Kinetics of polychlorinated biphenyls in Bactrian camels

The study aimed to determine the accumulation and depuration of polychlorinated biphenyls (PCBs) in Bactrian camels. Four lactating, two-humped camels (Camelus bactrianus) received 0.8 mg PCBs (1.3 μg/kg body weight) daily for 56 days. Then, the depuration of the animals was monitored for the next 4...

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Published in:Emirates journal of food and agriculture 2018-04, Vol.30 (4), p.312-319
Main Authors: Jurjanz, Stefan, Nurseitova, Moldir, Gaukhar Konuspayeva, Zhanna Toregozhina, Faye, Bernard
Format: Article
Language:English
Subjects:
Animals
Bioaccumulation
Blood
Body fat
Body weight
Camelidae
Camels
Camelus
Camelus bactrianus
Chronic illnesses
Congeners
Contaminants
Conventions
Depuration
Dioxins
Exposure
Fatty acids
Field study
Food chains
Kinetics
Lipophilic
Milk
Oils & fats
PCB
PCB compounds
Persistent organic pollutants
Pollutants
Polychlorinated biphenyls
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creator Jurjanz, Stefan
Nurseitova, Moldir
Gaukhar Konuspayeva, Zhanna Toregozhina
Faye, Bernard
description The study aimed to determine the accumulation and depuration of polychlorinated biphenyls (PCBs) in Bactrian camels. Four lactating, two-humped camels (Camelus bactrianus) received 0.8 mg PCBs (1.3 μg/kg body weight) daily for 56 days. Then, the depuration of the animals was monitored for the next 4 months. Milk, blood and hump fat of the camels were sampled every 2 weeks and analyzed. Body weight increased significantly, from approximately 550 to 613 kg, by the end of the study. The fat mass in the humps initially decreased (-2.3 kg, P
doi_str_mv 10.9755/ejfa.2018.v30.i4.1667
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Four lactating, two-humped camels (Camelus bactrianus) received 0.8 mg PCBs (1.3 μg/kg body weight) daily for 56 days. Then, the depuration of the animals was monitored for the next 4 months. Milk, blood and hump fat of the camels were sampled every 2 weeks and analyzed. Body weight increased significantly, from approximately 550 to 613 kg, by the end of the study. The fat mass in the humps initially decreased (-2.3 kg, P&lt;0.05) then increased at the end of the depuration period (+2.0 kg, P&lt;0.05). At the end of the exposure period, the concentrations of the indicator PCBs were 1.6 mg/g hump fat, 0.85 mg/g milk fat and 0.56 mg/L blood serum, i.e., ten times over the background level. The concentrations in the hump fat decreased significantly during the depuration period, for congeners 28, 52, 101 and 118, but did not vary appreciably for the heavily chlorinated congeners 138, 153 and 180. The apparently stable concentrations of the heavier congeners may be an artifact of the reduced fat mass in the humps during the first part of the depuration period, combined with fat mobilization, which may mask the reduction of stored PCBs. PCB concentrations in the milk and blood were not significantly reduced during the depuration periods, as they represent the outflow of PCBs from the pool stored in the humps and have a weak affinity for lipophilic compounds, respectively. Therefore, it should be recommended to avoid the consumption of raw fat from camel hump in polluted areas because this organ would easily bioaccumulate organic pollutants during an exposure and store it over an extended period. 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The apparently stable concentrations of the heavier congeners may be an artifact of the reduced fat mass in the humps during the first part of the depuration period, combined with fat mobilization, which may mask the reduction of stored PCBs. PCB concentrations in the milk and blood were not significantly reduced during the depuration periods, as they represent the outflow of PCBs from the pool stored in the humps and have a weak affinity for lipophilic compounds, respectively. Therefore, it should be recommended to avoid the consumption of raw fat from camel hump in polluted areas because this organ would easily bioaccumulate organic pollutants during an exposure and store it over an extended period. 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identifier ISSN: 2079-052X
ispartof Emirates journal of food and agriculture, 2018-04, Vol.30 (4), p.312-319
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2079-0538
language eng
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subjects Animals
Bioaccumulation
Blood
Body fat
Body weight
Camelidae
Camels
Camelus
Camelus bactrianus
Chronic illnesses
Congeners
Contaminants
Conventions
Depuration
Dioxins
Exposure
Fatty acids
Field study
Food chains
Kinetics
Lipophilic
Milk
Oils & fats
PCB
PCB compounds
Persistent organic pollutants
Pollutants
Polychlorinated biphenyls
title Kinetics of polychlorinated biphenyls in Bactrian camels
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