Yadnya, T.G.B., Trisnadewi, A.A.A.S., Sukada, I.K. and Oka, I.G.L. 2016. The effect of offered diet containing rice hull and mono sodium glutamate (msg) and effective microorganism -4 (em-4) solution on the performance of campbell duck. International research journal of engineering, IT & scientific research. 2, 11 (Nov. 2016), 75–82.