* MSCI Asia ex-Japan index off 1.3 pct, hovers near 3-wk lows
* Dollar steadies after rebound against majors, down vs yen
* Yen's rally hurts exporters, Nikkei at over one-month lows
By Umesh Desai
HONG KONG, Aug 12 (Reuters) - Asian stocks fell for the third straight day on Thursday on rising doubts about global economic growth, while the dollar steadied after scoring its biggest gain in nearly two years as investors cut exposure to riskier assets.
High yielding currencies such as the Australian and New Zealand dollars and commodity prices also slid following news of a surprisingly large U.S. trade deficit and a downgrade of Britain's growth forecast by the Bank of England.
"Globally, there's a growing sense that the economy is slowing, with a number of economic indicators that appear to show we have entered a period of adjustment," said Kenichi Hirano, operating officer at Tachibana Securities.
The U.S. trade gap widened 18.8 percent in June, suggesting its second-quarter economic growth was weaker than previously thought. The report came days after the U.S. central bank issued a gloomier outlook for the economy and followed a spate of data from China confirming its rapid imports and factory output growth was slowing. [
]The trade data clobbered the three major U.S. indexes, which logged their worst percentage drops in nearly a month as investors fled to safer assets. [
]Weaker-than-expected revenues from bellwether Cisco Systems Inc <CSCO.O> after the U.S. closing bell added to the gloom, weighing on tech shares in Asia. [
]The MSCI index of Asia Pacific ex-Japan stocks <.MIAPJ0000PUS> fell 1.2 percent, led by resources <.MIAPJMT00PUS> and technology shares <.MIAPJMT00PUS>. It is at its lowest since July 23 and has slid back into negative territory for the year to date.
Meanwhile, the U.S. dollar steadied against a basket of other major currencies <.DXY> after rising nearly 2 percent at one point overnight to 82.533, well above its 200-day moving average.
But it continued to hover near a 15-year low against the yen, dipping 0.2 percent from late U.S. trade to 85.16 yen <JPY=>. Overnight, the dollar hit a 15-year low of 84.72 yen on electronic trading platform EBS.
The yen's gains and a weakening outlook for global demand continued to pummel shares of Japanese exporters, with the Nikkei average <
> sliding 2 percent to its lowest levels in over a month.Sony Corp <6758.T> fell 3 percent and chip-tester maker Advantest Corp <6857.T> dripped 2.9 percent.
Many Japanese exporters had set their currency rate assumptions at around 90 yen per dollar for the financial year to next March.
The yen has gained nearly 9 percent against the dollar so far this year as investors looked to lower-risk assets, even though Japan's economy appears far more frail than that of the United States.
RISKY ASSETS RETREAT
The Australian dollar, which is highly influenced by global growth expectations, struck a two-week low of $0.8932 <AUD=D4>, and was down as much as 2.2 percent at one stage for its biggest daily fall in six weeks. The New Zealand dollar <NZD=> was down about 1 percent at $0.7119, a three-week low.
Adding to the Aussie's woes was data which showed July unemployment rose more than expected as more people looked for work, which lessens the risk of wage pressures building and adds to the case against a further rise in itnerest rates any time soon. [
]London Brent crude futures <LCOc1> fell $1 to $76.64 a barrel on worries that global demand was stagnating.
Gold regained strength after falling the previous day as investors sold bullion to cover losses in equities, but a firmer dollar was likely to cap gains.
Spot gold <XAU=> rose $2.20 to $1,199.20 an ounce, still hovering below the closely-watched 50-day moving average. (Additional reporting by Elaine Lies in TOKYO) (Editing by Kim Coghill)