The purpose of this study was to determine the balance of straw and calliandra fermented with physical quality and nutritional silage. This study was used as a Completely Randomized Design (CRD) with 6 treatments and 3 replications. R0 (control, rice straw not mixed with calliandra). R1 (mixing rice straw and calliandra with straw ratio of 90% and calliandra 10%), R2 (mixing rice straw and calliandra with a ratio of 80% straw and calliandra 20%), R3 (mixing rice straw and calliandra with a ratio of 70% straw and calliandra 30%), R4 (mixing straw and calliandra with straw ratio of 60% and calliandra 40%), R5 (mixing straw and calliandra with comparison straw 50% and calliandra 50%). Judging from the physical appearance for the (color, aroma, and texture) the parameters did not differ significantly between all treatments (P> 0.05). The best treatment is the treatment of R5 (rice straw ration and 50%: 50% calliandra). Judging from nutrient silage for water parameters and no dry matter and crude protein showed that the real effect was different from (P> 0.05) ash content, organic matter, and crude protein showed very significant effect (P <0.01). The highest yield of organic matter and crude protein is R5 (ratio of rice straw and kaliandra 50%: 50%) with the highest percentage of organic matter 81.63% and the highest crude protein 15.35%.
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