Study objective was to compare the beef and forage production and methane (CH₄) emissions of yearling beef cattle between an alfalfa and hybrid brome mixture (A+G) and sainfoin (S).  Sainfoin and A+G were established in 2003 at AAFC-SPARC and the pastures were grazed at the S bloom stage and when the alfalfa was about 10% bloom, respectively.  Experimental design was a 2 X 2 factorial (forages: S and A+G and pasture utilization: 50 and 70%) with three replications.  From 2004 to 2006, average daily gains (ADG), available forage yield (AYD), grazing days (GD) and CH₄ emissions were collected yearly.  No interactions (P>0.05) were observed for GD and AYD, however significant three way interactions were observed for ADG and TLP.  Three way interactions were re-examined by analyzing the data by pasture utilization.  Forage yield and GD were higher (P<0.05) for A+G vs. S, and values were 4,640 and 3,929 ± 194 kg of DM ha^-1 and 128 and 72 ± 7.9 days ha^-1, respectively.  Average daily gains did not differ (P>0.05) between the A+G and S pastures over years at either pasture utilization.  Methane emissions for A+G and S over the three years ranged from 242 to 269 and 249 to 288 L day^-1, respectively.  Sainfoin plant counts declined by over 50% within three production years, however no further reduction in plant count numbers have occurred in 2007.  Sainfoin has good grazing and forage potential and similar methane emissions per animal gain compared to A+G.   However, overall AYD and GD are higher for A+G and S stand persistence is a concern.