1. Abera, M., Habte, T., Aragaw, K., Asmare, K., and Sheferaw, D., 2012a. Major causes of mastitis and associated risk factors in smallholder dairy farms in and around Hawassa, Southern Ethiopia, Tropical Animal Health and Production, 44, 1175–1179.
2. Abera, M., Elias, B., Aragaw, K., Denberga, Y., Amenu, K., and Sheferaw, D., 2012b. Major causes of mastitis and associated risk factors in smallholder dairy cows in Shashemene, southern Ethiopia, African Journal of Agricultural Research, 7, 3513–3518.
3. Berry, D. P., Lee, J. M., Macdonald, K. A., Stafford, K., Matthews, L., and Roche, J. R., 2007. Associations among body condition score, body weight, somatic cell count, and clinical mastitis in seasonally calving dairy cattle, Journal of Dairy Science, 90, 637–648.
4. Breen, J. E., Green, M. J., and Bradley, A. J., 2009. Quarter and cow risk factors associated with the occurrence of clinical mastitis in dairy cows in the United Kingdom, Journal of Dairy Science, 92, 2551–2561.
5. Clyne, L., 2013. A study investigating the prevalence and associated risk factors for heifer mastitis in the MID. In Countdown Symposium, Melbourne, Australia, 16–19.