Publication Date:
2021-05-19
Description:
The aim of this study was to evaluate the efficacy of white spot virus vaccine produced by gamma iradiation in
the face of Litopenaeus vannamei in comparison with Gracilaria corticata and Saccharomyces cerevisiae Seven
hundred and twenty healthy shrimp SPF L. vannamei subadult with average weight of 10±1.02 g were collected
and divided into 8 groups. The first group (T1) was fed with commercial pellet as control. The second group
(T2) was fed with S. cerevisiae added to shrimp feed (1 g/Kg), the third group (T3) G. corticata so that algae
Gracilaria were dried and added to shrimp feed at the rate of 1500 mg per kg and finally, the fourth group (T4)
was vaccination group which the shrimp were exposed to the vaccine and injected intramuscularly gamma
irradiant WSSV (1µl/gbw) for 10 days. The shrimps of all groups were then injected with WSSV and maintained
for 25 days. Results indicated that the survival rates for groups T4, T3 T2 and T1 were 57.05±3.52%,
22.5±0.5%, 15±1.05% and 00.0±0%, respectively. Ultimately, at the end of the study the shrimp group T4
showed higher hematological data: THC, TPP, SOD, POD and PO. The study concluded that gamma irradiant
WSSV is effective immunostimulants in shrimp L. vannamei and the immunity has better performances than
those of the G. corticata and S. cerevisiae.
Description:
Iranian Fisheries Science Research Institute
Description:
Published
Keywords:
Gracilaria corticata
;
Saccharomyces cerevisiae
;
Litopenaeus vannamei
;
Shrimp
Repository Name:
AquaDocs
Type:
Report
,
Refereed
Format:
54pp.
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