Influence of protein supplementation on the resistance and resilience on young hair sheep naturally infected with gastrointestinal nematodes during rainy and dry seasons - Louvandini, Helder; Veloso, C. F. M; Paludo, Giane Regina; Dell'Porto, Arlete; Gennari, Solange Maria; McManus, Concepta Margaret (Veterinary Parasitology, 2006)