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- Title
Effects of dietary inclusion of various concentrations of S cutellaria baicalensis Georgi extract on growth, body composition, serum chemistry and challenge test of far eastern catfish ( S ilurus asotus).
- Authors
Kim, Kyoung T; Jeon, Gyu H; Cho, Sung H; Lim, Sang G; Kwon, Mun‐Gyeong; Yoo, Jin‐Hyung
- Abstract
Effects of various concentrations of S cutellaria baicalensis ( SB) extract in diets on growth, body composition, serum chemistry and disease challenge test of far eastern catfish ( S ilurus asotus) were determined and compared with a commercially available immune enhancer. Eight experimental diets were prepared in triplicate: control ( Con) diet without supplementation of SB and SB-0.25, SB-0.5, SB-1, SB-2, SB-3 and SB-5 diets containing SB at concentrations of 0.25, 0.5, 1, 2, 3 and 5%, respectively. In addition, 0.1% of a commercial immune enhancer product ( CP) was also tested. No significant difference in weight gain of fish was found. Feed consumption, feed efficiency ratio and protein retention of fish were not affected by the experimental diets. At the end of the 8-week feeding trial, 10 externally normal fish from each tank were infected by V ibrio anguillarum or S trepotococcus iniae. Cumulative mortality of fish fed the Con diet was higher than that of fish fed the all other diets in 10 and 25 days after V . anguillarum or S. iniae infection. Results of this study indicated that dietary inclusion of SB extract was effective in improving survival of eastern catfish after V . anguillarum and S . iniae infection, but the various concentrations of SB did not affect fish performance.
- Subjects
CHINESE skullcap; SCUTELLARIA; SILURUS; SILURIDAE; VIBRIO anguillarum; STREPTOCOCCUS
- Publication
Aquaculture Research, 2013, Vol 44, Issue 10, p1502
- ISSN
1355-557X
- Publication type
Article
- DOI
10.1111/j.1365-2109.2012.03157.x