1987 - 1991, Demonstrator, Dept. of Poultry Production; Faculty of Agric, Alex. University, Alex.

1991 -1995, Lecturer Assistant , Dept. of Poultry Production; Faculty of Agric, Alex. University, Alex.

1995 - 1999, Lecturer, Dept. of Poultry Production. Faculty of Agric, Alex. University, Alex.

1999 - 2000, Lecturer, Dept. of Animal and Poultry Production, Faculty of Agric (Damanhour), Alex. University.

2000 - 2007, Assistant Professor, Dept. of Animal and Poultry Production, Faculty of Agric (Damanhour), Alex. University.

1/ 2008 - present, Professor, Dept. of Animal and Poultry Production, Faculty of Agric (Damanhour), Alex. University.