Feild, Kally L., Randy M. Harp, Barry D. Lambert, and Kyle W. McGregor. 2016. “The Effects of Feeding Ractopamine Hydrochloride to Show-Type Gilts on Growth Characteristics and Reproductive Performance”. Texas Journal of Agriculture and Natural Resources 21 (April):50-59. https://txjanr.agintexas.org/index.php/txjanr/article/view/87.