Common Lesions of the Forestomach

 

 

Abomasitis This abomasum has hemorrhage (bleeding) and ulcers (irregular surface). You may also see air pockets in the abomasum which may be caused by bacterial organisms such as Clostridium.
Displaced abomasum
This is an example of a displaced abomasum. Note that the abomasum is above the rumen when it should be under and slightly in front of the rumen.
Peritonitis Peritonitis
The above photos depict an infection in the abdomen, called peritonitis. The yellow material is a fibrin and may be easily pulled off of the tissue surface depending how long the disease has been going on.
Hardware disease Be sure to look fore any foreign material in any part of the forestomach, such as this wire found in the reticulum.

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Common Lesions

Normal for comparison
Abomasum
Omasum
Reticulum
Rumen

Forestomach necropsy