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All Journal Journal of Tropical Animal Science and Technology
Angela Matilda Bupu Nua
Fakultas Peternakan, Kelautan dan Perikanan, Universitas Nusa Cendana
Agriculture, Biological Sciences & Forestry

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The effect of Gracilaria sp. use in Complete Feed on In Vitro Digestibility of Dry Matter, Organic Matter, Digestible Energy, and Metabolizable Energy Imanuel Benu; Angela Matilda Bupu Nua; Tara Tiba Nikolaus; Gusti Ayu Yudiwati Lestari; I Gusti Ngurah Jelantik
Journal of Tropical Animal Science and Technology Vol. 8 No. 3 (2026): Journal of Tropical Animal Science and Technology
Publisher : Animal Science Study Program, Faculty of Agriculture, Science and Health, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jtast.v8i3.11343

Abstract

This study was conducted to evaluate the effects of different inclusion levels of Gracilaria sp. in complete feed on in vitro dry matter digestibility, organic matter digestibility, digestible energy, and metabolizable energy. The experiment employed a Completely Randomized Design (CRD) consisting of four dietary treatments with three replicates. The dietary treatments were as follows: G0 = 70% native grass + 30% concentrate; G5 = 65% native grass + 5% Gracilaria sp. + 30% concentrate; G10 = 60% native grass + 10% Gracilaria sp. + 30% concentrate; and G15 = 55% native grass + 15% Gracilaria sp. + 30% concentrate. The results showed that increasing the inclusion level of Gracilaria sp. in the complete feed significantly (P<0.05) improved in vitro dry matter digestibility (56.67–64.06%) and organic matter digestibility (53.99–61.02%). However, it had no significant effect (P>0.05) on digestible energy (10.15–10.84 MJ/kg) or metabolizable energy (8.32–8.89 MJ/kg). It can be concluded that the use of Gracilaria sp. at levels of 5% to 15% in complete feed is effective in improving in vitro digestibility without reducing its energy value. The 5% inclusion level serves as the initial threshold to improve organic matter digestibility, while the 15% level yields the most optimal dry matter digestibility.
Co-Authors Gusti Ayu Yudiwati Lestari I Gusti Ngurah Jelantik Imanuel Benu Tara Tiba Nikolaus