title: Influence of β-glucan Leiber(®)Beta-S on selected innate immunity parameters of European eel (Anguilla anguilla) in an intensive farming system.
abstract: Nutritional support plays an important role in promoting high cellular and humoral innate immunity activity and in preventing outbreaks of disease. The effects of β-glucan Leiber(®)Beta-S dietary supplementation on selected nonspecific immune parameters in juvenile European eel (Anguilla anguilla) in an intensive culture system were studied. The fish were fed commercial pellets containing either 0 (control group) or 200 mg Leiber(®)Beta-S kg-1 of feed (glucan-fed group). After four and eight weeks of feeding, the levels of the following immunological parameters were measured: phagocyte respiratory burst activity, phagocyte potential killing activity, lymphocyte proliferation stimulated by concanavaline A or lipopolysaccharide, serum lysozyme activity, and total immunoglobulin (Ig) serum levels. After four and eight weeks of feeding 200 mg Leiber(®)Beta-S kg feed-1 the levels of all immune parameters were statistically significantly higher (p < 0.05) in the glucan-treated group than in the control group. After eight weeks of feeding the fish 200 mg Leiber(®)Beta-S kg feed-1 and after an additional eight weeks in ponds, the levels of all immune parameters, excluding lymphocyte proliferation stimulated by concanavaline A, were statistically significantly higher (p < 0.05) in the glucan-fed group than in the control group. These data suggest that feeding juvenile eel Leiber(®)Beta-S for four and eight weeks might improve innate immunity.
authors.affiliation: Department of Pathology and Immunology, Inland Fisheries Institute in Olsztyn, Poland.
authors.forename: Andrzej K
authors.initials: AK
authors.lastname: Siwicki
authors.affiliation: Department of Microbiology and Clinical Immunology, University of Warmia and Mazury in Olsztyn, Poland.
authors.forename: Patrycja
authors.initials: P
authors.lastname: Schulz
authors.affiliation: Department of Ichthyology, Inland Fisheries Institute in Olsztyn, Poland.
authors.forename: Stanisław
authors.initials: S
authors.lastname: Robak
authors.affiliation: Department of Pathology and Immunology, Inland Fisheries Institute in Olsztyn, Poland.
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Kazuń
authors.affiliation: Department of Pathology and Immunology, Inland Fisheries Institute in Olsztyn, Poland.
authors.forename: Barbara
authors.initials: B
authors.lastname: Kazuń
authors.affiliation: Department of Pathology and Immunology, Inland Fisheries Institute in Olsztyn, Poland.
authors.forename: Edward
authors.initials: E
authors.lastname: Głąbski
authors.affiliation: Department of Microbiology and Clinical Immunology, University of Warmia and Mazury in Olsztyn, Poland.
authors.forename: Ewa
authors.initials: E
authors.lastname: Szczucińska
keywords: eel; immunostimulant; innate immunity; β-glucan