Nepalese Veterinary Journal Vol. 30 2011 ISSN 2091-0290 Editorial Board Editor-in-Chief Dr. D. R. Khanal Editors Dr. B. R. Joshi Dr. U. M. Singh Dr. K. P. Paudel Dr. K. C. Thakuri Dr. S. P. Shrestha Dr. H. K. Shrestha (USA) Dr. V. C. Jha Advisor Dr. S. N. Mahato Computer Setting Mrs. Pramina Shrestha NEPAL VETERINARY ASSOCIATION Veterinary Complex Tripureshwor, Kathmandu, Nepal Tel/ Fax: 4257496 P. O. Box No.: 11462 E-mail: nveta@wlink.com.np or vetnewsnepal@yahoo.com.np Website: www.nva.org.np Annual Subscription: Nepal: NRs. 300/ SAARC Countries: NRs. 500/ Other Countries: US $ 15/