Venous and arterial acid-base analysis of Magellanic penguins (Spheniscus magellanicus), awake and anesthetized by isoflurane - Dutra, Gustavo Henrique Pereira; Araujo, Giuliano Souza Mendonça de; Silva, André Nicolai Elias da; Nascimento, Cristiane Lassálvia; Carregaro, Adriano Bonfim (Journal of Zoo and Wildlife Medicine, 2019)