1970-1974: Range and pasture Management officer

1974- 1977: M.Sc. Scholar Department of Animal Science (University of California – Davis U.S.A)

1978-1980: Teaching Assistant Department of Animal production faculty of Agriculture University of Khartoum.

1980-1983: Ph.D scholar Queen University – Belfast –U.K

1984-1991: Assistant Professor. Faculty of Animal Production- University of Khartoum- Sudan.

1992-2000: Associate Professor.Faculty of Animal Production- University of Khartoum- Sudan.

2001-to-date: Professor Faculty of Animal Production- University of Khartoum- Sudan.

1985-1988: coordinator of M.Sc. Tropical Animal Production, Faculty of Animal Production- University of Khartoum.

1988-1993: Head Department of Animal Husbandry. Institute of Animal Production University of Khartoum.

1995-1996: Secretary of Animal Production Faculty Board

1997- 2001: Head Department of Dairy Production -Faculty of Animal Production- University of Khartoum-Sudan