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Paper Information

Journal:   JOURNAL OF FISHERIES (IRANIAN JOURNAL OF NATURAL RESOURCES)   SUMMER 2016 , Volume 69 , Number 2; Page(s) 173 To 187.
 
Paper: 

THE PROTECTIVE EFFECT OF DIETARY CINNAMON ESSENTIAL OIL (CINNAMOMUM VERUM) SUPPLEMENTATION IN DECREASING THE TOXICITY OF AFLATOXIN B1 TO FINGERLINGS OF RAINBOW TROUT (ONCORHYNCHUS MYKISS)

 
 
Author(s):  KHANI SAIRAN, SARVI MOGHANLOU KOUROSH*, IMANI AHMAD, AGH NASER, RAZI MAZDAK
 
* DEPARTMENT OF FISHERIES, FACULTY OF NATURAL RESOURCES, URMIA UNIVERSITY, IRAN
 
Abstract: 

The present study aimed to investigate protective effects of dietary cinnamon essential oil supplementation on decreasing the toxicity of aflatoxin B1 to rainbow trout fingerlings regarding hematological indices, serum biochemistry and liver histopathology. Fish were randomly exposed to six distinct treatments composed of different combinations of three dietary aflatoxin (0, 25 and 50 ppb) and two dietary cinnamon essential oil (0 and 1 percent) with three respective replicates. The experiment lasted for 60 days. At the end of the experiment, random samples were taken to study the aforementioned indices. Hematocrit, red blood cell count and hemoglobin concentration were positively affected by dietary supplementation of cinnamon essential oil (P<0.05). Dietary aflatoxin also resulted in increased red blood cell count and hemoglobin concentration (P<0.05). Activities of ALP and ALT were increased due to dietary aflatoxin contamination (P<0.05); however, supplementation of cinnamon essential oil lowered the activity of ALP in serum of aflatoxin exposed fish (P<0.05). Total protein and globulin content were only affected by aflatoxin and cinnamon essential oil (P<0.05), while, the interactive effect of aflatoxin and cinnamon essential oil significantly affected albumin and lysozyme activity of serum (P<0.05). Hepatosomatic index of fish were significantly decreased by dietary aflatoxin exposure (P<0.05). Histological observations also showed blood vessels dilation, cytoplasmic degeneration, blood congestion, immune cells infiltration and necrosis in a dose dependent manner. In conclusion, 1 % dietary supplementation of cinnamon essential oil decreased deleterious hepatic tissue changes and also improved hematological and serum biochemical indices of fish fed aflatoxin-contaminated diet especially of those exposed to 25 ppb dietary aflatoxin.

 
Keyword(s): AFLATOXIN B1, CINNAMON ESSENTIAL OIL, HEMATOLOGICAL INDICES, SERUM BIOCHEMISTRY, RAINBOW TROUT (ONCHORHYNCHUS MYKISS)
 
References: 
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