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Title: Effects of polyherbal formulation ‘ImmuPlus’ on immunity and disease resistance of Indian major carp, <i style="">Labeo rohita</i> at different stages of growth
Authors: Kumari, Jaya
Sahoo, P K
Giri, S S
Keywords: <i style="">Aeromonas hydrophila</i>
ImmuPlus (AquaImmu)
<i style="">Labeo rohita</i>
Issue Date: Mar-2007
Publisher: CSIR
Abstract: A series of experiments were performed to determine the impact of polyherbal immunomodulatory formulation ‘ImmuPlus (AquaImmu) on growth, immunity and disease resistance of rohu (<i style="">Labeo rohita</i>), one of the Indian major carp at different stages of growth. Rohu larvae were fed on plankton, ImmuPlus-mixed compound feed, and plankton plus ImmuPlus-mixed compound feed (ImmuPlus added at three dose levels of 0.25, 0.50, and 0.75 g/kg feed) from 4<sup>th</sup> day of hatching to 14<sup>th</sup> day. ImmuPlus-mixed diets enhanced growth of larvae, survival and disease resistance against <i style="">Aeromonas hydrophila</i> challenge, compared to only plankton-fed group. In two other experiments, advanced rohu larvae and fingerlings were fed with ImmuPlus-mixed compound feed (at 0, 0.5, 1.0 and 2.0 g/kg) for 15, 30 and 45 days. At the end of 45 days for advanced larvae and 30 days for fingerlings, the fish fed with ImmuPlus at 1.0 g/kg level showed significantly higher growth and disease resistance against <i style="">A</i>. <i style="">hydrophila</i> challenge. In a separate experiment, juveniles of rohu were fed with 1 g/kg of ImmuPlus incorporated feed for 15 and 30 days. At the end of the trial, the ImmuPlus fed fish showed enhanced non-specific immunity (as measured through nitroblue tetrazolium reduction assay, serum lysozyme activity, serum haemolysin titre and resistance against <i style="">A. hydrophila</i> challenge in non-vaccinated fish as well as specific immunity levels (as measured through bacterial agglutination titre against <i style="">A. hydrophila</i> in vaccinated fish). Incorporation of ImmuPlus at 1 g/kg level in the diet of rohu may be beneficial for enhancing disease resistance.
Description: 291-298
ISSN: 0975-1009 (Online); 0019-5189 (Print)
Appears in Collections:IJEB Vol.45(03) [March 2007]

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