Liu Jintao, vice general manager of the group, was optimistic about the outlook for the purchase initiated by Shuanghui International, the group's parent company.

"We inked an agreement with the world's largest pork producer, Smithfield, and we believe our partner will handle the case properly," he said on Thursday (4 July).

More than a month after the two companies jointly announced the purchase, Missouri Governor Jay Nixon on Tuesday vetoed two bills that would allow non-US enterprises to achieve farmland ownership, which is currently banned within the state.

Although Mr Jintao did not directly comment on the impact of the veto, he used Sina Weibo, a Chinese Twitter-like service, to stress, "Smithfield Foods and Shuanghui International have discussed this issue and consider it no obstacle in finalizing the acquisition."

On 29 May, Shuanghui International agreed to buy Smithfield for $7.1 billion, a move expected to improve the Chinese meat giant's management and competitiveness.

"The acquisition, which comes under the backdrop of the United States facing overcapacity in meat production while China is haunted by the opposite, will be a win-win deal," said Feng Yonghui, chief analyst with Beijing Yiheng Modern Farming Information and Technological Institute.