OLDWICK, N.J.--(BUSINESS WIRE)-- #insurance--AM Best has downgraded the Financial Strength Rating to A- (Excellent) from A (Excellent) and the Long-Term Issuer Credit Rating to “a-” (Excellent) from “a” (Excellent) of Kentucky Farm Bureau Mutual Insurance Company (KFB Mutual) (Louisville, KY), which is a member of Kentucky Farm Bureau Group. The outlook of these Credit Ratings (ratings) has been revised to stable from negative. The ratings reflect KFB Mutual’s balance sheet strength, which AM Best assesses