Effects of Yucca schidigera and Quillaja saponaria with or without β 1–4 galacto-oligosaccharides on ruminal fermentation, methane production and nitrogen utilization in sheep
Keywords: CO2، دی اکسید کربن; CH4, methane; CO2, carbon dioxide; VFA, volatile fatty acid; GOS, β 1–4 galacto-oligosaccharides; QSE, Quillaja saponaria extract; YSE, Yucca schidigera extractNatural products; Saponin containing plant extract; Methane production; Microbial N synthesis