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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/44929

Title: Effect of dietary β-1, 3-glucan on resistance to white spot syndrome virus (WSSV) in postlarval and juvenile Penaeus monodon
Authors: Chang, C.F.;Su, M.S.;Chen, H.Y.;Lo, C.F.;Kou, G.H.;Liao, I C
Date: 1999
Issue Date: 2017-12-13T03:40:02Z
Publisher: Disease of Aquatic Organisms
Abstract: This study evaluated the effectiveness of dietary incorporation of beta-1,3-glucan from Schizophyllum commune in enhancing the resistance of postlarval (PL15) or juvenile (5.5 +/- 0.5 g) Penaeus monodon to white spot syndrome virus (WSSV). The shrimp were fed experimental diets with (2 g kg(-1) diet) or without beta-1,3-glucan for 15 d (postlarvae) or 10 or 20 d (juveniles). Following these dietary treatments, the postlarvae were challenged by immersion and the juveniles by injection using WSSV solution. After challenge with WSSV, initial mortality was significantly (p < 0.005) lower in all the glucan-fed groups than in the respective non-glucan control groups. In the juvenile groups, glucan supplementation for 20 d rather than 10 d significantly (p < 0.005) enhanced survival. After the WSSV challenge. none of the control diet postlarvae or juveniles survived beyond 4 d and none of the 10 d glucan-fed juveniles survived beyond 6 d. By contrast, some of the glucan-treated postlarvae (12.2 %) and some of the 20 d glucan-treated juveniles (20%) were still alive at Day 6. These surviving individuals were reared onwards up to 120 d post-challenge, at which time overall survivals were 5.5 % (postlarvae) and 13.3% (juveniles) and body weights were 25 to 30 g (postlarvae) and 30 to 40 g (juveniles). Half of the surviving postlarvae and 58% of the surviving juveniles were 2-step WSSV polymerase chain reaction (PCR) negative 6 d after challenge. FLU the surviving shrimp were 2-step WSSV PCR negative 120 d after challenge.
Relation: 36, pp.163-168
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/44929
Appears in Collections:[廖一久院士專區] 期刊論文

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