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How is swine vesicular disease diagnosed and treated?
A cow's ocular conjunctiva is covered by the eyelids. To examine the conjunctiva, there are generally two methods: first, press open the lower eyelid with your thumb to expose the conjunctiva. Second, grasp the cow's horns with both hands and forcefully turn the head to one side; the cow will then look sideways, exposing the conjunctiva. In a healthy cow, the ocular conjunctiva is pale pink. Redness of the conjunctiva is a sign of circulatory disturbance and may indicate eye trauma, conjunctivitis, or various acute febrile infectious diseases. A blue-purple conjunctiva may indicate pneumonia or heart failure
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Detailed Explanation of Prevention and Treatment Methods for Porcine Respiratory Disease Complex
Regarding the situation in a pig farm in western Shandong where respiratory disease was more severe in growing-finishing pigs than in nursery pigs, quite a lot of medication was used for control without achieving good results, which is what farmers call: "spent good money but didn't get good results." Since 2005, piglets in many pig farms have developed pneumonia, coughing and cyanosis of the ears in some pigs. Growing pigs over 25 kg mainly showed coughing and panting as well as dermatitis. Compared with 2005, when the disease onset was mainly characterized by diarrhea symptoms, it has now shifted to being mainly characterized by respiratory symptoms along with coughing and spraying of feces. In the hot climate of summer and autumn
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Comprehensive Measures to Increase the Weaning Weight of Piglets
If weaned at the same age, the greater the individual weaning weight of the piglet, the stronger its constitution, and correspondingly the piglet has strong vitality, gains weight quickly after weaning, has a high feed conversion rate, and the economic benefits obtained are also higher. Therefore, taking comprehensive measures to strive for the maximum individual weight of weaned piglets has become one of the keys to improving the economic benefits of pig farming. 1. Select sows with a long body shape, and carry out crossbreeding of sows to increase the birth weight of piglets. The birth weight of piglets determines, to a certain extent, the strength of the piglets' vitality and their
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How to prevent and control cotton seedling diseases? Take multiple measures to ensure strong seedlings
Because rain kept falling continuously during the cotton sowing period and after emergence, this year's seedling death is more serious than in previous years, and the most severe cases have already begun to be destroyed and replanted. 1. Main symptoms After cotton seedlings emerge, yellow-brown lesions appear at the base of the stem (where it meets the soil surface), gradually expand, become sunken and rotten, turn dark brown in color, and the cotton seedlings wither and die. This is typical "damping-off," commonly known by cotton farmers as "black neck" disease. 2. Causes of seedling death 1. Early sowing date and low temperature. According to forecasts from the meteorological department, the temperature in April 2008 was on average
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Control Methods for Four Types of Diseases in Edible Fungi
1. Brown rot, also known as bubble disease, wet bubble disease, etc. It mainly affects button mushrooms, straw mushrooms, oyster mushrooms, etc. The disease is caused by a fungus called Mycogone perniciosa. The main characteristics are: the conidia and chlamydospores of Mycogone perniciosa only infect the fruiting bodies, not the mycelium. When the fruiting body is lightly infected, the stipe swells into a bubbly deformity, hence the name wet bubble disease. However, at different stages of fruiting body development, the symptoms also differ. When the fruiting body is infected before differentiation, an irregular mass of tissue resembling a hard-skinned puffball appears, covered with a layer of white cottony mycelium, and gradually
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Emergency measures for pests and diseases in edible mushroom production
In the winter of 2007, infectious diseases, physiological diseases and insect pests of edible mushrooms occurred severely. The affected varieties also spread from oyster mushroom, shiitake, button mushroom, willow mushroom and shaggy ink cap to white ferula mushroom, king oyster mushroom, tea tree mushroom, enoki mushroom, etc. After brief classification and arrangement, the author summarized the main pests and diseases and their treatment measures, hoping to be helpful to cultivation. Infectious diseases Yellow mushroom: mostly occurs on varieties such as oyster mushroom, white ferula mushroom, king oyster mushroom and willow mushroom. It manifests as the caps of young mushrooms turning yellow, gradually expanding, until the mature mushroom stage, when the color becomes more intense, and in some cases slightly lighter, with the yellow
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Symptoms and Control Methods of Brown Spot Disease in Edible Fungi
Damaged crops: Edible fungi. Damage symptoms: Does not infect the mycelium, only infects the fruiting bodies, but can grow along mycelial strands, forming relatively dry grayish-white tissue masses. Infected mushroom buds stop differentiating; after young mushrooms are infected, the caps become smaller, the stems become thicker and brown, forming deformed mushrooms; after the fruiting bodies are infected in the middle to late stages, many pinhead-sized, irregular brown spots appear on the caps and gradually expand into grayish-white depressions. Diseased mushrooms often have their surface layer peeling or cracking, do not rot, and have no foul odor. The disease course is about 14 days. Classification attribute: Verticillium
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Detailed Guide to the Prevention and Control of Firmiana Pests and Diseases
The methods for preventing and controlling Firmiana pests and diseases are: 1. Remove and burn the diseased fallen leaves, and spray Bordeaux mixture or chlorothalonil and other chemicals during the disease outbreak period. 2. Spray soap-petroleum emulsion in early spring to kill the Firmiana psyllid. 3. Manually capture and kill the longhorn beetle adults, and inject fenitrothion and dichlorvos into the tunnels. 4. For other pests, spray any one of the chemicals dimethoate, dichlorvos, or trichlorfon during the nymph or larval stage.
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Symptoms and Control Methods of Red Pine Bark Rot and Resin Flow Disease
[Distribution and Damage] This disease occurs in red pine (Pinuskoraiensis) plantations throughout the three northeastern provinces. In the Yanbian area of Jilin Province, the cities (counties) of Yanji, Hunchun, Helong, Wangqing, Dunhua, Antu, Longjing and others have relatively severe incidence, with a general incidence rate of 20%-30%, severely affected stands at 50%-60%, and in individual stands at the Mao'ershan Forest Farm in Yanji City, the incidence rate reaches as high as 98.6%. The pathogen attacks the phloem and cambium of the trunk and lateral branches of young red pines, even penetrating deep into the surface xylem of the sapwood, causing the tissue to rot and die with a brown discoloration
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Introduction to Brown Spot Disease of Southern Magnolia
Symptoms: The pathogen mainly infects the leaves. On the surface of diseased leaves, small light brown or yellow spots first appear, then expand into round or irregular lesions, 5-12 mm in diameter, with dark brown edges and grayish-white centers, on which many small black dots are borne. Adjacent lesions may merge with each other into irregular large necrotic areas. The disease generally begins in summer, and damage is more severe in August-September. Pathogen and current disease status: Southern magnolia brown spot disease, also known as leaf spot disease, is a common disease of southern magnolia. It occurs in all regions of China where southern magnolia is cultivated, with more severe occurrence in Suzhou, Nanjing, Wuhan,
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