Z-SEVEN FUND SEES HIGHER 1987 NET <Z-Seven Fund Inc> said it expects to earn six dlrs a share in 1987, up from 4.20 dlrs a share in 1986. The company said the 1986 net earnings were up 30 pct from 3.22 dlrs in 1985. Net asset value in 1986 rose 35 pct to 16.09 dlrs a share from 11.89 a year earlier, adjusted for a three-for-two stock split.