Chromium and selenium-enriched yeast for castrated finishing pigs: effects on performance and carcass characteristics oleh João Garcia Caramori Júnior, Charles Kiefer, Eduardo Viana Ferreira, Bruno Serpa Vieira, Henrique Carvalho Oliveira, Camila Mendonça Silva, Rodrigo Caetano Abreu, Uanderson Veríssimo de Luna