fenugreek seed (trigonella foenum-graecum) and asparagus root (asparagus officinalis) effects on digestion and kinetics of gas production of alfalfa hay using in vitro technique

the aim of this paper was to study of the effect of fenugreek seed (trigonella foenum-graecum) and asparagus root (asparagus officinalis) on in vitro digestibility and kinetics of gas production of alfalfa hay. fenugreek seed (fs) and asparagus root (ar) were added at different levels (0, 5, 10, 15 and 20% of dm). total phenolic components of alfalfa hay (ah), fenugreek seed (fs) and asparagus root (ar) were 5.9, 10 and 8.3 g/kg dm, total tannins 0.4, 3.8 and 1.5 g/kg dm and saponin 10.4, 27.3 and 40.3 g/kg dm, respectively. in vitro dry matter (dm), organic matter (om) and neutral detergent fiber (ndf) digestibility of alfalfa decreased (p