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Effect of zinc on growth performance and cellular metabolic stress of fish exposed to multiple stresses.

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Title Effect of zinc on growth performance and cellular metabolic stress of fish exposed to multiple stresses.
Not Available
 
Creator Neeraj Kumar*, Krishnani KK, Singh NP
 
Subject Zinc . Growth performance . Metabolic enzymes . Digestive enzymes . Multiple stressors
 
Description Not Available
Global warming due to increasing temperature
and contamination in aquatic environment has been
found to be inducing cellular metabolic stress in fish.
The present study focused on temperature and contamination
in aquatic ecosystems and its alleviation/mitigation.
Hence, this study was conducted to evaluate the
role of zinc to improve growth performance, cellular
metabolic stress, and digestive enzymes of
the Pangasianodon hypophthalmus reared under lead
(Pb) and high temperature. Two hundred and seventythree
fishes were distributed randomly into seven treatments,
each with three replicates. Three isocaloric and
isonitrogenous diets with graded levels of zinc at 0
mg/kg, 10 mg/kg, and 20 mg/kg were prepared. The
Pb in treated water was maintained at the level of 1/21th
of LC50 (4 ppm) and maintained at a temperature of 34
°C in exposure groups. The growth performance in
terms of weight gain (%), protein efficiency ratio
(PER), and specific growth rate (SGR) was found to
be inhibited, and the feed conversion ratio (FCR) was
enhanced in the Pb and high temperature–exposed
group, whereas zinc supplementation has improved
weight gain (%), FCR, PER, and SGR. The liver, gill,
muscle, and kidney tissues of carbohydrate metabolic
enzymes (LDH and MDH), protein metabolic enzymes
(ALT and AST), and liver, gill, and muscle G6PDH and
ATPase as well as intestinal digestives enzymes (proteases,
amylase, and lipase) and intestinal ALP were
significantly affected (p < 0.01) by Pb and high temperature
exposure to P. hypophthalmus. We herein report
the role of zinc in mitigating cellular metabolic stress in
fish exposed to Pb and high temperature.
Not Available
 
Date 2019-12-05T07:08:43Z
2019-12-05T07:08:43Z
2019-11-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/27909
 
Language English
 
Relation Not Available;
 
Publisher Springer