Idexx Laboratories reported increased earnings for the second quarter, despite a negative impact on revenues from a strong exchange rate for the dollar.

The Westbrook-based company said earnings per share were 60 cents, an increase of 9 percent over the earnings for the same period a year ago. A survey of analysts conducted by Zacks Investment Services had forecast earnings per share of 58 cents.

The company said earnings per share would have risen 18 percent if exchange rates had not been unfavorable.

Idexx said revenues grew 6 percent in the second quarter, compared to the same period a year ago, but the strengthening value of the dollar reduced that increase by 7 percent.

The company Idexx said it expects expects earnings per share for the full year to be $2.07 to $2.12.

Idexx produces diagnostic and information technology products and services for veterinary practices and for livestock and poultry operations and tests for the quality and safety of water and milk. It has more than 6,000 employees worldwide and operates in more than 175 countries.