CATDOLL : CATDOLL: What are the symptoms of bursal disease in chickens?

1. What are the symptoms of bursal disease in chickens?

Infectious bursal disease is an immunosuppressive, highly contagious disease that seriously harms chicks. The initial symptoms include some chickens pecking at the feathers around their anus, followed by diarrhea and white sticky or watery stools. Some chickens have slight tremors, stagger when walking, and unstable gait. As the disease progresses, the appetite decreases, the wings droop, the feathers stand upright and dull, and in severe cases, the heads of chickens hang to the ground, the eyes are closed, and they are in a state of lethargy. After 72 hours of infection, the body temperature often rises by 1 to 1.5°C, and then drops by 1 to 2°C. In the later stage, the sick chickens feel cold when touched. At this time, due to severe dehydration, the claws are dry, the eye sockets are sunken, and finally they die of extreme exhaustion. For more information, it is recommended that you visit the official website of CEVA, France.

2. What are the symptoms of staphylococcal disease in chickens?

Staphylococcus aureus mainly occurs in young chickens aged 35 to 60 days, and can occur all year round, with summer and autumn being the most common seasons. It is mainly transmitted by trauma, but can also be spread through direct contact and air. Chicks are infected through the umbilical cord, and fowl pox can cause infection.

When young chickens are infected with this disease, they mostly show acute septicemia, with high morbidity and mortality rates. Chronic cases mostly show arthritis type, toe tumor type, eye type, omphalitis type, and mixed type.

Acute septicemia: mostly occurs in young chickens between 40 and 60 days old, rarely in adult chickens. The disease is rapid, the course is short, and the mortality rate is high. The mortality rate of infected chickens is 20% to 50%. The sick chickens have a fever, poor spirits, shrink their necks, droop their wings, are unwilling to walk, and seem to be in a semi-sleeping state. Some sick chickens have diarrhea and excrete gray or purple-green loose feces. The skin on the chest, abdomen and inner thigh of sick chickens is purple or purple-black, with subcutaneous edema and a sense of fluctuation when touched. Local feathers fall off when touched by hand. Subcutaneous fluid accumulates and can rupture on its own, oozing brown or purple-red liquid that sticks to the surrounding feathers. Some sick chickens have bleeding spots and necrotic foci of varying sizes on their skin, and scabs form locally.

Arthritis type: mostly occurs in chicks, and is a chronic disease with a course of about 10 days. Inflammatory swelling occurs in multiple joints of sick chickens, especially in the toes, shins, hips, elbows, wing tips and claws. Sick chickens limp, cannot stand, and often crouch motionless. Due to difficulty in eating, sick chickens gradually lose weight and eventually die of exhaustion.

Toe tumor type: Toe abscess is another type of staphylococcal disease in chickens. It is characterized by a spherical abscess formed on the soles of the feet and surrounding tissues of sick chickens due to bacterial infection, ranging in size from soybeans to walnuts. As the inflammation develops, it can spread to the tissues between the toes and deep tissues, causing a large amount of inflammatory exudate and necrotic tissue to accumulate in the deep tissues. Over time, the exudate solidifies and dries, turning into a cheese-like substance, and some sick chickens break and form ulcers on the soles of their feet. Sick chickens are lame, have a reduced appetite, and suffer from poor growth and development.

Omphalitis type: mostly occurs in chicks under 1 week old, with a short course and high mortality rate. Chicks are mostly caused by incomplete closure of the navel, which manifests as a distended abdomen, inflamed and swollen navel, hard local texture of yellow-red or purple-black, half-closed eyes, and depression, commonly known as "big belly button". The course of the disease is 2 to 5 days. The pathological changes are mainly swelling of the navel, which is purple-black, dark red or black-red liquid under the skin, and the skin around the umbilical cord is porridge-like or tofu-like, sometimes with flocs. The subcutaneous cells of the navel are infiltrated with purple-red exudate. There is light red exudate in the abdominal cavity, and organs such as the liver and spleen are congested, degenerated or bleeding. The yolk is poorly absorbed and is yellow-red or dark gray liquid mixed with flocs.

Eye shape: Sick chickens are depressed, with rough feathers and eyes tightly closed. Within 2 to 3 days, one or both eyelids turn green, the head is swollen, the eyelids are swollen and adhered, there is a lot of secretion in the corners of the eyes, the eyes are blind, and they die soon. Autopsy shows light red exudate under the eyelid skin, swollen and cloudy cornea, enlarged liver with congestion, small hemorrhage spots, and turbid pericardial effusion.

Pneumonia type: It is a newly discovered disease type in recent years, mostly occurring in growing chickens over 50 days old, with two types: simple lung type and mixed type, with a mortality rate of over 10%. The main manifestations are dyspnea, pulmonary edema, congestion and pulmonary consolidation, and severe cases have black and purple gangrene-like lesions in the lungs.

Hepatitis type: mostly occurs in adult chickens, with edematous dermatitis under the skin, stiff legs, lameness, ruffled feathers, diarrhea, purple-purple beards and combs, and sometimes swelling of tendon sheaths and joints. If it occurs in laying hens, the egg production rate will drop significantly. Pathological changes often include enlarged liver, purple-red color, and pattern changes. In cases with a slightly longer course of the disease, there are white necrotic spots on the liver.

Mixed type: often occurs when there is an epidemic in the chicken farm and staphylococcal infection occurs simultaneously.

3. How do you describe the appearance of a chicken?

Although its eyes are small, they are very bright, like the eyes of an eagle, which is scary. Its pointed beak hurts people very much. Its tail feathers are black and curled upwards. It runs very fast, like a mighty general.

4. What are the symptoms of erythroderma?

Answer: Erythroderma mainly refers to the appearance of large areas of red lesions on the skin. In some cases, thin red scales can be seen above the red lesions. This type of erythroderma is mainly secondary to psoriasis or other allergic diseases. Due to improper treatment, skin lesions recur and cause this situation. In the vast majority of patients, routine blood tests show a decrease in albumin and a significant increase in eosinophils.

5. What are the symptoms of thoracic spondylosis?

Thoracic spondylosis will cause symptoms such as pain, swelling, and difficulty breathing. Thoracic spondylosis is mainly caused by not paying attention to daily posture. It needs to be treated in a regular hospital. Non-steroidal analgesics can be taken for treatment. For specific medication, follow the doctor's instructions. It can be combined with physical therapy, such as Chinese medicine fumigation, ultrasound and other treatments.

6. What are the symptoms of pigeon breast disease?

Pigeon chest disease is a common disease. Its main manifestations are sternal protrusion and flat chest walls on both sides. If the condition is mild, it just looks unsightly but will not affect the health of the body. However, if it is more serious, it can reduce the volume of the chest cavity and affect the development of the lungs, thus leading to some lung diseases. Pigeon chest disease is generally caused by rickets, which is mainly caused by a lack of vitamin D and calcium.

7. What are the symptoms of decompression sickness?

Symptoms of decompression sickness include itching and burning of the skin. Most cases will experience limb pain. Mild cases may include soreness after exertion, while severe cases may present with throbbing, stabbing, or tearing pains that are unbearable. Most damage to decompression sickness occurs in the spinal cord, where blood perfusion is poor, especially in the thoracic segment, which has less blood supply. When there is a large amount of gas embolism in the blood circulation, it can cause cardiovascular dysfunction, such as increased pulse rate, mucosal cyanosis, etc. In severe cases, hypovolemic shock may occur. There are other symptoms as well.

8. What are the symptoms of brucellosis?

After people contract brucellosis, the main symptoms include fever, sweating, inflammation of the reproductive system, pain (mainly in large joints and muscles), fatigue, etc., and severe loss of ability to work. In the acute stage, patients have fever, chills, sweating, fatigue, migratory joint pain and loss of appetite.

9. What are the symptoms of migraine?

The main clinical manifestation of head wind disease is a chronic paroxysmal headache disease. This disease has a long course, is difficult to cure, and is prone to relapse. Head wind disease is often mentioned in parallel with headache in ancient medical books, which is equivalent to primary headaches such as migraine and tension headache in modern medicine. In addition to the discomfort of headache, head wind disease can also affect sleep and daily life.

10. What are the symptoms of konjac disease?

Symptoms are mosaic, yellowing, dwarfing, stunting and deformation.

1. Leaf flowering: The most common symptom in konjac, characterized by uneven leaf color, forming irregular green, light green, yellow-green or yellow parts. The outlines of the different color parts are very clear.

2. Yellow: Konjac refers to the whole plant, the whole leaf or a part of the leaf turning into a uniform yellow color.

3. Dwarf: This means that the growth of the whole plant of the konjac is inhibited, the plant is short, and the proportions of each part are normal. After planting plants of the same size, the diseased plant is shorter than the solid plant.

4. Deformity: The deformity of konjac leaves is characterized by irregular leaf surfaces, leaves that twist upward or downward parallel to the main vein, and leaves that twist upward or downward perpendicular to the main vein. Another change in leaf shape is that the leaves become smaller or narrower, deep cracks appear in the leaves, and the development of leaf tissue is inhibited, leaving only the veins. The deformity of the bulb is characterized by the formation of tumors in the bulb.