Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12104/41086
Title: Effects of dietary ?-1,3/1,6-glucan on the antioxidant and digestive enzyme activities of Pacific red snapper (Lutjanus peru) after exposure to lipopolysaccharides
Author: Guzman-Villanueva, L.T.
Ascencio-Valle, F.
Macias-Rodriguez, M.E.
Tovar-Ramirez, D.
Issue Date: 2014
Abstract: The effect of ?-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 ?-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 ?-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 ?-glucan. Superoxide dismutase (SOD) activity in liver was significantly higher in diets containing 0.1 % ?-glucan in weeks 4 and 6, compared to the control group. ?-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 % ?-glucan; SOD activity increased in fish fed with 0.1 % ?-glucan in relation to those injected with SS. Feed supplemented with ?-1,3/1,6-glucan increased growth, antioxidant activity, and digestive enzyme activity in Pacific red snapper. Zapotitlán 2013 Springer Science+Business Media Dordrecht.
URI: http://hdl.handle.net/20.500.12104/41086
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