By Alastair Sharp. TORONTO (Reuters) - Canada's main stock index reversed earlier losses on Friday after several stocks jumped on takeover moves, helping the TSX shrug off uncertainty over U.S.

Toronto-Dominion Bank (TD)'s first share buyback in more than six years adds to a 10-year high in Canadian capital repurchases as companies try to soften the blow of underperforming stock prices.

Proposed changes to U.S. meat labelling laws are unsatisfactory and continue to discriminate against Canadian beef and hog producers, Ottawa says, raising the spectre of retaliatory action from the federal government.

Chile's environmental regulator has halted development of Barrick Gold Corp.'s $8.5-billion (U.S.) Pascua-Lama mine, dealing a fresh blow to the embattled project that is key to the growth plans of the world's largest gold miner.

Kinder Morgan Canada expects to need roughly 150 kilometres of new route for the expansion of its Trans Mountain pipeline, whose current path travels directly through dense urban areas in Edmonton and the B.C.