has_component controlled content diet controlled oil content diet 2014-06-12T17:27:48Z A solid diet in which the amount of a specified oil is maintained at a specified level. An oil is any unctuous, combustible substance that is liquid, or easily liquefiable, on warming, and is soluble in ether but not in water. Oils may be animal, vegetable, or mineral in origin. XCO:0000454 experimental_condition_ontology jsmith oil