| Penulis/Author |
LUIS TAVARES (1); Ir. Cuk Tri Noviandi, S.Pt., M.Anim.St., Ph.D., IPM., ASEAN Eng. (2) ; Prof. Dr. Ir. Endang Baliarti, SU. (3); Ir. Tri Satya Mastuti Widi, S.Pt., M.P., M.Sc.,Ph.D., IPM., ASEAN Eng (4) |
| Abstrak/Abstract |
The aim of this study was to measure the effect of dietary protein and energy
supplementation on rumen characteristics and digestibility of Bali bulls, by in vitro. Leucaena
leucocephala (LL) and Corypha elata Robx (CeR) as protein and energy sources, respectively,
and Native Grasses (NG) collected from Natural Pasture (NP) in Timor-Leste, were used as
dietary treatments. A 3 x 3 factorial design was used in this study, namely, protein and energy
sources (LL, CeR and LL-CeR) and 3 levels of supplementation (10, 15 and 20%). Rumen
characteristics (pH, NH3, microbial protein (MP), and volatile fatty acids (VFA) production
and composition) and dry matter (DM) and organic matter (OM) digestibility were measured.
We found that dietary supplementation had a significant (P<0.05) effect on rumen
characteristics in terms NH3 concentration, total VFA, acetic acid, propionic acid) but did not
affect the pH, butyric acid and microbial protein (P>0.05). The digestibility of DM and OM
were also significantly increased (P<0.05). It is concluded that dietary supplementation
improves rumen characteristics and digestibility of Bali bulls. Leucaena Leococephala and
CeR are recommended as protein and energy supplementation, respectively, on NG diet in NP
in Timor-Leste to optimize productivity of Bali cattle. |
