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Biogas is a renewable energy source, is a gas produced from biological activity through anaerobic fermentation. This study aims to determine the effect of cow and horse manure as a substrate on the formation of VFA in the fermentation process of biogas production. This research was conducted with two treatments, namely P1 for biogas with a substrate of cow manure and P2 for treatment using horse manure as substrate. Each treatment consisted of three levels, ie. the addition of teak leaf litter at the level of 0%, 5% and 10%. This research was performed with 3 replications and 4 times sampling were taken on day 10th, 20th, 30th and 40th days. The variables observed was the VFA production and total VFA production. The experimental design of this research used a split-plot experimental design. The average of total VFA in the treatments showed significant differences (P<0.05). The results showed that the methanogenic fermentation process in the biogas using cow manure and leaf litter teak (Tectona grandis) had higher total VFA than biogas using horse manure. However, the increase of the level of additional teak leaves on biogas using cow manure and horse manure did not increased the total VFA. (Key word: Biogas, Cow manure, Horse manure, Leaf litter teak)  * Korespondensi (corresponding author): Telp. +62 856 4345 0266 E-mail: windyasmaraludfia@gmail.com

buletin fakultas peternakan universitas gadjah mada/buletin peternakan

PENGARUH JENIS KOTORAN TERNAK SEBAGAI SUBSTRAT DAN PENAMBAHAN SERASAH DAUN JATI (Tectona grandis) TERHADAP PRODUKSI TOTAL VFA PADA PROSES FERMENTASI BIOGAS