... on Animal Health and Animal Welfare (1998) agrees, writing that “ [a] nother advantage of gas stunning or gas killing methods, in comparison with electrical stunning, is that they may improve carcass ... period for plants that are using electrical stunning equipment that must be replaced anyway Based on the estimates above, a plant that installs a controlled-atmosphere killing line at a cost of either ... Anglia Autoflow’s sister company, American Autoflow, Inc., which serves North and South America, the “average price for an in- plant Easyload system fitted with gas stunning; washer; automatic drawer...