Histamine Levels in Forages and Dry Matter Intake of Heifers

Abstract
Histamine concentrations were determined in hay and silages fed to dairy heifers in order to investigate the possible relationship between histamine and silage dry matter intake. Although there was a statistically significant relationship between histamine level and the dry matter of the silages, data indicated that histamine was not a factor in inhibiting silage intake. Urinary and fecal histamine levels did not reflect the amount of histamine ingested.