Oct 6 (Reuters) - The Baltic Exchange's dry bulk sea freight index, which monitors rates for vessels moving dry bulk commodities, snapped a six-day losing streak on Monday, buoyed by stronger capesize vessel rates. * The main index, which factors in rates for capesize, panamax and supramax shipping vessels, rose 31 points to 1,932 points. * The capesize index rose 104 points to 2,828 points. * Average daily earnings for capesize vessels, which typically transport 150,000-ton cargoes such as iron ore and coal, increased by $858 to $23,453. * Meanwhile, the panamax index extended losses, dropping eight points to 1,654 points, its lowest since August 19. * Average daily earnings for panamax vessels, which usually carry 60,000-70,000 tons of coal or grain, fell by $75 to $14,886. * Among smaller vessels, the supramax index slipped for its seventh consecutive session, down four points at 1,443 points. (Reporting by Pablo Sinha in Bengaluru; Editing by Vijay Kishore) (The article has been published through a syndicated feed. Except for the headline, the content has been published verbatim. Liability lies with original publisher.)