Effects of saponin on enteric methane emission and nutrient digestibility of ruminants: An in vivo meta-analysis

Abstract Although saponin originated from plants has been used to control methanogenesis performed by archaea methanogens in the rumen, its effect inconsistent. The objective of this study was evaluate dietary on enteric methane emission and nutrient digestibility ruminants across various studies employing a meta-analysis method. A database developed integrating data 17 that 11 articles. Different ruminant species, i.e., both small large were included database. Data related vitro excluded. Papers should be based vivo only simultaneously reported emission. Treatments divided into (no saponin), low (saponin level less than 0.5% DM) high above DM). treatments considered as fixed effects whereas random statistical mixed model methodology. Results showed decreased compared (P<0.05), true for levels saponin. Interestingly, increased dry matter digestibility, organic neutral detergent fiber acid comparison (P<0.05). However, at administration reduced these In conclusion, is effective mitigate enhances provided use not exceed DM.