*  University of Gezira Farm, Sudan (Jan.- April 1990).

*  African Company for Poultry Production, Sudan (Oct. – Nov. 1991).

*  Dairy Unit (AAAID), Sudan (March- April 1992).

*  Gezira Scheme Farm, Poultry Unit, Sudan (Feb.- April 1993).

*  Central Slaughterhouse of Omdurman, Sudan (April- May 2000).

*  Thalhausen Research Institute (THV), Germany (Oct.-Dec. 2001).

*  Scientific stay (Dec 2001 – Dec 2003), Central research Laboratory for bio-analysis (HVA), Technical university of Munich, Germany.

*  Scientific stay (5 – 18 Nov. 2003), Federal Center for Meat Research (BAFF), Kulmbach, Germany.