Article: Bony lump jaw in cattle.(The cow barn)

Bacteria are often present in the mouth of cattle, so anything that punctures the mouth tissues may open the way for infection, which can lead to "lump jaw." There are two kinds of lump, requiring different treatment. Most common are soft tissue infections which are easy to treat by lancing and draining. Another type of lump is caused by infection in the bone, and it is difficult to treat. It usually results in having to cull or butcher the animal. Bony lump jaw tends to occur most often in young cattle two or three years of age.

Both types of lump begin in the same manner. A break in the tissue allows bacteria to enter. A sharp seed or sharp object in the feed ...

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