机译:INCIDENCE AND RISK FACTORS OF MILK FEVER AMONG CROSS-BRED DAIRY COWS IN KHARTOUM STATE, SUDAN
Departments of Clinical Medicine and Khartoum, Khartoum North, RO. Box 32, Sudan;
Department of Reproduction and Obstetrics, Faculty ofVeterinary Medicine, University of Khartoum, Khartoum North, RO. Box 32, Sudan;