Estresse de transporte em cascudos amazônicos ornamentais Cochliodon sp. (L145) e Hypostomus sp. (L28) (LORICARIIDAE)

Abstract

In this study was evaluated the hematological response of ornamental Amazon plecos Cochliodon sp. (L145) and Hypostomus sp. (L28) submitted to transportation conditions. The erythrogram, leukogram, thrombogram, glucose and total plasma proteins (PPT) were determined at 0, 6, 24, 48 and 72 hours after 3-hours simulated transportation. For basal hematological profile, the blood was collected immediately to allow comparisons after the transport stress. Cochliodon sp. showed reduction in total erythrocyte after 6 and 24 hours of post-transport, and increase after 6 hours. Hypoglycemia were observed at 6 hours post-transport for Hypostomus sp. Thus, the Hypostomus sp. showed higher resistance compared to Cochliodon sp. when to the transport stress.

Stocking Density of the Pangasius Hypophthalmus Reared in Raceway System

“…This compromise can affect osmoregulatory functions related to water loss due to pressure differentials(Leite et al, 1995; Kaneko et al, 1997).Lipid metabolism was unaffected, as concentrations of cholesterol, triglycerides, and HDL remained consistent without any signi cant increases or in uence from the stocking densities studied.Hematocrit percentage remained stable across the stocking densities, possibly in uenced by the anesthetic eugenol, which can increase hematocrit levels while reducing the number of red blood cells, leading to changes in hematometric parameters(Inoue et al, 2011). The hemoglobin concentration obtained in this study was similar to that reported by Zaninham et al (2017) for S. melanodermatum and relatively high when compared to hematological studies conducted byJunior et al (2013).As for the number of red blood cells, it's notable that the values observed in our study were notably higher when compared to results reported by other researchers(Silva et al, 2012;Junior et al, 2013; Zaminham et al, 2017;Neves et al, 2016). These elevated levels may be indicative of polycythemia, a condition characterized by hematocrit percentages exceeding 45%, resulting in a signi cant increase in the quantity of circulating red blood cells.…”

“…results obtained by other authors(Silva et al, 2012;Junior et al, 2013; Zaminham et al, 2017;Neves, et al, 2016). The high levels observed may have been in uenced by the situation of polycythemia, an observation made when there are hematocrit percentages greater than 45%, which results in a signi cant increase in the quantity of circulating red blood cells.…”