Use of dietary ginger, Zingiber officinale Roscoe, as an immunostimulant to control Aeromonas hydrophila infections in rainbow trout, Oncorhynchus mykiss (Walbaum).
Ginger, Zingiber officinale, which was fed at 0, 0.05, 0.1, 0.5 and 1.0 g per 100 g of feed for 14 days to rainbow trout, Oncorhynchus mykiss (Walbaum), led to control of experimental infection with Aeromonas hydrophila. At 0.5 g ginger per 100 g of feed, there was a reduction in mortalities to 0% compared with the controls (64%). Moreover, there was a significant increase in growth, feed conversion and protein efficiency. There was proliferation in the number of neutrophils, macrophages and lymphocytes, and enhanced phagocytic, respiratory burst, lysozyme, bactericidal and anti-protease activities compared with the controls.
School of Life Sciences, Heriot-Watt University, Edinburgh, UK.
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D000276:Adjuvants, Immunologic / Q000008:administration & dosage*; D016980:Aeromonas hydrophila / Q000502:physiology*; D000818:Animals; D001772:Blood Cell Count; D015169:Colony Count, Microbial; D004032:Diet / Q000662:veterinary; D019587:Dietary Supplements; D005393:Fish Diseases / Q000178:diet therapy*; D020939:Zingiber officinale; D016905:Gram-Negative Bacterial Infections / Q000178:diet therapy / Q000662:veterinary*; D006454:Hemoglobins / Q000032:analysis; D007113:Immunity, Innate / Q000276:immunology; D009113:Muramidase / Q000097:blood; D017686:Oncorhynchus mykiss / Q000254:growth & development / Q000276:immunology*; D010587:Phagocytosis / Q000276:immunology; D013481:Superoxides / Q000097:blood
D000276:Adjuvants, Immunologic; D006454:Hemoglobins; D013481:Superoxides; D009113:Muramidase