Long-term changes in rumen volatile fatty acids (VFA) and archaea to bacteria (AB) ratios in cattle fed either high concentrate or mixed forage:concentrate diets with or without the addition of nitrate (NO3)

摘要

Rumen VFA concentrations and AB ratios established after adaptation to different basal diets and introduction of NO3 as a treatment to mitigate methane emissions were stable for up to 5 months.Many strategies to reduce methane emissions from ruminant livestock are initially successful but their long-term effectiveness can be limited by adaptation of the rumen microbiota. However, long-term monitoring of the rumen is rarely reported. Therefore, long term changes in rumen VFA and AB ratios when NO3 was included in the diet are reported.