Proceeding Biotech 
Production Performance Of Australian Commercial Cross (Acc) Steer That Given Ration Based On Rice Straw Result Of Aerobic Microbe Bioprocess
An-an Yulianti, U Hidayat Tanuwiria Rochadi Tawaf
Unpad
Inggris
Unpad
digestibility, production performance, rice straw fermented, steer
The objectives of this research were to examine the level usage of rice straw fermented in ration and its effect on production performance of ACC steer. Forty steers weighed between 300-325 kg were used in this research. The experimental design was Completely Randomized Design with four treatments each replicated five times. The treatments were R0 (15% rice straw unfermented + 85% concentrate), R1 (15% rice straw fermented + 85% concentrate), R2 (20% rice straw fermented + 80% concentrate) and R3 (25% rice straw fermented + 75% concentrate). All based on dry matter content of feed offered. The results suggested that the ratio of rice straw fermented and concentrate in ration were significantly (P<0.05) affected the protein and energy digestibility of ration. The usage of rice straw fermented till 25% in ration not influence (P>0.05) feed consumption, body weight gain, feed conversion and carcass percentage, nevertheless tend to better than rice straw without fermented