1. Abaineh, D., Sintayehu, A., 2001. Treatment trial of sub-clinical mastitis with the herb Persicaria senegalense. Tropical Animal Health and Production, 33, 511–519.
2. Abdella, M. 1996. Bacterial causes of bovine mastitis in Wondogenet, Ethiopia. Zentralbl Veterinarmed B, 43: 379–384.
3. Biffa, D., Debela, M. and Beyene, F. 2005. Prevalence and risk factors of mastitis in lactating dairy cows in Southern Ethiopia. Intern J Appl Res Vet Med, 3: 189–198.
4. Brumfitt, W. and Hamilton-Miller, J. 1989. Methicillin-resistant Staphylococcus aureus. N Engl J Med, 320: 1188–1196.
5. Biru, G., 1989. Major bacteria causing bovine mastitis and their sensitivity to common antibiotics. Ethiopian Journal of Agricultural Sciences, 11, 47–54.