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Fish Shellfish Immunol. 2011 Mar;30(3):845-50. doi: 10.1016/j.fsi.2011.01.008. Epub 2011 Jan 19.

Development of immunity in rainbow trout (Oncorhynchus mykiss, Walbaum) to Aeromonas hydrophila after the dietary application of garlic.

Author information

1
School of Life Sciences, John Muir Building, Heriot-Watt University, Riccarton, Edinburgh EH14 4AS, Scotland, UK. ejnelijah@yahoo.co.uk

Abstract

The development and duration of immune protection against Aeromonas hydrophila infections with garlic as an immunostimulant in rainbow trout Oncorhynchus mykiss was studied. Rainbow trout fingerlings of 14 g average weight were fed with 0 g (=Control), 0.5 g and 1.0 g of garlic 100 g(-1) of feed for 14 days. Physiological factors, biochemical, immunological, haematological parameters and electrolyte indices were evaluated after a further 14, 21 and 28 days before challenge with Aeromonas hydrophila. Fourteen days after the cessation of feeding with garlic, mortality rates of 12% (relative percent survival [RPS] = 86%) and 16% (RPS = 80%) were recorded in groups which received 0.5 g and 1.0 g of garlic 100 g(-1) of feed, respectively, compared to 84% mortalities in the controls. The corresponding RPS 21 days after ending the feeding regime was 75% and 68, respectively. One week later, the RPS had dropped to 55% and 46% in the groups fed with 0.5 g and 1.0 g garlic 100 g(-1) of feed, respectively.

PMID:
21255652
DOI:
10.1016/j.fsi.2011.01.008
[Indexed for MEDLINE]

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