. 2) Virus: spherical virus with a diameter of 80nm. 3) Cross-infection: death occurs after viral infection is followed by secondary bacterial infection. The author believes that, based on the analysis of the particularly obvious effect of adding vitamins during treatment,
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Detailed Guide to Identifying Symptoms of Major Potato Diseases and Their Control Methods
I. Late blight. 1. Symptom identification. This disease is a fungal disease that affects stems, leaves and tubers. Affected parts of stems and leaves develop brown water-soaked spots, which later expand into black patches. When humid, a ring of white mold-like growth surrounds the lesions, very obvious on the underside of leaves. After tubers are affected, brown or blue lesions initially form, then expand, and the surface gradually becomes sunken, while the potato flesh beneath the lesion turns brown. 2. Control methods. Selecting disease-resistant varieties is the most economical and effective way to control late blight: such as Wushu No. 8, No. 9, No. 11, Longshu No. 3, No. 5
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Symptom Identification and Control Methods for Major Potato Pests and Diseases
The main potato diseases include: potato ring rot, potato wart disease, potato late blight, potato early blight, potato blackleg, potato bacterial wilt, and others. The main insect pests include: potato tuber moth, 28-spotted ladybird beetle, and underground pests (cutworms, white grubs, wireworms, mole crickets, etc.). Among these, three are nationally quarantined pests: potato tuber moth, potato ring rot, and potato wart disease. Main potato diseases. Potato ring rot. Field symptoms generally appear after the flowering stage, with initial symptoms showing
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How to Treat Jujube Trees with Jujube Witches' Broom Disease? A Detailed Guide to Surgical Treatment Methods
1. Basis. The pathogen of jujube witches' broom disease is a mycoplasma-like organism, which mainly lives in the phloem of jujube trees and is conducted through the tree body via the sieve tube tissue. In winter, the mycoplasma-like organism moves from the aboveground parts to the roots to overwinter, and in the following spring flows back to the branches and trunk with the sap. On this basis, surgical treatment can effectively eliminate the mycoplasma-like organism. 2. Methods (1) Trunk ring sawing. Before leaf fall of the jujube tree and before sprouting the following year, starting from a point 40 cm above the ground on the trunk, use a saw to cut ring-shaped grooves in the trunk of the jujube tree. The requirement is to saw through the cortex, but not to damage the cambium. According to the severity of the disease,
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Detailed Explanation of Treatment Techniques and Methods for Raccoon Dog Diseases
(1) Restraint methods for raccoon dogs. For manual restraint, hold a wooden stick in one hand and wave it in front of the raccoon dog's eyes to distract its attention, while the other hand seizes the opportunity to quickly grab the tail and lift it from the cage, clamping the neck under the armpit, or securing it on the ground or on an operating table. If a capture board, capture tongs, capture net, or capture snare is available, it can be used to clamp the raccoon dog's neck or enclose its entire body, and with the assistance of a helper, diagnosis and treatment can be carried out. Pharmacological restraint can also be used, namely diluting chloral hydrate with a 2% starch solution into a 10% solution for enema administration to the raccoon dog.
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