Abstract: Methane from ruminants is a principal contributor to greenhouse gases consequently, sustainable mitigation strategies for enteric emission is in high demand. This study is aimed at modeling bio-methane production process in the bio-digesters using a combination of correspondent feed additives for methane emissions reduction. In this study, the experimental animals were exposed to 5 different feeding trials each, animal waste were collected after the feeding trials. A set up of 5 units of 50litres biogas digesters to cater for the digestion of 4 animal waste substrate and 1 control sample was used as experimental facility for biogas collection. Biogas yield was measured at the end of 14 days.