Farm production expenditures for the Mountain States region totaled $8.3 billion in 1987, 6 percent up from the $7.8 billion spent in the previous year, according to Utah Agriculture Department estimates.

The 6 percent increase in expenditures in the region, including Arizona, Colorado, Idaho, Montana, Nevada, New Mexico and Utah, compared with a 3.9 percent increase nationally, DelRoy Gneiting, department statistician, said Thursday.Spending is not broken down state by state because of the cost of such annual calculations, Gneiting said.

"Expenditures were higher for all major categories except livestock purchases, which were down 40 percent, and interest, which dropped 6 percent," he said.

Farm services, including rent, grazing fees and veterinary supplies, were the single largest 1987 expenditure, at $1.9 million, making up 23 percent of the region's production costs, Gneiting said.

The second highest expenditure was $992 million for labor; followed by interest, $868 million; feed, $839 million; livestock and poultry, $834 million, and farm machinery, $790 million.

Nationwide, the department said, farmers spent $110.1 billion on 1987 production, compared with $106 billion the previous year.

All categories of spending across the country were up, except feed, which decreased 0.5 percent to $14.87 billion. Farm services accounted for 22 percent of all expenditures, at $23.99 billion.