Chemical Quality of Rumen Fermentation And In Vitro Digestability Of Complete Feed Based on Sorgum-Clitoria Ternatea Silage with Additional Concentrate Contains Znso4 And Zn-Cu Isoleucinate

Abstract

This study was done to examine the chemical quality of rumen fermentation and in vitro digestibility of complete feed based on silage sorghum-Clitoria ternatea with the level of addition of concentrates. The Complete Randomized Disgn was used in this study with four treatments and four replications. The treatments were T1: Sorghum silage – Clitoria ternatea without concentrate; T2: T1 + 10% concentrate; T3: T1 + 20% concentrate and T4: T1 + 30% concentrate. The concentrate contains 150 mg ZnSO4/kg DM and 2% Zn-Cu isoleucine/kg DM ration. The parameters studied were 1). chemical quality; 2) production NH3 and VFA in vitro; 3) digestibility of DM and OM (DDM and DOM) in vitro. The results showed that the treatment could be increased the crude protein content and the increase occurred linearly, but decrease the crude fiber content such as NDF, ADF, cellulose, and lignin, while the content of hamicellulose had no efeect. The treatments also had no effect on the pH value, decreased VFA production, and increased NH3 production in vitro, but the highest contribution of protein and crude fiber to NH3 and VFA production was at the level addition of T1 treatment. Treatments had an effect on increasing DDM and DOM in vitro and the highest was at the level of addition of 10% concentrate (T1). It could be concluded that the protein and crude fiber content gave a highest contribution to the production of NH3, VFA, DDM and DOM in vitro at 10% concentrate level.