LONDON (Reuters) - Associated British Foods (>> Associated British Foods plc) edged up its full-year earnings forecast on Monday, helped by recent currency moves and a pick-up in trading at its Primark clothing chain.

The firm, which also has major sugar, grocery, agriculture and ingredients businesses, said it expected a marginal decline in adjusted earnings per share in its 2015-16 year, having previously forecast a modest decline.

AB Foods made adjusted earnings per share of 102 pence in 2014-15.

The firm said the weakening of sterling in recent weeks, particularly against the euro, will ease the effect of currency translation on the 2015-16 results assuming current rates prevail, reducing its previous estimate of 25 million pounds to 10 million pounds.

It also said underlying sales at Primark had improved since its January update and were expected to be level with last year in its first half to Feb. 27. Total Primark sales in the first half were forecast to be up 7.5 percent on a constant currency basis.

Primark entered the U.S. market in September last year with two openings in Boston and Pennsylvania and plans six more openings in 2016. It said early trading in the U.S. had been encouraging.

The group added that AB Sugar performed steadily in the first half. It said world sugar prices remained low but a tightening of EU and Chinese stock levels resulted in a strengthening of domestic prices in those markets.

Earlier this month AB Foods launched a bid to acquire the 49 percent of equity in South Africa's Illovo Sugar (>> Illovo Sugar Limited) it does not already own.

(Reporting by James Davey; editing by Sarah Young and Kate Holton)

Stocks treated in this article : Illovo Sugar Limited, Associated British Foods plc