BRITISH COMPOUND FEED PRODUCTION DETAILED Feed compounds, balancers and concentrates produced in Britain in the five weeks ended January 31 totalled 973,400 tonnes, against 966,200 tonnes produced in the same 1986 period, Ministry of Agriculture figures show. However, cattle/calf feed output, the largest single component, was 7.2 pct down at 435,900 tonnes against 469,900 tonnes. Pig feed was 170,800 tonnes versus 171,600, and poultry feed 287,600 compared with 256,600. Other smaller components included in the total all showed increases.