PENGARUH SUBSTITUSI DEDAK HALUS DENGAN TEPUNG KULIT BUAH KOPI DALAM RANSUM TERHADAP KECERNAAN BAHAN KERING DAN SERAT KASAR PADA TERNAK BABI FASE GROWER

Abstract

EFFECT OF SUBSTITUTION OF RICE BRAN WITH COFFEE HUSK MEAL IN THE DIET ON DRY MATTER AND CRUDE FIBER DIGESTIBILITY OF GROWING PIGS. An experiment was conducted todetermine the effects of substitution of rice bran with  coffee husk meal in the diets on dty matter and crude fiber digestibility of growing pigs. The present study was conducted for 60 days, using 20 castrated male Duroc X Spotted Poland China, aged 2,5-3,0months with an averaged body weight of 30,1-40,0 kg. Treatment diets were formulated as follow: R0 = 25% rice bran + 0% coffee husk meal (without coffee husk meal); R1 = 18.75% rice bran + 6.25% coffee husk meal (substituion of 25%); R2 = 12.5% rice bran + 12.5% coffee husk meal (substituion of 50%); R3 = 6.25% rice bran + 18.75% coffee husk meal (substitution of 75%); and R4 = 0% rice bran + 100% coffee husk meal (substituion of 100%). Completely Randomized Block Design (CRBD) with 5 treatments and 4 replications (blocks) was used as a statistical analysis (Anova).  An Orthogonal Contrast test was further employed to analyze treatment differences. Different between treatment(s) was declared at P < 0.05. Parameters measured were dry matter and crude fiber digestibility. Research results showed that the crude fiber digestibility increased significantly (P < 0.05) as the level of substitution of rice bran with coffee husk meal increased in the diets. Whereas, no significant differences (P > 0.05) were found among treatments on dry matter digestibility. It can be concluded that replacement of rice bran with coffee husk meal up to 100% or 25% in growing pigs diets positively increased crude fiber digestibility and did not affect dry matter digestibility.

Key words: Pigs, rice bran, coffe husk, dry matter and crude fiber digestibility