RESUMO
To study the effect of dietary bile and vegetable oil supplementation on the performance of white Pekin ducklings, an experiment was carried out on 120 white Pekin ducklings 2-week old. They were divided into 8 groups, each of 15 birds. Ox bile was added at the rate of 0, 4, 8, and 12 ml/kg diet either alone or with 5% vegetable oil. The experiment lasted for 6 weeks. Body weight development, feed intake, feed conversion, dressing values of total protein, glucose, cholesterol and total lipids were estimated. It was found that the addition of ox bile to the diet at the level of 12 ml/kg improved the body weight development, feed conversion and dressing values without any harmful effect on the health condition of the ducks. In contrast, the addition of fat either alone or with bile had insignificant adverse effect on body weight development, feed conversion and dressing values of the used ducks