期刊
FISH PHYSIOLOGY AND BIOCHEMISTRY
卷 40, 期 3, 页码 827-837出版社
SPRINGER
DOI: 10.1007/s10695-013-9889-0
关键词
beta 1,3/1,6-Glucan; Antioxidant enzymes; Digestive enzymes; Lutjanus peru; Lipopolysaccharides
资金
- Consejo Nacional de Ciencia y Tecnologia (CONACYT) [CB-2010/157763]
- CONACYT [35304]
The effect of beta-1,3/1,6-glucan, derived from yeast, on growth, antioxidant, and digestive enzyme performance of Pacific red snapper Lutjanus peru before and after exposure to lipopolysaccharides (LPS) was investigated. The beta-1,3/1,6-glucan was added to the basal diet at two concentrations (0.1 and 0.2 %). The treatment lasted 6 weeks, with sampling at regular intervals (0, 2, 4, and 6 weeks). At the end of this period, the remaining fish from either control or beta-glucan-fed fish were injected intraperitoneally with LPS (3 mg kg(-1)) or with sterile physiological saline solution (SS) and then sampled at 0, 24, and 72 h. The results showed a significant increase (P < 0.05) in growth performance after 6 weeks of feeding with beta-glucan. Superoxide dismutase (SOD) activity in liver was significantly higher in diets containing 0.1 % beta-glucan in weeks 4 and 6, compared to the control group. beta-Glucan supplementation at 0.1 and 0.2 % significantly increased aminopeptidase, trypsin, and chymotrypsin activity. At 72 h after injection of LPS, we observed a significant increase in catalase activity in liver from fish fed diets supplemented with 0.1 and 0.2 % beta-glucan; SOD activity increased in fish fed with 0.1 % beta-glucan in relation to those injected with SS. Feed supplemented with beta-1,3/1,6-glucan increased growth, antioxidant activity, and digestive enzyme activity in Pacific red snapper.
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