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A review of the scientific literature and the historical publications regarding the use of animal by-products as an animal feed ingredient was conducted. Recent reports of animal cases and human cases associated with bovine spongiform encephalopathy and transmissible spongiform encephalopathy agents have resulted in safety questions regarding the use of animal by-products as animal feed ingredients. A review of published literature indicates that the risk associated with the utilization of these products is very minimal risk to the human population. In addition, the environmental and economic consequences of not utilizing these products in proven and safe systems will have greater adverse consequences for the general population.
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Denton et al. (2005) studied this question.
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