Alaa A. A. Adam, A. M. Mohamed, and M. E. Mansour

Animal Production Research Center,

P.O. Box 1335-Kuku, Khartoum North, Sudan

Summary

Thirty six Western Sudan Baggara bulls of an average live weight of (192.92±8.90kg) and 2 years age are used in a feeding trial for 70 days. Bulls were divided into three groups (A, B and C) and each group was further divided into four animals sub groups. Different sources of roughage groundnut hay, Sorghum straw and Bagasse were randomly  allocated to group A, B and C respectively. A concentrate molasses based diet (composed of 52% molasses 39% wheat bran, 5% groundnut cakes, 3% urea and 1% common salt) wase affected to all bull group. Feed intake was significantly (P<0.01) increased  in bulls fed sorghum straw than those fed groundnut hay or Baggasse diet. Live weight gain was not significantly different between groups. There were no significant differences in total gain and hence daily weight gain between the three groups, but bulls fed Bagagasse a roughage source had the Sorghum straw higher daily gain followed by the group fed Sorghum straw and groundnut hay, respectively. Feed conversion ratio was not significantly different but the group fed sugarcane Baggasse had an improved feed efficiency than those fed groundnut hay or sorghum straw.

Carcass measurements were not affected by the type of roughage except carcass length which was significantly (P<0.05) higher in group A) that was given than those given the other roughage sources. Non carcass components were not affected by the type of roughages but the group fed baggasses showed higher significant (P<0.01) gut fill than the other groups. Carcass yield and characteristics and Sirloin cut composition was not affected by type of roughage. Meat chemical composition was not affected by type of roughage except ash which was significantly (P<0.01) higher in group C (Baggasse) than in the other group.

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