Effect of sublethal concentrations of copper on the growth performance of Oreochromis niloticus

Amanat Ali, S. M. Al-Ogaily, N. A. Al-Asgah, J. Gropp

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

The study evaluated the effect of different sublethal concentrations of copper in water (0, 0.15, 0.3 and 0.5 p.p.m.) on the behavioural response, growth performance, and whole body and liver composition of Oreochromis niloticus. Hyperactivity and reduced exploratory behaviour were observed when fishes were subjected to different levels of copper in water as compared with the control. Fish refused to accept the feed immediately after exposure and only began taking it up after about 4-5 h as compared with the control. Weight gain, specific growth rate and condition factor (k) decreased significantly (P <0.05) as compared with the control; this decrease was linearly correlated with the increase of copper concentration in water. Exposure of the fish to different copper concentrations in water significantly (P <0.05) reduced their feed consumption as compared with the control. Values for the feed conversion ratio increased (P <0.05) whereas the protein efficiency ratio and net protein retention values decreased (P <0.05) with the copper level increase in water. The hepatosomatic index increased with the copper concentration increase in water. Body moisture and ash contents were the highest (P <0.05) whereas the fat and gross energy contents were the lowest (P <0.05) in fish reared in water containing 0.5 p.p.m. of copper as compared with others. No significant (P <0.05) differences were observed in the whole body crude protein content of fish exposed to different concentrations of copper as compared with the control. Liver moisture and ash contents increased (P <0.05) whereas the crude protein, fat, nitrogen free extract and gross energy contents decreased (P <0.05) when the fish were exposed to different concentrations of copper as compared with the control. The liver glycogen level decreased whereas the copper level in the whole body and liver increased significantly (P <0.05) with the copper concentration increase in water.

Original languageEnglish
Pages (from-to)183-188
Number of pages6
JournalJournal of Applied Ichthyology
Volume19
Issue number4
DOIs
Publication statusPublished - Aug 2003

Fingerprint

sublethal effects
Oreochromis niloticus
growth performance
copper
fish
water
liver
protein
ash content
energy content
fat
effect
ash
crude protein
moisture
water content
hepatosomatic index
condition factor
protein efficiency ratio
behavioral response

ASJC Scopus subject areas

  • Aquatic Science

Cite this

Effect of sublethal concentrations of copper on the growth performance of Oreochromis niloticus. / Ali, Amanat; Al-Ogaily, S. M.; Al-Asgah, N. A.; Gropp, J.

In: Journal of Applied Ichthyology, Vol. 19, No. 4, 08.2003, p. 183-188.

Research output: Contribution to journalArticle

Ali, Amanat ; Al-Ogaily, S. M. ; Al-Asgah, N. A. ; Gropp, J. / Effect of sublethal concentrations of copper on the growth performance of Oreochromis niloticus. In: Journal of Applied Ichthyology. 2003 ; Vol. 19, No. 4. pp. 183-188.
@article{71e6b023a85742b0a957f5063a6fd082,
title = "Effect of sublethal concentrations of copper on the growth performance of Oreochromis niloticus",
abstract = "The study evaluated the effect of different sublethal concentrations of copper in water (0, 0.15, 0.3 and 0.5 p.p.m.) on the behavioural response, growth performance, and whole body and liver composition of Oreochromis niloticus. Hyperactivity and reduced exploratory behaviour were observed when fishes were subjected to different levels of copper in water as compared with the control. Fish refused to accept the feed immediately after exposure and only began taking it up after about 4-5 h as compared with the control. Weight gain, specific growth rate and condition factor (k) decreased significantly (P <0.05) as compared with the control; this decrease was linearly correlated with the increase of copper concentration in water. Exposure of the fish to different copper concentrations in water significantly (P <0.05) reduced their feed consumption as compared with the control. Values for the feed conversion ratio increased (P <0.05) whereas the protein efficiency ratio and net protein retention values decreased (P <0.05) with the copper level increase in water. The hepatosomatic index increased with the copper concentration increase in water. Body moisture and ash contents were the highest (P <0.05) whereas the fat and gross energy contents were the lowest (P <0.05) in fish reared in water containing 0.5 p.p.m. of copper as compared with others. No significant (P <0.05) differences were observed in the whole body crude protein content of fish exposed to different concentrations of copper as compared with the control. Liver moisture and ash contents increased (P <0.05) whereas the crude protein, fat, nitrogen free extract and gross energy contents decreased (P <0.05) when the fish were exposed to different concentrations of copper as compared with the control. The liver glycogen level decreased whereas the copper level in the whole body and liver increased significantly (P <0.05) with the copper concentration increase in water.",
author = "Amanat Ali and Al-Ogaily, {S. M.} and Al-Asgah, {N. A.} and J. Gropp",
year = "2003",
month = "8",
doi = "10.1046/j.1439-0426.2003.00440.x",
language = "English",
volume = "19",
pages = "183--188",
journal = "Journal of Applied Ichthyology",
issn = "0175-8659",
publisher = "Wiley-Blackwell",
number = "4",

}

TY - JOUR

T1 - Effect of sublethal concentrations of copper on the growth performance of Oreochromis niloticus

AU - Ali, Amanat

AU - Al-Ogaily, S. M.

AU - Al-Asgah, N. A.

AU - Gropp, J.

PY - 2003/8

Y1 - 2003/8

N2 - The study evaluated the effect of different sublethal concentrations of copper in water (0, 0.15, 0.3 and 0.5 p.p.m.) on the behavioural response, growth performance, and whole body and liver composition of Oreochromis niloticus. Hyperactivity and reduced exploratory behaviour were observed when fishes were subjected to different levels of copper in water as compared with the control. Fish refused to accept the feed immediately after exposure and only began taking it up after about 4-5 h as compared with the control. Weight gain, specific growth rate and condition factor (k) decreased significantly (P <0.05) as compared with the control; this decrease was linearly correlated with the increase of copper concentration in water. Exposure of the fish to different copper concentrations in water significantly (P <0.05) reduced their feed consumption as compared with the control. Values for the feed conversion ratio increased (P <0.05) whereas the protein efficiency ratio and net protein retention values decreased (P <0.05) with the copper level increase in water. The hepatosomatic index increased with the copper concentration increase in water. Body moisture and ash contents were the highest (P <0.05) whereas the fat and gross energy contents were the lowest (P <0.05) in fish reared in water containing 0.5 p.p.m. of copper as compared with others. No significant (P <0.05) differences were observed in the whole body crude protein content of fish exposed to different concentrations of copper as compared with the control. Liver moisture and ash contents increased (P <0.05) whereas the crude protein, fat, nitrogen free extract and gross energy contents decreased (P <0.05) when the fish were exposed to different concentrations of copper as compared with the control. The liver glycogen level decreased whereas the copper level in the whole body and liver increased significantly (P <0.05) with the copper concentration increase in water.

AB - The study evaluated the effect of different sublethal concentrations of copper in water (0, 0.15, 0.3 and 0.5 p.p.m.) on the behavioural response, growth performance, and whole body and liver composition of Oreochromis niloticus. Hyperactivity and reduced exploratory behaviour were observed when fishes were subjected to different levels of copper in water as compared with the control. Fish refused to accept the feed immediately after exposure and only began taking it up after about 4-5 h as compared with the control. Weight gain, specific growth rate and condition factor (k) decreased significantly (P <0.05) as compared with the control; this decrease was linearly correlated with the increase of copper concentration in water. Exposure of the fish to different copper concentrations in water significantly (P <0.05) reduced their feed consumption as compared with the control. Values for the feed conversion ratio increased (P <0.05) whereas the protein efficiency ratio and net protein retention values decreased (P <0.05) with the copper level increase in water. The hepatosomatic index increased with the copper concentration increase in water. Body moisture and ash contents were the highest (P <0.05) whereas the fat and gross energy contents were the lowest (P <0.05) in fish reared in water containing 0.5 p.p.m. of copper as compared with others. No significant (P <0.05) differences were observed in the whole body crude protein content of fish exposed to different concentrations of copper as compared with the control. Liver moisture and ash contents increased (P <0.05) whereas the crude protein, fat, nitrogen free extract and gross energy contents decreased (P <0.05) when the fish were exposed to different concentrations of copper as compared with the control. The liver glycogen level decreased whereas the copper level in the whole body and liver increased significantly (P <0.05) with the copper concentration increase in water.

UR - http://www.scopus.com/inward/record.url?scp=0141452130&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0141452130&partnerID=8YFLogxK

U2 - 10.1046/j.1439-0426.2003.00440.x

DO - 10.1046/j.1439-0426.2003.00440.x

M3 - Article

VL - 19

SP - 183

EP - 188

JO - Journal of Applied Ichthyology

JF - Journal of Applied Ichthyology

SN - 0175-8659

IS - 4

ER -