http://scholars.ntou.edu.tw/handle/123456789/14403
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. I-Chiu Liao |
Issue Date: | 1999 | Publisher: | Disease of Aquatic Organisms | Start page/Pages: | 36, pp.163-168 | 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. |
URI: | http://ntour.ntou.edu.tw:8080/ir/handle/987654321/44929 http://scholars.ntou.edu.tw/handle/123456789/14403 |
DOI: | 10.3354/dao036163 Cite this publication CF Chang |
Appears in Collections: | 海洋中心 |
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