Global debt issuance collapsed in the first quarter as the credit crunch took its toll on new deals in all sectors from structured finance and riskier high-yield bonds and loans right up to sturdy investment-grade corporate debt, according to new data.

Total debt market volumes were $1,030bn in the first quarter, a 48 per cent drop compared with the same quarter a year ago, while total syndicated loan market volumes were $599.bn, a 47 per cent drop versus the same period last year, according to Dealogic, the data provider.