The hypothesis of the study was that supplementary
EN would be reduced by rumen microbes providing an
alternative hydrogen (and electrons) sink, which would
mitigate enteric methane production in a dose-response
manner. Furthermore, we hypothesized that efficiency
of N utilization would increase in a dose-dependent
manner as a result of replacing supplementary urea with
EN. Therefore, the primary objective was to examine
the effects of an encapsulated form of nitrate on enteric
methane production. In addition, nutrient digestibility
and N and energy utilization were investigated