Which ingredient is explicitly cited as being imported from China and possibly linked to PEDV introduction into the US?

• A. Lysine
• B. Vitamin D
• C. Choline chloride
• D. Soybean meal

Answer: (D)

PEDV can spread through contaminated feed, so ingredients used in swine diets are scrutinized as potential vehicles. Soybean meal is a common protein source that is widely imported, including shipments from China. In discussions about how PEDV may have been introduced into the U.S., soybean meal imported from China has been explicitly cited as a possible source. The virus can persist in dry, protein-rich feeds under certain conditions, so importing soybean meal from a region with PEDV concerns raises the risk of introducing the virus to U.S. herds. The other ingredients listed are typical feed additives or components, but they are not the ones specifically identified as being imported from China and linked to PEDV introduction in the cited discussions.