An elephant's natural diet is high in fibre (36%) and low in protein (7-10%). Juvenile elephants require 3 kg of feed per 100kg of body weight per day. The passage time of food through the gastrointestinal tract ranges from 18 to 24 hours. They have no [[Gall Bladder - Anatomy & Physiology|gall bladder]] and their taenia and sacculations are not as clearly defined as in the horse. | An elephant's natural diet is high in fibre (36%) and low in protein (7-10%). Juvenile elephants require 3 kg of feed per 100kg of body weight per day. The passage time of food through the gastrointestinal tract ranges from 18 to 24 hours. They have no [[Gall Bladder - Anatomy & Physiology|gall bladder]] and their taenia and sacculations are not as clearly defined as in the horse. |