Addisu B, Mengistie T, Adebabay K, Getinet M, Asaminew T, Tezera M and Gebeyehu G 2010: Milk yield and calf growth performance of cattle under partial suckling system at Andassa Livestock Research Centre, North West Ethiopia. Livestock Research for Rural Development. Volume 22, Article #136. Retrieved , from http://www.lrrd.org/lrrd22/8/bite22136.htm