alexa Stocking Densities and Chronic Zero Culture Water Exchange Stress Effects on Biological Performances, Hematological and Serum Biochemical Indices of GIFT Tilapia Juveniles (Oreochromis niloticus)
ISSN: 2155-9546

Journal of Aquaculture Research & Development
Open Access

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Research Article

Stocking Densities and Chronic Zero Culture Water Exchange Stress Effects on Biological Performances, Hematological and Serum Biochemical Indices of GIFT Tilapia Juveniles (Oreochromis niloticus)

Mathew D Kpundeh1,2, Pao Xu1,2*, Hong Yang2, Jun Qiang2 and Jie He2

1Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China

2Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, Jiangsu, China

*Corresponding Author:
Pao Xu
Wuxi Fisheries College
Nanjing Agricultural University, Wuxi 214081, China
Tel/Fax: +86 510 85557959
E-mail: [email protected]

Received Date: May 25, 2013; Accepted Date: July 26, 2013; Published Date: July 29, 2013

Citation: Kpundeh MD, Xu P, Yang H, Qiang J, He J (2013) Stocking Densities and Chronic Zero Culture Water Exchange Stress’ Effects on Biological Performances, Hematological and Serum Biochemical Indices of GIFT Tilapia Juveniles (Oreochromis niloticus). J Aquac Res Development 4:189. doi:10.4172/2155-9546.1000189

Copyright: © 2013 Kpundeh MD, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Stocking densities and long term zero culture water exchange rate effects, on biological performances, hematological and serum biological indices of Genetically Improved Farm Tilapia (GIFT) strain cultured in tanks were investigated. The trial was divided into four groups with three replicates each, conducted under natural photoperiods for 30 days; data were analysed using one way ANOVA. Results showed that, high stocking densities and zero water exchange rate negatively affected the biological performances, hematological and serum biochemical indices of GIFT tilapia juveniles. Feeding efficiency, specifc growth and survival rates were significantly decreased. Hematoogical indices: red blood cells, white blood cells, Hemoglobin, Hematocrit and platelet decreased as stocking density increased. Indices of liver function (Aspartate aminotransferase (AST) and Alanine aminotransferase (ALT) activities) were significant increased. Serum glucose levels, an indicator of cortisol released in blood were increased as stocking density increased. Meanwhile, total protein, triglyceride, cholesterol, triiodothyroxine, thyroxine levels in the blood serum showed downward regulation under the same experimental conditions. This paper would provide useful scientific knowledge on biological performances and physiological responses of GIFT strain tilapia to stressors like high stocking density and zero water exchange. Research with different fish sizes and water exchange rates should be further conducted.

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