UPDATE 2-China's Dalian live hog futures slump 10% on debut
* Increasing pork output, weak demand to pressure prices - analysts * High margin requirements to reduce contract’s initial hedging use - consultant (Updates with closing prices, comment, charts) SHANGHAI/BEIJING, Jan 8 (Reuters) - China’s live hog futures tumbled in their debut on the Dalian Commodity Exchange, with analysts attributing the sell-off to the contract’s high listing price and expectations of increasing supplies. The front-month September contract closed 12.6% lower at 28,290 yuan ($4,376.95) per tonne on Friday versus its 30,680 yuan listing price. Trading volume stood at...