Boise-based MWI Veterinary Supply’s revenues increased 26 percent to $461.9 million in the first quarter ending Dec. 31 compared with $366.1 million in the first quarter of 2011.

The company’s net income also rose to $13.2 million from $10.8 million. Its stock closed at $86.23 Thursday, up $4.56.

Excluding the impact of the acquisition of Micro Beef Technologies’ assets on Oct. 31, MWI’s revenue in the United States went up 14 percent for the quarter. Internet sales to independent veterinary practices and producers in the United States grew about 34 percent for the quarter, while revenues from its veterinary pharmacy programs increased about 43 percent.

The company estimates that for the fiscal year ending Sept. 30, revenues will be from $1.90 billion to $1.95 billion, a 21 percent to 25 percent increase compared to revenues in fiscal year 2011.