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What are the prevention and control methods for abdominal distension and ulceration disease in large yellow croaker?
(1) Pathogen According to reports from Japan, it is Vibrio alginolyticus; but another source says it is Edwardsiella. (2) Symptoms The stomach sac of diseased fish is especially swollen and enlarged, and in some fish the dorsal and ventral walls rupture from the swelling, with the entire stomach sac detaching from the fish body. Large numbers of diseased fry float scattered on the water surface, unable to feed, spin in circles for several days, then sink and die. Larvae at 15-20 days of age are most susceptible, showing a peak mortality period. (3) Prevention and control methods Increase the water exchange rate, improve the rearing environment, avoid feeding Artemia nauplii alone, feed copepods earlier, strengthen the nutrition of larvae and juveniles, and strictly control water quality.
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Control Methods and Technical Key Points for Scaly Leg Mite Disease in Chickens
Scaly leg mite disease in chickens is a condition caused by sarcoptic mites, often presenting as two forms: depluming itch and scaly leg. 1 Pathogen and Symptoms The pathogen of depluming itch in chickens is the scaly leg mite (Knemidocoptes mutans), which is round or oval in shape and about 0.3 mm long. This mite mostly invades the skin along the feathers and parasitizes the base of the feathers, causing inflammation. Lesions are mostly seen on the back, wings, rump, and thighs of chickens, with severe localized itching and feather loss, hence the name depluming itch. Affected chickens peck and pull at their feathers, causing feathers to fall out, the skin to become red, and
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Diagnosis and Treatment of Porcine Respiratory Disease Complex
Porcine respiratory disease complex is a highly pathogenic infectious disease caused by mixed infection with various viruses, bacteria and other microorganisms, primarily manifesting as respiratory symptoms and lesions in pigs. The pathogens causing the disease are not identical across different pig farms. Primary infections may include PRRSV, PCV-II, PRV, SIV, HCV, the pathogen of porcine infectious atrophic rhinitis, and Mycoplasma; secondary infections may include Streptococcus, Actinobacillus pleuropneumoniae, Haemophilus parasuis, Eperythrozoon, Salmonella, etc.
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How to prevent and treat pig lice disease? Methods every pig farmer must see
Pig lice disease, also known as pig blood lice disease, is an external parasitic disease caused by the pig liver louse parasitizing the surface of the pig's body. Although it cannot cause painful death, it still has a considerable impact on the growth and development of live pigs, especially a serious impact on piglets. The development cycle of pig lice is short and spread is rapid. After male and female lice mate, the female louse, after sucking enough blood, lays eggs, producing 3---4 eggs per day, which are attached to the hair and skin with secreted mucus; young lice hatch in 1215 days, and become adult lice in 1014 days, with a development cycle of 2332 days. Because
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What disease does a chicken have if it passes white watery droppings?
Based on your description, it may be pullorum disease. Pullorum disease is an infectious disease caused by Salmonella pullorum. After newly hatched chicks are infected, they show listlessness, sensitivity to cold, drowsiness, refusal to eat, and difficulty breathing. The vent is often blocked by white pasty droppings, making defecation difficult. If not treated promptly, most die within 2 weeks. Chicks that recover become carrier birds. Adult chickens often have latent infection and generally show no clinical symptoms; in hens, only reduced egg laying or no egg laying is seen, the ova are shrunken, and the contents are greasy in appearance, with severe cases turning pale bluish or lead-black, and sometimes yolk peritonitis also occurs;
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How to prevent and treat swine respiratory diseases? Lecture 3 detailed explanation
4. Swine influenza Swine influenza (SI) is an extremely contagious respiratory infectious disease of pigs, characterized by sudden onset, sudden fever and other cold-like symptoms, with recovery being just as rapid as the onset. SI is caused by an influenza virus, of the same genus as the influenza viruses that infect humans, and this virus has the property of being able to infect both humans and animals. The appearance of SI in a herd is usually related to the introduction of new pigs into the farm. (1) Symptoms: Typical SI presents as a sudden severe outbreak affecting the entire herd. Within one or two
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Control Methods and Key Technical Points for Pests and Diseases of Honeysuckle
Honeysuckle, also known as silver flower or Japanese honeysuckle flower, is the dried flower bud of plants in the Caprifoliaceae family and several plants of the same genus. It has the function of clearing heat and detoxifying, and is suitable for diseases such as seasonal febrile diseases with fever, wind-heat common cold, sore throat, pneumonia, dysentery, and carbuncles, swellings, sores and ulcers. It is a commonly used traditional Chinese medicinal material, with annual national sales reaching 5.5 to 6 million kg. Honeysuckle is produced in most provinces and regions across the country, among which Shandong, Henan and Guangxi have the largest output and the best quality. Honeysuckle has relatively many pests and diseases, and doing a good job of prevention and control is the key to increasing honeysuckle yield and ensuring market supply
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What are the methods for controlling pests and diseases of honeysuckle?
The main pests and diseases of honeysuckle are honeysuckle brown spot disease, which harms the leaves and occurs from July to August. After the disease develops, the spots on the leaves are round or polygonal due to the restriction of leaf veins, yellow-brown, and in humid conditions there is a gray mold-like substance on the underside of the leaves. Effective control methods are to promptly remove diseased branches and leaves, strengthen cultivation management, and increase the application of organic fertilizer to enhance disease resistance. In addition, spraying Bordeaux mixture at a ratio of 1:1.5:200 in the early stage of the disease can effectively control brown spot disease. The main insect pests of honeysuckle are aphids and coffee tiger longhorn beetles. To control aphids, 40% dimethoate emulsifiable concentrate 10
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Occurrence Patterns and Integrated Control Methods of Pests and Diseases in Goji Berry
Goji berry is a deciduous shrub of the genus Lycium in the Solanaceae family. Its fruit is called goji berry (Lycii Fructus), and its root bark is called Digupi (Lycii Cortex); both can be used as medicine. The tender stems and leaves are eaten as vegetables. It is distributed throughout China, mostly in the wild. The related species Lycium barbarum (Ningxia goji) is mostly cultivated; its fruit is called Xi goji or Gan goji and is used medicinally, mainly produced in Ningxia, Gansu and Inner Mongolia. Goji berry suffers from pests and diseases at every stage of growth, causing great economic losses to production. The occurrence and control methods of goji berry pests and diseases are introduced as follows: 1 Diseases 1.1 Black fruit disease (anthracnose) Main
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Comprehensive Pest and Disease Control Methods and Technical Key Points for Goji Berry
Goji berry, as a traditional Chinese medicinal herb, not only has high medicinal value, but its fruit, leaves, stems, and roots can also be eaten or drunk. With the improvement of people's living standards, in recent years more and more varieties of goji berry wine, pastries, and other products have been developed, and the usage is also increasing. The commonly occurring pests and diseases of goji berry mainly include: aphids, goji berry leaf beetles, whiteflies, cotton bollworms, gall mites, and powdery mildew, anthracnose, leaf spot disease, viral disease, etc. The comprehensive control technical measures are introduced as follows. Control principles: prevention first, combining prevention and control. Strategically, focus on healthy cultivation and biological control,
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