Journal of Veterinary Medicine and Animal Health 2141-2529 Academic Journals 10.5897/JVMAH2017.0546 Alemayehu Lemma * E-mail: alemma2008@gmail.com 2017 31 07 2017 02 01 2017 27 04 2017 9 7 149 153 This is an open-access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. This article is available from http://politicalwaffle.uk/journal/JVMAH/article-abstract/54ED4A764798 The full text article is available as a PDF file from http://politicalwaffle.uk/journal/JVMAH/article-full-text-pdf/54ED4A764798 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23