Arid stomach disease is an important disease in the digestive system of ruminants, including atrophic gastritis and atrophic stomach ulcers, abdomen swelling, abdomen obstruction, and abdomen dislocation. So what are the common peripheral diseases of cows? How should farmers control cow disease?
First, anterior stomach or abdomen obstruction syndrome (vagal dyspepsia or Hofund syndrome)
1. Characteristics of the normal stomach dysfunction of the cow's anterior stomach, abdomen or all four stomachs, causing vagal dyspepsia or Hoferend syndrome. Since the liquid mainly accumulates in the tumor and the net stomach, the left abdominal wall is swollen from the outline of the abdominal wall.
2. The typical enlarged part of the clinical case occurs in the upper left and lower right parts of the abdominal rib. Chronic traumatic network gastritis causes vagal dysfunction, leading to tumor network gastric dilatation is the most common form of this disease. Severe rumen enlargement is evident in the upper left axilla and the lower right rib (so-called apple pear shape). Simple valvular obstruction caused by net gastric peritonitis (relative to the second gastric obstruction) is very rare. Gastric occlusion is often secondary to obstruction caused by the net wall abscess (foreign matter is iron wire) and focal collateral peritonitis. Mechanical causes such as infiltration of sputum near the pylorus can also cause obstruction of the stomach. A laparotomy can confirm the disease.
3, differential diagnosis and prevention and treatment of this disease need to be differentiated from chronic traumatic network gastritis, peritonitis, rumen hernia, true stomach obstruction and obstruction of the valve. Treatment points: laparotomy and ruminal incision can determine the cause. The emptying of the rumen contents can temporarily improve the rumen motility, and the symptomatic treatment often has a poor prognosis.
Second, wrinkle ulcer
1. Characteristics Aridized gastric ulcer occurs in adult cows, beef cattle and yak. Some adult sick cows are secondary to other diseases such as invasive lymphosarcoma and systemic infections (such as BVD and malignant catarrhal fever). Although the cause of a high-yield cow's atrophic ulcer is unclear, it is often associated with an excessive ratio of stress and concentrate. Yak can have multiple ulcerated ulcers. There are 4 types of ulcers: type I has no obvious clinical symptoms; type II is hemorrhagic ulcers if ulcers continue to cause progressive anemia; type III and type IV cause localized or diffuse peritonitis with pain symptoms, type IV Always fatal. The diseased animals are depressed, the milk production is reduced, the body temperature is low, and general anemia is common.
2, clinical case a cow with type III (perforation) atrophic peritonitis caused by atrophic ulcer, abdominal pain symptoms, black tar-like feces. This stool contains a large amount of digested blood. Severe blood loss in the abdomen causes the death of the cow. After the death, a large area of ​​ulcers, severe bleeding and diffuse atrophic inflammation were seen. The lesion is similar to the yak abdomen ulcer, and the possible outcome is localized or diffuse peritonitis. The healing ulcerated lesion forms scar tissue and the abdomen wall shrinks into a star shape and there is still bleeding.
3, differential diagnosis and prevention of the disease This disease needs to be differentiated from traumatic network gastritis, atrophic gastritis and atrophic lymphoma (lymphoma). Coping therapy is recommended for the treatment of perforated ulcers with broad-spectrum antibiotics. Infusion therapy for dehydrated and hemorrhagic ulcers can also be performed. However, in many cases, infusion causes an increase in blood pressure, which further exacerbates bleeding at the ulcer site.
Third, atrophic gastric lymphoma (lymphsarcoma)
1. Etiology and pathogenesis Bovine lymphosarcoma is caused by bovine leukemia virus (BLV). The incidence of cancer varies from region to region. Local epidemic leukemia infects adult cattle. Other common infected tissues include the lymph nodes, heart and posterior ocular tissues.
2, prevention measures must be confirmed by histology. It is difficult to control the disease in the herd, but regular serological tests can help exclude positive ones.
  Fourth, atrophic stomach surgery
In the area where cattle farms are intensively managed, it is common for cows to move left and right (less common). A twist to the right side of the abdomen is a serious secondary or complication of the right abdomen. Most of these mechanically displaced cases occur in early lactation, rumen, and reticular relaxation of high-yielding dairy cows. In the weeks before this, many cows had perinatal diseases such as placenta, ketosis, metritis, mastitis and food rumen acidosis.
1. Wrinkle of the left side of the stomach (LDA) The displaced wrinkles are almost entirely under the left rib arch and can be examined by percussion and auscultation. The posterior dorsal portion can protrude beyond the last rib to form a distinct, soft ridge that can be separated from the rumen located in the armpit by rectal examination. LDA has characteristic clinical symptoms: cattle often have a sudden loss of concentrate and a sharp drop in milk production. Other cattle suffer from moderate loss of appetite, weight loss, and secondary ketosis. As the feeding reduces the body condition slowly, the protruding abdomen becomes more and more obvious in the left abdomen. Differential diagnosis and treatment points: the disease needs to be differentiated from the right side of the abdomen, cecal torsion and primary ketosis. Conservative therapy can be used to correct by flipping, limiting feeding in a small space and increasing the intake of roughage can cure more than 30% of cases. The disease is recommended for surgical treatment.
2, the right side of the abdomen (RDA) clinical symptoms similar to LDA but the bulging stomach is on the right side, can be checked through the right side of the percussion. The abdomen that swells with the cow can be seen through a vertical incision in the right abdomen, about 7 cm behind the last rib. The rest of the abdomen is inside the rib arch. The omentum can be seen on the posterior side of the enlarged abdomen, and the duodenum is wrapped in the omentum. Differential diagnosis and treatment points: This disease needs to be accurately identified with LDA, small intestine and cecal torsion, ketosis, abdomen ulcer. Medication (anti-inflammatory, antispasmodic) and controlled diet may be slow for mild cases of RDA. More severe cases require surgical drainage to fix the abomasum. Most diseased cows recover slowly after removing large amounts of gas and liquid.
3, abdomen torsion accompanied by wrinkled stomach expansion of the abdomen torsion clinical manifestations of severe: suffering from cattle depression, sometimes lying, appetite abolished, dehydration, shock, rectal emptiness. In the right abdomen, you can see the dilated stomach, or you can check it through the rectum. The post-mortem examination specimens of the abdomen, tumor-net and duodenum of the cattle showed that the abomasum and the stomach were completely twisted. The liquid in the abdomen exceeds the normal amount (normally 10~20L).
Treatment points: Most cases should be eliminated. If the treatment should correct the body fluid disorder, the liquid is evacuated and the abdomen is reset.
Once the farmers discover these diseases, they must promptly diagnose symptomatic treatment, so as to avoid the loss caused by the milk production after the cows are sick.
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