Plasma Lipid and Organ Changes Associated with the Feeding of Animal Fat to Laying Chickens

Abstract
Depending on the age of birds and the duration of feeding trial, 5 to 10% of added animal fat to laying rations resulted in the development of an apparent derangement in lipid metabolism characterized by one or more of the following symptoms: elevated plasma cholesterol and total plasma lipid; excess deposits of body fat; friable and fatty livers; fatty deposits in and around the kidney; and greater severity of aortic atherosclerosis.