About: http://webisa.webdatacommons.org/5779013

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	In such operations, trace elements such as Fe, Cu, Zn, Mn, and B are added to animal feeds to avoid deficiencies and promote animal health (National Research Council, 2001).
http://www.w3.org/ns/prov#wasQuotedFrom	usda.gov