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Restorative effect of Azadirachta indicab aqueous leaf extract dip treatment on haematological parameter changes in Cyprinus carpio (L.) experimentally infected with Aphanomyces invadans fungus
Author(s) -
Harikrishnan R.,
Balasundaram C.,
Bhuvaneswari R.
Publication year - 2005
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/j.1439-0426.2005.00614.x
Subject(s) - cyprinus , biology , azadirachta , common carp , veterinary medicine , eosinophil , inoculation , carp , pathogen , lymphocyte , fungus , zoology , botany , microbiology and biotechnology , immunology , fishery , medicine , asthma , fish <actinopterygii>
Summary Common carp, Cyprinus carpio (40 ± 10 g) were inoculated through intramuscular route (2.5 × 10 5 cfu ml −1 ) with the fungal pathogen, Aphanomyces invadans . In the infected group, the total erythrocyte count (RBC), total leucocyte count (WBC), haematocrit (Hct), haemoglobin (Hb), lymphocyte (LYM), monocyte (MON), neutrophil (NEU) and eosinophil (EOS) deviated significantly (P < 0.05) from control values on days 24 and 36. Beginning on day 12 of infection, the fishes were dip treated for 24 days for 5 min daily in water incorporated with 1% aqueous leaf extract of Azadirachta indica (neem); the induced lesion gradually healed and the haematological values attained were near normal (P > 0.05) when compared with the control group.