BlackRock Debt Strategies Fund, Inc. seeks to provide current income by investing primarily in a diversified portfolio of U.S. companies' debt instruments, including corporate loans, that are rated in the lower rating categories of the established rating services (Baa or lower by Moody's Investors Service, Inc. or BBB or lower by Standard & Poor's) or unrated debt instruments of comparable quality. As a secondary objective, the Fund will seek capital appreciation.