Publication Date:
2021-05-19
Description:
Role of aflatoxin B1 on hematological indexes, histopathological changes, tissue residual, growth and survival
rate of Fenneropenaeus indicus
Some similar cases of aflatoxin chronic poisoning were reported from cultured shrimps in Iran. In this study,
Indian white shrimp, Fenneropenaeus indicus, with a weight of 11.79 ± 1.76 grams were fed with diets
containing 0, 20, 50, 100, 200, 400, 800 and 1600 ppb levels of AFB1 for 8 weeks. Growth performances,
survival rate, residue in muscles and cephalothorax, hematological and histopathological changes were
determined after 4 and 8 weeks. The results showed that after 8 week of feeding shrimps with values of 20, 50
and 100 ppb aflatoxin B1, did not affect the growth rate, but with increased levels of Aflatoxin B1 in feed, the
growth is reduced and the correlation (r) minus the final weight equal to - 0.312. After eight weeks doses of
AFB1 in the diets showed negative correlation to the survival rate, total haemocyte count (THC), total plasma
protein (TPP) equal to -0.603, -0.237 and -0.649 respectively. Histopathological changes were variety necrosis,
degeneration and atrophy of epithelial and secretory cells lining the tubules, infiltration of fibroblasts in the
walls of hepatopancreas tubules, separated muscle bundles in Muscle tissues and intestinal mucosal necrosis and
detachment. Possible amelioration was examined by feeding control and treated shrimp (after eight weeks
exposure to AFB1) by dietary without AFB1 for four weeks. The Recovery was observed in all parameters of 20,
50, 100 and 200 ppb AFB1 treatments but shrimps fed with the 1600 ppb and 800 ppb concentrations of AFB1
exhibited slower growth, more reddish discoloration disseminated over the body and lack of consistency in the
hepatopancreas at 4th week recovery period. After eight weeks, the highest level of aflatoxin B1 residues in
shrimp muscles was observed in 100 ppb treatment that its value was 1.55 ppb, but the highest level of aflatoxin
B1 residues in cephalothorax was observed in 1600 ppb treatment that its value was 7.1 ppb. In terms of public
health, these amounts of aflatoxin in shrimp body are less than permissible limit for human consumption.
Description:
Iranian Fisheries Science Research Institute
Description:
Published
Keywords:
Histopathological
;
Fungus
;
Mycotoxin
;
Shrimp
;
Fenneropenaeus indicus
;
Tissue
;
Survival
Repository Name:
AquaDocs
Type:
Report
,
Refereed
Format:
88pp.
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