Cereal and snack giant Kellogg said first quarter sales figures were buoyed by favourable foreign exchange rates amid margin pressure from higher commodity, energy and benefit costs.

The maker of Rice Krispies and Nutri-Grain posted a 4.2% rise in sales to $2.15bn. Before the impact of currency conversion and disposals sales rose 3.4% compared to last year’s 4.4%.

Kellogg said its marketing spend was increased by 5% in the first quarter with both US cereal and snack sales up 4%, driven by new products and promotions.

Kellogg International posted a 12% rise in net sales, although the increase was only 5% in local currencies.