[Physiological response of experimental challenge of Ichthyophthirius multifiliis (Fouquet, 1876) in jundiá (Rhamdia quelen Quoy and Gaimard, 1824) fingerlings rather fed with different lipid sources].

A limiting factor in the early stage of the jundiá (Rhamdia quelen Quoy; Gaimard, 1824) culture is the presence of diseases such as ichthyophthiriasis or "Ich". Dietary polyunsaturated fatty acids (PUFAs) have a potent immunomodulatory activity; and this activity depend of the fish species, quantity/quality of the dietary PUFAS. The aim of this study was evaluate the physiologic response of jundiá, rather fed diets with different sources of fatty acids when challenge to Ich disease.