1Department of Surgery & Radiology, College of Veterinary Science, Hyderabad
2Department of Surgery & Radiology, College of Veterinary Science, Tirupati
3Former Professor & University Head Department of Surgery & Radiology, College of Veterinary Science, Tirupati
Andhra Pradesh Agricultural University, Tirupati-517 502 (A.P.)
*Part of Ph.D. thesis of the first author approved by A.P. Agricultural University, Hyderabad-30.