CATDOLL : CATDOLL: What are the anatomical symptoms of pullorum?

1. What are the anatomical symptoms of pullorum?

This disease is an extremely common infectious disease caused by Salmonella pullorum. Its excrement is an important medium of transmission, and it can also be transmitted vertically through eggs.

Main symptoms and lesions: Chicks refuse to eat feed, are afraid of cold, curl up, have drooping wings, are depressed or lethargic, and excrete white sticky or light yellow or light green loose stools. The anus is sometimes blocked by hardened feces and they have difficulty breathing. Adult chickens have no clinical symptoms. A few seriously infected chickens are listless and excrete yellow-green or egg white-like loose stools. The main lesions are enlarged and fragile liver and spleen with necrotic spots, dark red congestion or pale anemia in the kidneys, and peritonitis changes often occur. Ovarian atrophy and egg degeneration can be seen in laying hens, and sick chickens stop laying eggs.

2. What are the symptoms of watermelon virus disease?

Symptoms of watermelon virus disease: Watermelon virus disease mainly manifests itself in two symptoms: mosaic and fern leaves. Mosaic refers to systemic mosaic, where young leaves have dark and light yellow-green spots, which then shrink and become deformed, with shortened internodes, making it difficult to set fruit or the fruit is very small.

The fern-leaf type shows that the new leaves are linear and slender, and the young leaves are wrinkled and twisted. Both diseased plants are prone to forming deformed or dead fruits. The diseased plants die before they produce fruits.

3. What are the symptoms of garlic virus disease?

In the early stage of garlic virus disease, intermittent yellow stripes may appear on the leaves, which will later connect into yellow-green stripes. The plants are short, the leaves are bent after growth, the leaves may be twisted or cracked, dry and shrunken, the plants are short and weak, the roots are poorly developed, there are yellow spots on the leaves, and in high temperatures or droughts, there are a lot of toothworms. These symptoms are all signs of garlic virus disease.

4. What are the symptoms of apple tree virus disease?

Apple mosaic virus is a common disease of apple trees, which usually shows symptoms in spring or summer. Its main symptoms are:

1. Leaf deformation: After infection, the leaves of the apple tree will become deformed and warped. In severe cases, the leaves will become extremely twisted, affecting their photosynthesis and thus the growth and development of the apples.

2. Yellowing of leaves: The leaves may become uneven in color, turn yellow, or even turn completely yellow and fall off. As the disease progresses, the color of the leaves becomes darker and darker, turning dark green, or even turning green-purple.

3. Albino flowers: After infection, the flowers on the apple tree become visibly white, and the leaves and petals are infected, appearing white and deformed.

4. The fruit becomes smaller: The stomata of the leaves caused by the mosaic virus disease of apple trees are blocked, resulting in oxygen deficiency in the fruit. The size and shape of the fruit will be affected to varying degrees. In severe cases, it will directly lead to slow growth, deformation, or even death of the fruit.

In summary, if the above symptoms appear in apple trees, they need to be diagnosed in time and targeted prevention and control methods should be adopted to ensure the normal growth of apples and fruit yield.

5. What are the symptoms and prevention of bean virus disease?

1. Symptoms

From the appearance, the plant becomes shorter, grows slowly, the new leaves are wrinkled and mosaic, and the growth is poor.

Bean virus disease often manifests systemic symptoms, and symptoms are obvious after the diseased plants emerge. Because there are many types of pathogens that cause this disease, mixed infections often occur in the field and produce different symptoms. After the plants are infected, the leaves will have clear veins, chlorotic bands, mottled or uneven green parts, wrinkled, twisted, and deformed leaves, plant growth will be inhibited, the plant will be short, flowering will be slow or flowers will fall, flowering and pods will be significantly reduced, the pods will be short, and sometimes green spots will appear.

2. Prevention and control methods

1. Establish disease-free seed fields, select disease-resistant varieties, carefully select seeds, and cultivate strong seedlings.

2. Use dry heat or hot medicine to treat seeds to inactivate the source of toxins and reduce the incidence of disease in the seedling stage.

3. Implement crop rotation, avoid repeated planting, strengthen fertilizer and water management, and increase the application of phosphorus and potassium fertilizers. Remove diseased plants and leaves in time to reduce the source of disease.

4. Take early treatment and continuously treat aphids to reduce the transmission of insect vectors. When aphids are found, spray imidacloprid and other pesticides in time, focusing on the back of the leaves.

5. Combined with spraying foliar nutrients, adding drugs that inhibit and inactivate the source of poison is more effective than using warming drugs alone. In the early stage of the disease, spray 0.1%~0.2% potassium dihydrogen phosphate + urea + ordinary laundry soap (or black soap) in equal amounts for 3~5 times, once every 7~15 days, with dense planting at the beginning and sparse planting at the end, which helps promote plant growth and control the spread of the disease.

6. At the early stage of the disease, spray 1000 times diluted 1.5% alkanol copper sulfate emulsion, or 100 times diluted 10% mixed fatty acid aqueous solution, or 500-700 times diluted 20% morphine copper acetate wettable powder, once every 7-8 days, and spray 3-4 times in a row.

6. What are the symptoms of viral diseases of cabbage?

Chinese cabbage virus disease, also known as solitary disease or convulsion, is the earliest of the three major diseases of Chinese cabbage. The disease can occur from the seedling stage to the heart stage. When the disease occurs, the leaf bark shrinks and becomes uneven, especially the heart leaf becomes cramped, and yellow-green mosaic symptoms appear. Brown necrotic spots or stripes appear on the leaf veins, and sometimes the leaves tilt to one side. When the plant is severely shortened, it cannot heart. Although it can heart in the middle and late stages of the disease, the necrotic spots inside the leaf head will rot, and even if it does not rot, it loses its commercial value.

These symptoms of Chinese cabbage are caused by virus infection. These viruses can overwinter on the seed epidermis and weeds, and then be spread by aphids. When adverse weather conditions such as high temperature and drought occur after Chinese cabbage is sown, aphids reproduce in large numbers and spread the virus, causing serious disease. Especially before the six-leaf stage of seedlings is the susceptible period of viral diseases, and the earlier the disease occurs, the more serious the damage. Therefore, the key period for the prevention and control of Chinese cabbage virus diseases is the seedling stage and the early growth stage. Aphids must be prevented and controlled in time during these two periods. You can choose 10% cypermethrin 1500 times solution or avermectin and other agents, spray once every 5-7 days, and use it twice in a row to reduce the insect population base. Agricultural prevention and control should not be ignored. One is seed disinfection, and the other is timely removal of weeds to create an environmental condition conducive to plant growth, which can reduce the incidence of the disease.

7. What are the symptoms of cabbage virus disease?

Chinese cabbage virus disease, also known as solitary disease or convulsion, is the earliest of the three major diseases of Chinese cabbage. The disease can occur from the seedling stage to the heart stage. When the disease occurs, the leaf bark shrinks and becomes uneven, especially the heart leaf becomes cramped, and yellow-green mosaic symptoms appear. Brown necrotic spots or stripes appear on the leaf veins, and sometimes the leaves tilt to one side. When the plant is severely shortened, it cannot heart. Although it can heart in the middle and late stages of the disease, the necrotic spots inside the leaf head will rot, and even if it does not rot, it loses its commercial value.

These symptoms of Chinese cabbage are caused by virus infection. These viruses can overwinter on the seed epidermis and weeds, and then be spread by aphids. When adverse weather conditions such as high temperature and drought occur after Chinese cabbage is sown, aphids reproduce in large numbers and spread the virus, causing serious disease. Especially before the six-leaf stage of seedlings is the susceptible period of viral diseases, and the earlier the disease occurs, the more serious the damage. Therefore, the key period for the prevention and control of Chinese cabbage virus diseases is the seedling stage and the early growth stage. Aphids must be prevented and controlled in time during these two periods. You can choose 10% cypermethrin 1500 times solution or avermectin and other agents, spray once every 5-7 days, and use it twice in a row to reduce the insect population base. Agricultural prevention and control should not be ignored. One is seed disinfection, and the other is timely removal of weeds to create an environmental condition conducive to plant growth, which can reduce the incidence of the disease.

8. What are the symptoms of duck yellow virus disease?

Duck yellow virus disease (tentative name in this article) is a new acute viral infectious disease caused by Duck tembus virus (DTV) of the Flavivirus genus, with a severe decline in egg production in waterfowl as its main feature.

Clinical symptoms

In the early stage, it manifests as a reluctance to go to the water, a slight decrease in egg production, and a decrease in feed intake, which gradually develops into high fever, movement disorders, loss of appetite, decreased or even stopped egg production, and the mortality rate can reach 5% to 10%.

Anatomical symptoms

The ducks were found to have enlarged spleens, congestion in the livers, and needle-like white necrosis on the surface. The ovaries were found to have bleeding, atrophy, rupture, and mucus in the oviducts.

Precautions

Using emergency dehumidifier 800 birds/bottle of drinking water once a week can effectively prevent viral diseases in ducks.

Treatment

Duck venom 1ml/kg + cephalexin + interferon, generally one injection is enough. For severe cases, emergency treatment with interferon drinking water 800 birds/bottle can be used.

9. What are the specific clinical symptoms of circovirus disease?

Porcine circovirus disease is a type of viral infectious disease characterized by immunosuppression caused by porcine circovirus infection. Diseases and clinical symptoms associated with porcine circovirus type II include:

PMWS (Post-weaning Multisystemic Wasting Syndrome): It occurs frequently in piglets aged 6 to 8 weeks, with an incidence of 20% to 60% and a mortality rate of 5% to 35%. The disease is characterized by coughing, dyspnea, gradual weight loss, and a significant increase in mortality and culling rates 2 to 3 weeks after weaning. It infects newborn and weaned piglets, causing congenital tremors and post-weaning systemic wasting syndrome. It is a chronic wasting disease that causes slow growth, developmental disorders, decreased immunity, and susceptibility to secondary diseases (eperythrozoonosis, wheezing, toxoplasmosis, swine fever, etc.) in weaned piglets, which worsens the condition. Drug treatment is ineffective. The main clinical symptoms are as follows: initial tremor, neurological symptoms; depression, loss of appetite, weight loss, gradual weight loss; palpable lymph node swelling (such as femoral lymph nodes); dyspnea, pale skin, lesions, rough fur; autopsy can be seen in the lungs, mesentery, groin and other tissues of lymphadenitis, accompanied by lymphocyte degeneration, multiple lung lesions. Aware can be self-tested without blood draw. Wish you good health Tmall!

Treatment: Hong Kong Tianyu Blue Circle Double Peptide (add 5-10 mg of dexamethasone per 100 kg of body weight to prevent allergies) + Ceftiofur Sodium, intramuscular injection, once a day, for 2-3 consecutive days;

10. What are the symptoms of viral disease of mint?

Viral diseases of mint: Viral diseases are mainly caused by tobacco mosaic virus and cucumber mosaic virus.