11. Also targeted was poultry litter, which could contain spilled poultry feed made with cattle protein. 12. It used to be commonly added to poultry feed . 13. Dioxin entered the food chain through contaminated poultry feed . 14. Most of this freight is composed of grain hopper cars going to local poultry feed mills. 15. Sorghum is used primarily as poultry feed , and secondarily as cattle feed and in brewing applications. 16. Methionine is allowed as a supplement to organic poultry feed under the US certified organic program. 17. The scandal broke when a TV station reported that dioxin-laced fat was used to make poultry feed . 18. Beef by-products are banned for cattle or sheep feed but commonly used in swine and poultry feed . 19. In the United States, however, the powders and extracts are only approved as colorants in poultry feed . 20. The foundation renewed its call to ban the use of synthetic poultry feeds implicated in disease development.