USDA RAISES SOVIET GRAIN IMPORT ESTIMATE The U.S. Agriculture Department increased its estimate of Soviet 1986/87 grain imports to 26 mln tonnes from last month's projection of 23 mln tonnes. In its monthly USSR Grain Situation and Outlook, USDA said the increase reflected the return of the Soviet Union to the U.S. corn market and continued purchases of both wheat and coarse grain from other major suppliers. USSR wheat imports were projected at 15 mln tonnes, up one mln from last month's estimate and 700,000 tonnes below the preliminary 1985/86 figure. Soviet grain for feed use was estimated at a record 129 mln tonnes. Record or near-record livestock inventories, along with a dry fall which likely reduced late season pasturage, and a cold winter have increased feed demand, USDA said. USSR meat and egg production in January rose only slightly from the previous January's level, while milk production increased by nearly six pct. Unusually cold weather in January and smaller increases in roughage supplies during 1986 than in 1985 kept livestock production from expanding as much as it did a year earlier, USDA said.