SUBSTITUSI KONSENTRAT DENGAN SILASE CAMPURAN HIJAUAN KETELA POHON (Manihot esculenta, Crantz) DAN GLIRISIDIA (Gliricidia sepium, Jacq.) DALAM PAKAN TERHADAP PENAMPILAN DOMBA EKOR GEMUK
The aim of this research was to study the effects of concentrates subtitution with cassava leaf (Manihot esculenta, Crantz) and gliricidia (Gliricidia sepium,Jacq) mixtures silage on feed consumption, digestibility, N retention and average daily gain of fat tailed sheep. Twenty Â male fat tailed sheep of approximately 18 months, with body weights of 23,85Â±4.75 kg were alloted randomly into a Randomized Block Designs with five treatments and four blocks. They were kept in the wooden metabolizable cages. TheÂ diets were consisted ofÂ corn leaf (CL), concentrates (C) containing 22,85% crude protein (CP) and cassava leaf-gliricidia mixtures silage (S). The ratio of S : C was 60Â : 40% on dry matter (DM) basis. Five dietary treatments were : R0 = CL 60% and C 40% (C 100%Â and S 0%); R25 = CL 60% and C 40% (C75% and S 25%); R50 = CL 60% and C 40% (C 50% and S 50%); R75 =Cl 60% and C 40% (C 25% and S 75%); R100 = CL 60% and C 40% (C 0% and S 100%).Â The diet was offered at 3% of body weight on the DM basis. The variables measured were DM intake, organic matter (OM)Â intake (OM intake), CP intake, DM digestibility, OM digestibility, CP digestibility, DM digestibility intake, OM digestibility intake, CP digestibility intake, N retention and average daily gain (ADG). The results showed that the treatments had no significant differences (P>0.05) on CP intake, but had significant differences (P<0.05) on DM intake, OM intake, N retentionÂ and had highly significant differences (P<0.01) on DM digestibility, OM digestibility, CP digestibility, DM digestibility intake, OM digestibility intake, CP digestibility intake, and ADG. The effects of concentrates substition with silage mixtures till 100% could decrease feed intake, digestibility, N retention and ADG. However, concentrate subtitution with 25% of cassava leafâ€“gliricidia silage mixtures in the diet showed the same ADG (165.24 g/head/day) with 100% concentrates (168.9 g/head/day). (JIIPB 2010 Vol 20 No 1: 22-30).
ÂKeywords : cassava leaf-gliricidia mixtures silage, concentrates, substitution, fat tailed sheep performance.
LicenseAuthors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).