ABSTRACT
This research aimed to determine the effect of myristic acid and calliandra leaf meal on concentrate on nutrient digestibility and nitrogen retention. This study used a randomized block design with three treatments and five replications. The treatment consists of T0 (40% corn stover + 60% concentrate), T1 (40% corn stover + 50% concentrate + calliandra leaf flour 10%/Kg DM and myristic acid 30 g/Kg DM), and T2 (40% corn stover + 45% concentrate + calliandra leaf flour 15%/Kg DM and myristic acid 30 g/Kg DM). The measurable parameters were nutrient content, dry matter digestibility, crude protein digestibility, and nitrogen retention. The increasing level of calliandra leaf meal and myristic acid in the concentrate increases the crude protein content and decreases the crude fiber content. The average dry matter digestibility ranged from 77,32–78,06%, average crude protein digestibility ranged from 78,74–80,63%, and the last parameter is nitrogen retention ranged from 21,16–21,25 g/head/day. The result of this study showed that the increasing levels of calliandra leaf meal 15%/Kg DM + Myristic acid 30 g/Kg DM on the concentrate T2 give the best result on nutrient content but not a significant effect of nutrient digestibility and nitrogen retention.
