The efficacy of a novel microbial 6-phytase expressed in Aspergillus oryzae on the performance and phosphorus utilization of cold- and warm-water fish : rainbow trout, Oncorhynchus mykiss, and Nile tilapia, Oreochromis niloticus - Verlhac-Trichet, Viviane; Vielma, Jouni; Dias, Jorge; Rema, Paulo; Santigosa, Ester; Wahli, Thomas; Vogel, Kurt (My University, 2014)