1Animal Health Centre, P.O. Minakhan, Distt. 24, Paragana (N), W.B.
2Department of Surgery and Radiology, West Bengal University of Animal & Fishery Sciences, Belgachia, Calcutta-700037
Bidhan Chandra Krishi Viswavidhalaya, Mohanpur, Nadia-741252 (W.B.)
*A part of the thesis of the first author.
