chicken typhoid
Chicken typhoid is a septic infectious disease that occurs in adult and young chickens, which is characterized by pathological changes of liver, spleen and other parenchyma organs and diarrhea. The disease is caused by Salmonella typhimurium.
[symptoms] mainly occurred in young and adult chickens over 3 weeks old. The symptoms of diseased chickens were lethargy, loose feathers, drooping head and no food. The more characteristic symptoms are diarrhea, discharge of light yellow to green thin feces, sticking of feathers around the anus, frequent drinking water, such as peritonitis, standing like a penguin. Chronic diseased chickens are emaciated, anemic, pale with crown and beard.
[autopsy] the liver and spleen were enlarged by 2-4 times, the surface of the liver was yellow or bronzed, and there were white or yellowish necrotic spots on the liver and myocardium. The gallbladder is dilated and filled with green oily bile. Sometimes the pericardium adheres to the heart.
[main points of diagnosis]
(1) in young or adult chickens over 3 weeks old, the diseased chickens were anemic with pale crown and beard.
(2) excretion of yellow-green sparse feces, 2-4 times of hepatomegaly and splenomegaly, and bronzed liver.
[prevention]
(1) the seriously sick chickens should be eliminated in time, the lightly diseased chickens should be isolated and treated, and the henhouses and venues should be thoroughly disinfected.
(2) dysentery was used as a preventive drug, and the feed was mixed at the proportion of 0.02-0.04%. Each chick drank 0.01 grams of streptomycin in drinking water every day, which also had a better effect.
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