Haemato-immunology and histo-architectural changes in <Emphasis Type="Italic">Labeo rohita</Emphasis> fingerlings: effect of dietary aflatoxin and mould inhibitor |
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| Authors: | S Mohapatra N P Sahu A K Pal A K Prusty Vikas Kumar Shivendra Kumar |
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| Institution: | (1) Department of Aquaculture, Central Institute of Fisheries Education, Versova, Mumbai, 400061, India;(2) Department of Fish Nutrition and Biochemistry, Central Institute of Fisheries Education, Versova, Mumbai, 400061, India;(3) Department of Aquaculture System and Animal Nutrition in the Tropics and Subtropics (480b), University of Hohenheim, 70599 Stuttgart, Germany;(4) Krishi Vigyan Kendra, Rajendra Agricultural University, Madhopur, 845454 W. Champaran, Bihar, India; |
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| Abstract: | A feeding trail of 60 days was conducted for delineating the effect of dietary aflatoxin (AFB1) with or without supplementation
of a mixture of mould inhibitor (0.25% clove oil + 0.32% sodium propionate) on haematology, respiratory burst activity and
histology of Labeo rohita fingerlings. Three hundred and sixty fishes (avg. wt. 1.48–1.54 g) were randomly distributed into eight treatment groups.
Eight experimental diets with four different levels of aflatoxin (0, 10, 20 and 40 ppb) with or without mould inhibitor were
prepared. Haematological parameters like total serum protein, albumin, globulin and A:G ratio were significantly (P < 0.05) reduced with increasing levels of aflatoxin in the diet. However, supplementation of mould inhibitor showed enhanced
values when compared to non-supplemented counter parts suggesting ameliorating effects of mould inhibitor on aflatoxin. Total
leucocyte count was higher in aflatoxin-treated groups. Histological observations were complementary to haematological parameters.
Respiratory burst activity was significantly (P < 0.05) decreased in higher aflatoxin-treated groups but not affected significantly (P > 0.05) due to inclusion of inhibitor alone and/or interaction of aflatoxin level and inhibitor in the diet. From this study,
it was concluded that up to 20 ppb aflatoxin level in the diet the haemato-immunological parameters are protected. |
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