REFEREENCES

1- Ahmed Elamin Mohamad (Ph. D.)

Department of Medicine, Therapeutic and Toxicology

Faculty of Veterinary Medicine,

University of Khartoum

2- Samya Mohamad Ahmed Elbadawi (Ph. D.)

Department of Medicine, Therapeutic and Toxicology

Faculty of Veterinary Medicine,

University of Khartoum

3- Adil Elkhidir A. Bala (Ph. D.),

Department of Plant Protection,

Faculty of Agriculture and natural resources,

University of Gezira,