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What are the pathological changes of aflatoxin poisoning in pigs?
In acute cases, anemia and hemorrhage occur, with massive bleeding in the thoracic and abdominal cavities, and petechial spots often on the serous membrane surfaces. Hemorrhage occurs in the subcutaneous muscles in front of the thigh and under the scapula. The liver is enlarged with bleeding points. In the part of the liver adjacent to the serous membrane there are pinpoint or ecchymotic hemorrhages, obvious hemorrhages are common on the epicardium and endocardium, and hemorrhages are often present throughout the body muscles. In chronic cases, there is proliferation and sclerosis of the liver bile ducts, yellow fatty degeneration of the liver, white spots or necrotic lesions on the liver surface, and effusion in the thoracic and abdominal cavities. The renal cavity is pale and swollen. The systemic lymph nodes are congested and edematous.
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How to prevent and treat highly pathogenic porcine reproductive and respiratory syndrome (PRRS)? A detailed explanation of the technical key points
This disease is a severe viral disease of pigs that has emerged in recent years, an acute highly lethal epidemic disease caused by a variant strain of porcine reproductive and respiratory syndrome virus. The virus is extremely contagious. In infected pig farms, the morbidity rate of piglets can reach 100%, the mortality rate can reach more than 50%, and the abortion rate of sows can reach more than 30%. It is also characteristic that growing-finishing pigs can develop the disease and die. 1. Pathogen: The pathogen of this disease is porcine reproductive and respiratory syndrome virus, caused by Lelystad virus. 2. Epidemiology
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Pathological Analysis and Control Techniques for Diseases of the Tea Tree Mushroom
The tea tree mushroom (Agrocybe aegerita), also known as the tea mushroom, is a fashionable and rare mushroom variety that has become increasingly popular in domestic and international markets in recent years, emerging as a highlight among cultivated varieties. However, because the mycelium and fruiting bodies of this mushroom contain an almond-like aroma, they tend to attract a relatively high number of pests and diseases. Most of these are caused by infection from pathogenic fungi and insect pests, and are known as infectious diseases. Growers often fail to properly identify the disease symptoms and pathogens, leading to blind application of chemical pesticides. As a result, not only is effective control not achieved, but the mushroom bodies are harmed, product pesticide residues exceed standards, and cultivation returns
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Symptoms and Pathological Features of Snake Venom Poisoning in Animals
Snake venom poisoning is an acute toxic disease caused by venomous snake bites in animals, in which the venom enters the body through the wound and causes hemolysis, paralysis of sensory nerve endings and shock as its characteristic features. It can occur in all kinds of animals, and is commonly seen in grazing animals and dogs. 1. Clinical symptoms The sites where animals are bitten by venomous snakes are mostly the lips, nose tip, face and lower parts of the limbs. In horses, cattle and sheep, the bite sites are mostly near the hock joint or fetlock joint, while in pigs and dogs they are mostly on the limbs and nose tip. The closer the bite site is to the central nervous system and to areas rich in blood vessels, the
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Is Organic Tea Good? Mingjian Organic Tea Industry Will Return to the Path of Glory
Organic tea sales had been falling sharply due to pesticide residues from years ago. Recently, a plant doctor team has lent its support to organic Ruby tea, and the Mingjian tea industry is returning to the path of glory. Is this true? Let's take a look. Mingjian Township is mostly made up of smallholder farms and has always taken pride in its tea, but unfortunately, several years ago an outbreak
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What kind of bacterium is Streptococcus suis? Understanding the characteristics of this pathogen
Streptococcus suis belongs to the genus Streptococcus. The cells are round or oval, less than 2.0 mm in diameter, generally arranged in chains or in pairs, and stain Gram-positive. The colonies are small, grayish-white and translucent. Most pathogenic strains are capable of hemolysis. Streptococcus suis has 35 serotypes (1-34, 1/2) as well as some untypeable strains. Among them, the four serotypes 1, 2, 7 and 9 are highly pathogenic. Muramidase-released protein (MRP) and extracellular factor (EF) are
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What varieties of Spatholobus suberectus are there? Detailed introduction to common varieties
What varieties of Spatholobus suberectus are there
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A Detailed Guide to the Planting Techniques and Methods of Spatholobus suberectus
Planting Techniques for Spatholobus suberectus
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What to Do When Anthurium Roots Rot, Leaves Turn Yellow, and the Spathe Turns Black
The roots of the anthurium are the main part through which it absorbs nutrients and water. Once they rot, the plant's growth will slow down, and if the rot is severe, it may even cause the plant to die. Therefore, when growing it, you must avoid this situation. But what should you do if the anthurium roots rot? Let me tell you the causes and solutions.
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How to grow Spathodea campanulata (African tulip tree)? Detailed guide to care precautions
I. Common diseases Damping-off is the most important disease of Spathodea campanulata (African tulip tree), occurring mainly during the rainy spring season and causing severe damage. Both mature Spathodea campanulata trees and seedlings are affected by this disease. The main symptom is the appearance of dark brown lesions on the affected parts.
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