Nestle became the latest company to be hit by the global slowdown affecting food manufacturers after posting its weakest underlying sales growth in more than a decade.

The Swiss food giant today cut its outlook for the year, saying it now expected its full-year sales to rise by 3.5% after posting an increase of 3.3% for the first nine months. 

It previously said it expected full-year organic sales to rise by around 4.2%.

Like other food manufacturers, the maker of KitKat chocolate bars and Nescafe coffee has been struggling with price deflation for its products in Europe amid fierce competition among supermarkets and weak commodity prices.

Tough conditions have also persisted in key markets like China and Brazil.

Rivals like Unilever have increased prices to compensate for currency weaknesses in some markets like Britain.

Nestle said it continued to prioritise volume increases in what it described as a soft environment, but saw some improvement in pricing.

"In an environment marked by deflation and low raw material prices, we continued to privilege volume growth," chief executive Paul Bulcke said in a statement. "Pricing remained soft but increasing." 

Nestle's 9-month sales rose to 65.51 billion Swiss francs ($66.19 billion) from 64.86 billion Swiss francs a year earlier, Nestle said.

The figure lagged the average analyst estimate of 66 billion francs in a Reuters poll. 

Analysts polled by Reuters had on average expected organic growth - which strips out the impact of acquisitions and currency swings - of 3.7%. 

Unilever said its underlying sales increased 4.2% for the first nine months of 2016, supported by a 2.7% rise in pricing, when it published third-quarter results last week.

French rival Danone this week posted a 2.1% increase in sales during its third quarter.