Abstract
AbstractThe food consumed by animals suffering from grass tetany had as well as a low magnesium content, a high histamine content, and experiments were carried out to explain these high histamine values. Levels of ammonium sulphate and potassium chloride up to 8 and 6 cwt/ac, respectively, did not affect pasture histamine content which varied considerably, during the spring tetany period. Herbage histamine levels rose four to seven days after the start of a dry period, especially if temperatures were low during this period. The accumulation of histamine in the herbage appeared to be connected with the phenomenon of guttation. Suggestions are advanced to show how climate and pasture histamine content may contribute to the occurrence of grass tetany.
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