Biomassa Nutrien Hijauan Sistem Ransum In Situ (SRI) dan Evaluasi Taraf Penambahan Indigofera zollingeriana terhadap Fermentabilitas dan Kecernaan In Vitro dalam SRI: Nutrient Biomass of Forage in an In Situ Ration System (IRS) and the Evaluation of Indigofera zollingeriana Inclusion Levels on In Vitro Fermentability and Digestibility in IRS

Muhammad Syarif. S; Luki Abdullah; Didid Diapari; Irsal Eka Saputra; Jidan Ramadani

doi:10.29244/jintp.24.2.70-77

Authors

M Syarif S IPB Graduate Student
L Abdullah IPB University
D Diapari IPB University
I E Saputra IPB University
J Ramadani IPB University

DOI:

https://doi.org/10.29244/jintp.24.2.70-77

Keywords:

Indigofera zollingeriana, in vitro, IRS

Abstract

This study aimed to evaluate different inclusion levels of Indigofera zollingeriana on the in vitro fermentability and digestibility of IRS to determine the optimal IRS formulation for breeding sheep. The study was designed as a Randomized Block Design (RBD) with five treatments and five replications as blocks, based on the time of rumen fluid collection. Five dietary treatments (M0-M4) were formulated with I. zollingeriana inclusion levels of 0%, 10%, 20%, 30%, and 40% of the total dietary dry matter. Data were analyzed using Analysis of Variance (ANOVA), followed by Duncan's Multiple Range Test (DMRT) when significant differences occurred (p<0.05). The results showed that increasing I. zollingeriana inclusion levels did not affect ruminal pH, total VFA, partial VFA concentrations, or methane production. However, it significantly decreased (p<0.05) the molar proportion of C2, increased the molar proportion of C3, and decreased the C2/C3 ratio by 10% I. zollingeriana inclusion compared with the other treatments. Meanwhile, increasing the inclusion level of I. zollingeriana significantly (p<0.01) increased IVDMD and IVOMD. It can be concluded that Indigofera zollingeriana improved nutrient quality, rumen fermentability, and in vitro digestibility, with the best results obtained at 40% inclusion.

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