On Tuesday, Carnival Corp.—the cruise-ship folks—announced plans to eliminate gestation-sow stalls from its pork supply chain. The announcement was released by the Humane Society of the United States (HSUS), and its website reported that Carnival Corp. has set a 10-year deadline for suppliers to complete the transition away from gestation-sow-stall housing.

“Carnival Corporation & plc supports the pork industry’s movement away from gestation crates and will work to ensure that our own pork supply is free of these cages by 2022,” says James Van Langen, vice president of management systems for Carnival Corp. & plc.

This announcement brings the tally to 35 food companies that have made announcements to source pork products from suppliers whose products cannot be traced back to gestation stalls.

“Carnival knows that one thing people don’t leave at home when they go on vacation is their concern for animals,” says Matthew Prescott, HSUS food policy director. “People simply don’t support the lifelong confinement of animals in cages so small they can’t even turn around, and it’s both an ethical decision and good business move for Carnival to recognize that.”

Based in Miami and London, Carnival Corp. is the world’s largest cruise company. Its portfolio includes Carnival Cruise Lines, Holland America Line, Princess Cruises and Seabourn in North America; P&O Cruises and Cunard in the United Kingdom; AIDA Cruises in Germany; Costa Cruises in Southern Europe; Iberocruceros in Spain; and P&O Cruises in Australia. With 100 ships, the company reports that 200,000 guests and 77,000 employees are on board “at any given time.”

Carnival Corp. also owns a tour company that complements its cruise operations-- Holland America Princess Alaska Tours in Alaska and the Canadian Yukon. Combined, the company reports that the vacation companies attract 10 million guests annually. Annual net income was reported at $1.9 billion in 2011.