TY - JOUR TI - Time-response of relationship of ractopamine feeding on growth performance, plasma urea nitrogen concentration, and carcass traits of finishing pigs PY - 2013 AU - Almeida, Vivian Vezzoni de AU - Nuñez, Amoracyr José Costa AU - Schinckel, A. P. AU - Andrade, Carla de AU - Balieiro, Júlio César de Carvalho AU - Sbardella, Maicon AU - Miyada, Valdomiro Shigueru T2 - Journal of Animal Science SN - 0021-8812 DO - 10.2527/jas.2012-5372 UR - https://doi.org/10.2527/jas.2012-5372 PP - Savoy VL - 91 IS - 2 SP - 811-818 ER -