Oct 31 (Reuters) - Cenovus Energy ( CVE ) posted a fall

in third-quarter profit on Thursday, as lower production and

throughput volumes weighed on the Canadian oil and gas producer.

The Calgary, Alberta-based company's net income fell to

C$820 million ($589.17 million), or 42 Canadian cents per share,

in the three months ended Sept. 30, from C$1.86 billion, or 97

Canadian cents per share, a year earlier.

($1 = 1.3918 Canadian dollars)