An experiment was conducted in vitro to determine whether the addition of saponin-containing Yucca schidigera or Quillaja saponaria reduces methane production without impairing ruminal fermentation or fiber digestion. A slightly lower dose of saponin was then fed to lactating dairy cows to evaluate effects on ruminal fermentation, methane production, total-tract nutrient digestibility, and milk...

The effect of two different commercial products Quillaja saponaria saponin extract on mortality the free-living copepodite stage sea-lice Caligus rogercresseyi were assessed in vitro. Parasites exposed for 24 hr to concentrations extracts and then observed until 30 non-Quillaja media. EC50 EC90 evaluated at hr. High mortalities copepodites obtained higher doses (500 ppm) both extracts. Higher u...

Quillaja saponaria is a sclerophyllus evergreen tree species distributed from 30° to 38° S in Central Chile. In this wide distribution it expected that the exhibits phenotypic plasticity morphology of leaves associated climate variation; however, information on topic still scarce. We studied leaf variation and its relationship with temperature, precipitation, aridity 85 stands Q. throughout nat...