 | Abstract 661MOLASSES-UREA BLOCK (MUB) AND Acacia mangium AS SUPPLEMENTS FOR CROSSBRED HEIFERS FED POOR QUALITY FORAGESBui Xuan An, Ngo Van Man, Luu Trong Hieu University of Agriculture and Forestry, HoChiMinh City, VietNam Livestock Research for Rural Development 1992 4(2): 7-12. In the first experiment, twenty four crossbred heifers, given forages of low nutritive value, were divided equally into 4 groups with different supplements: C1, 1 kg/d concentrate; MUB, 1 kg/d concentrate + 0.5 kg/d MUB; AM, 1 kg/d concentrate + fresh Acacia mangium leaves (2 kg/100 kg LW); AMMUB, 0.5 kg/d MUB + fresh Acacia mangium leaves (2 kg/100 kg LW). The experiment period was 90 days. DM intakes were 5.08, 6.21, 5.61, and 5.49 kg/d, and live weight gains were: 107, 340, 185, 236 g/d, for treatments C, MUB, AM and AMUB, respectively. In experiment 2 a rumen-fistulated cow was fed 3 diets in turn: C, rice straw; MUB, rice straw + 0.5 kg/d MUB; AM rice, straw + fresh Acacia mangium leaves (2kg/100 kg LW). Rate of disappearance of rice straw increased 16-17% with MUB supplementation. There was no apparent effect of the Acacia mangium leaves. This abstract relates to the following species: |