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An experiment was conducted as a Latin square design with four rumen fistulated local yellow cattle with a mean live weight of 230 kg. The treatments were: (CLM0) urea-treated rice straw ad libitum plus 1 kg cassava root meal (basal diet), (CLM500) basal diet plus 500 g cassava leaf meal, (CLM1000) basal diet plus 1,000 g cassava leaf meal, and (CLM1500) basal diet plus 1,500 g cassava leaf meal. The results showed that there were differences in dry matter intake of urea-treated rice straw between treatments (p<0.05). The highest total dry matter intake was observed for treatment CLM1500, with 2.62 kg DM/100 kg LWt/day, followed by treatments CLM1000, CLM500 and CLM0, with 2.42, 2.00 and 1.86 kg DM/100 kg LWt/day, respectively. The ruminal ammonia concentration on treatment CLM1500 was greater than on treatments CLM1000, CLM500 and CLM0. There were non-significant differences in the ruminal pH among the treatments. The in sacco degradability of cassava leaf meal and cassava root meal was high, and on average 75 and 85% respectively of the DM had disappeared after 24 h of incubation. Degradation rate of urea treated rice straw was 64% after 72 h of incubation. |
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