T.M. Mohamed*, F.A. Ahmed and M.Z. Ali

Department of Animal Science, Faculty of Agricultural Sciences,
University of Gezira, P.O. Box 20, Wad Medani, Sudan.

SUMMARY

Thirty milking cows (Kenana or Butana X Frisian) in their second to fourth lactations were used under two management conditions in two separate farms to study the effect of three levels (High, Medium and Low) of dietary crude protein supplement on milk yield and milk composition.

The crude protein levels were 204,175 and 140g/kg DM and 176, 153 and 129 g/kg DM. in Farm 1 and 2 respectively. Undpr both management conditions increasing the dietary protein level significantly increased the milk yield and milk protein but not the milk fat. A dietary crude protein level of 130-175 g/kg DM was suggested for high milk yield under the Gezira management conditions.

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