Electronarcosis of Nile tilapia (Oreochromis niloticus): Effects on Dynamic Physiological Balance and Meat Quality.

Introduction: Electronarcosis is the most commonly used stunning method for large animals, but its consequences in tilapia still need to be evaluated. The aim of the study was to evaluate the application of electronarcosis in the pre-slaughter stunning of Nile tilapia (Oreochromis ni-loticus) and verify its effects on dynamic physiological balance and meat quality.

Methods: Nile tilapia specimens, totaling 184, with an average weight of 247.

Effects of Choline Supplementation in Diets on Juvenile Pacu (Piaractus mesopotamicus): Productive Performance, Proximate Composition and Serum Lipid Level.

Introduction: Pacu (Piaractus mesopotamicus) is a Brazilian fish species of high commercial value and has emerged as one of the main species with potential for intensive farming. This study aimed to investigate the impact of choline supplementation on productive performance, visceral fat, hepatosomatic indices, proximate composition, serum biochemical profile, and liver coloration in juvenile pacu (Piaractus mesopotamicus).

Method: The 60-day experiment was conducted in the experimental hatchery of the Study Group of Aquaculture Management - GEMAq of the State University of West Paraná, Brazil.