Effects of External Parasites on the Productivity of Poultry in the Traditional Rearing System in the Sub-humid Zone of Burkina Faso

O. C. Hien, B. Diarra, R. Dabire, J. Wangrawa and L. Sawadogo

International Journal of Poultry Science 10 ( 3 ): 189 - 196 , 2011