I denna litteraturstudie undersöks det populära örtpreparatet munkpeppar och dess användningsområden inom hästvärlden. Idag administreras munkpeppar till problemston hos vilka det sägs minska brunstbeteende. Det försäljs även till hästägare vars hästar lider av Cushing's sjukdom där växten påstås lindra symptomen. Munkpeppar har i in vitro försök visats ha dopaminerg, opioidagonistisk och viss östrogen effekt. Det är den dopaminerga effekten i adenohypofysen man vill åt vid behandling av problemston och hästar med Cushing's sjukdom.

This study was a degree in Master of Science in agriculture with specialization in animal science for the Department of animal nutrition and management at SLU. The subject was created by AS-Faktor, a small company for science and development within the company Lantmännen AB. It was a test of the effect of SPC (Special Processed Cereals) on induction of the endogenous protein AF (an antisecretory factor) in plasma and intestinal lumen in broilers. Previous results have shown positive effects on different intestinal diseases in pigs, horses, dogs as well as in humans. Beside the induction we also studied the effects on results in a conventional slaughter chicken production, including the ability of SPC to compete with or be affected by the coccidiostat, Salinomax.When diarrhoea occurs, it's because there is an imbalance between the secretion and the absorption and it can be caused by for example toxins.