HBS, also known as jejunal hemorrhage syndrome or bloody gut, is a disease that affects the small intestine in cattle, causing large blood clots to form. Death is the usual result.

Researchers at Oregon state university have developed a diagnostic test that may soon help producers test for hemorrhagic bowel syndrome. The polymerase chain reaction test is used to test blood and tissue samples for the mold Aspergillus fumigatus -— one of the two main suspected causes of HBS.

Oregon State University researcher Neil Forsberg and graduate student Steve Puntenney developed the test during feeding trials of a feed additive designed to eliminate or neutralize the mold. Initial results on the additive look promising.