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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/46511

Title: Dietary vitamin C and its derivatives affect immune responses in grass shrimp, Penaeus monodon
Authors: Min-Hsien Lee
Shi-Yen Shiau
Contributors: 國立臺灣海洋大學:食品科學系
Keywords: Penaeus monodon
grass shrimp
vitamin C
immune response
Date: 2002
Issue Date: 2018-05-21T08:23:06Z
Publisher: Fish & Shellfish Immunology
Abstract: Abstract: Effects of L-ascorbic acid (AA) and its four derivatives, namely L-ascorbyl-2-sulfate (C2S), L-ascorbyl-2-polyphosphate (C2PP), L-ascorbyl-2-monophosphate-Na (C2MP-Na) and L-ascorbyl-2-monophosphate-Mg (C2MP-Mg) on the immune responses of juvenile grass shrimp, Penaeus monodon, were studied. The vitamin C deprived diet together with diets supplemented with either adequate or high (five times adequate) levels of AA, C2S, C2PP, C2MP-Na and C2MP-Mg were each fed to triplicate groups of shrimp (mean initial weight: 0·37±0·01 g) for 8 weeks. Significantly (P< 0·01) higher weight gain (WG), feed efficiency (FE), survival, total haemocyte count (THC), superoxide anion (O−2) production ratio and phenoloxidase (PO) activity were observed in shrimp fed diets supplemented with adequate and high levels of ascorbate than shrimp fed the vitamin C deprived diet, regardless of the ascorbate source. Among the ascorbate sources, shrimp fed C2MP-Mg and C2PP containing diets had higher THC than shrimp fed AA, C2S and C2MP-Na containing diets, regardless of the supplementation level. Shrimp fed adequate levels of C2MP-Mg and C2PP and high levels of C2MP-Mg containing diets had higher O−2 production ratios than shrimp fed AA and C2S containing diets. Shrimp fed adequate levels of C2MP-Mg and C2PP and high levels of C2PP containing diets had higher PO activity than shrimp fed AA, C2S and C2MP-Na containing diets. These data suggest that dietary ascorbate enhances immune responses in P. monodon and different ascorbate sources may affect the immune responses differently.
Relation: 12(2) pp.119-129
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/46511
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