The association of milk-solid production during the current lactation with liver damage due to presumptive ingestion of spores from Pithomyces chatarum by dairy cattle.

Liver damage was most likely caused by sporidesmin toxicity and was associated with substantial linear reduction in MS., When assessing the impact liver damage has on herd milk production, threshold and prevalence of animals exceeding threshold should be considered by the practitioner in assessing economically significant facial eczema.