Animal anatomy, histology, pathological anatomy

Pathological anatomy.The corpses of animals killed by fire quickly decompose. Often bloody fluid is released from natural orifices. The visible mucous membranes of the nose, mouth and conjunctiva are cyanotic. The wool is easily pulled out. The subcutaneous tissue in the head, neck, dewlap, and often in other places is saturated with serous-hemorrhagic infiltrate with gas bubbles. Blood in peripheral vessels is not clotted. The mucous membrane of the pharynx, trachea and bronchi is severely hyperemic. The trachea is filled with foamy mucus. In the abdominal and, often, in the chest cavity, up to1 lstraw-colored liquids. The lungs are filled with blood and swollen.

Dotted dark cherry-colored hemorrhages are found on the pericardium and endocardium. The heart muscle is flabby, grayish-yellow in color; the fatty layers in the furrows are saturated with bloody exudate. A yellowish-bloody gelatinous fluid accumulates in the cardiac membrane. The spleen usually does not change, but sometimes contains gas.
The liver is clay-colored, contains necrotic foci, is filled with blood, the capsule is easily removed. With a deep incision of the liver, necrotic foci have a yellowish-gray color, surrounded by a dark red rim. The size of the lesions can reach sizes from a pinhead to a walnut; They are usually located in groups. 1-2 hours after death, due to rapid cadaveric decomposition, changes in the liver become unrecognizable, in particular, the outlines and signs of necrotic foci completely disappear. The gallbladder is filled with thick bile. The kidneys are pale, mostly flabby and swollen; sometimes necrotic foci are found.
The forestomachs are filled with food masses; the abomasum and small intestine are usually empty. The mucous membrane of the abomasum and small intestine, especially the duodenum, is swollen, hemorrhagically inflamed, with streaky hemorrhages and ulcerations. The swelling of the submucosal layer of the abomasum can be so significant that the thickness of this layer sometimes reaches a centimeter. In the remaining parts of the intestine (mainly the small intestine) signs of acute catarrhal inflammation are found. There are often no changes in the large intestine. A large amount of gas accumulates in the gastrointestinal tract.
Diagnosisplaced taking into account clinical signs, epizootic and pathological data (typically hemorrhagic inflammation of the mucous membrane of the abomasum and duodenum), and the results of bacteriological studies.

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