Animal and poultry disease outbreaks often lead to new or amended policies and regulations. The economic effects induced by these policies can be much greater and much longer lasting than the immediate effect of the disease outbreak alone. Using Bovine Spongiform Encephalopathy (BSE) as an example, this paper demonstrates the pervasiveness of the effects of restrictive feed policies and regulations, particularly as they relate to meat and bone meal and other protein feeds. Costs evaluated include those assumed by consumers via changes in supplies of secondary and final products; environmental costs associated with disposal of hazardous materials; lost value of products to the rendering industry, including a decline in value of meat and bone meal; and supply disruptions and substitutions within the feed market sector increase the total costs of disease mitigation regulations. Benefits from new or amended policies accrue but are not easily measured.