Symptoms of gastroenteritis in St. Bernard dogs:

1. The main symptoms of gastritis are depression, loss of appetite, and frequent vomiting. The vomitus is often mixed with blood, and the patient has an increased desire to drink. Vomiting occurs after drinking a large amount of water. Severe vomiting in St. Bernard's can lead to dehydration. The abdominal wall is tense upon palpation and there is obvious tenderness reaction.

2. Enteritis mainly manifests as severe abdominal pain. At the beginning of the disease, intestinal peristalsis is hyperactive, accompanied by tenesmus and severe diarrhea with stools mixed with mucus and blood. In the later stage, the abdomen will be muddy and the feces will be foul-smelling, and the affected dog will have loose anus and defecation incontinence. The body temperature reaches 40~41℃ or drops below normal temperature. Visible mucosal cyanosis and sunken eyeballs. When the condition worsens, the limbs become cold, the abdominal pain decreases, and eventually the person falls into drowsiness, convulsions and dies.

Methods to prevent and treat gastroenteritis in St. Bernard dogs:

1. Dogs suffering from simple gastroenteritis should be fed and managed better. At the beginning of the disease, one should fast and limit drinking water, and then give a small amount of meat juice or vegetable soup, etc., and then gradually increase the food intake.

2. In the early stage of the disease, in order to eliminate gastric contents, 5-10 mg of apomorphine hydrochloride can be injected subcutaneously, or 0.1-0.5 mg of sulfuric acid can be diluted into an 11% solution for enema, etc. For dogs with persistent diarrhea, 0.5 to 1.0 grams of tannic acid protein or 0.2 to 0.6 grams of hyponitrite can be taken orally, 2 to 3 times a day.

3. St. Bernard dogs with obvious dehydration should be infused intravenously with lactated Ringer's solution, or mixed with Ringer's solution and 5% glucose solution. At the same time, add sodium bicarbonate, vitamin C, vitamin B and vitamin K.

4. Toxic gastroenteritis should focus on detoxification. Infectious gastroenteritis, antiserum and symptomatic and maintenance therapy are used. Parasitic gastroenteritis is mainly treated with deworming. Complemented by symptomatic and supportive therapy.