K. Mogotsi, M.M. Nyangito and D.M. Nyariki
Environmental Research Journal 5 ( 4 ): 156 - 162 , 2011
B.K. Korir, R.N. Kinuthia and D.M. Nyariki
Research Journal of Animal Sciences 4 ( 2 ): 66 - 71 , 2010