The Humane Society of the United States will address Domino’s Pizza executives at the pizza company's April 28 annual shareholder meeting in Ann Arbor, Mich.

Domino’s is the world's second-largest pizza company, reports Pizza Marketplace. The delivery-carryout chain is based in Ann Arbor, Mich., and has more than 8,726 units in 60 countries. Domino’s did approximately $6.9 billion in system-wide sales in 2008.

“We’re asking the company to implement some very basic but important animal welfare improvements, similar to what many top food companies have already done,” says Kristine Middleton, corporate outreach manager, who will be addressing the executives. HSUS is a shareholder of the pizza company.

Middleton’s speech will mainly target what she says is the company’s practice of using pork from suppliers that use gestation-sow crates. Middleton cites seven states, including Michigan, Domino's home state, have passed laws prohibiting the use of gestation crates.

Other quick-serve restaurant chains such Burger King, CKE Restaurants, Wendy’s, Chipotle, Panera Bread and Sonic have agreed to phase in purchases of pork from suppliers who do not use gestation crate. Middleton could not confirm any pizza chains that have committed to that same action.

“We’re in various states of communication with various chains, including pizza chains, but none that are ready to make announcements,” she says.

Source: Pizza Marketplace