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Abstract This study aims to determine the application of Bidara leaves (Ziziphus mauritiana) as a feed additive at different percentages of carcasses, abdominal fat, and internal organs in Raja ducks. This study used 80 DOD Raja ducks. This study used an experimental method with a randomized block design (RBD) consisting of 4 treatments and 5 groups. Treatment of Bidara leaf plants A(0%), B(1%), C(2%) and D(3%). The results showed that the use of Bidara leaves as a feed additive, using a percentage of 2% was the best for carcass percentage of 66.79%, abdominal fat percentage of 0.78%, liver percentage of 2.27%, and proventriculus percentage of 0.42%. Efficient in using Bidara leaf plants against Raja ducks. The conclusion of this study showed that the use of Bidara leaves as a feed additive at different percentages had significance on the abdominal fat carcasses and internal organs of the Raja duck, but had nonsignificant on the proventriculus organs.
Nova et al. (Wed,) studied this question.