Harpeni, Esti and Santoso, Limin and Supono, Supono and Wardiyanto, Wardiyanto and Widodo, Ari and Yolanda, Laksmita Effects of Dietary Probiotic Bacillus sp. D2.2 and Sweet Potato Extract on Growth Performance and Resistance to Vibrio harveyi in Pacific white shrimp, Litopenaeus vannamei. Aquacultura Indonesiana. ISSN 2477-6939 (Submitted)

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Abstract

In this study, the effects of oral administration of probiotic Bacillus sp. D2.2 and prebiotic from sweet potato extract on growth performance and resistance against Vibrio harveyi in Pacific Pacific white shrimp (Litopenaeus vannamei) were investigated. During 32-day feeding experiment, 360 individuals of Pacific Pacific white shrimp (PL15) with initial weight of 0.02 ± 0.002 g were fed with basal diet as control (A); supplemented with 6% probiotic and 0% prebiotic (B); 6% probiotic and 2% prebiotic (C); 6% probiotic and 4% prebiotic (D). After the feeding trial, weight gain (WG), average daily growth (ADG), feed conversion ratio (FCR), and survival rate (SR) were assessed. Then, the best feeding treatment together with control were used for challenge test with infectious V. harveyi. WG, ADG and FCR of the shrimp were significantly better in treatment D than those of the shrimp in other treatments. Meanwhile, after the challenge test, survival rate and mean time to death (MTD) of the shrimp fed the supplemented diet were not significantly different (P>0.05). Infection levels in shrimp were evaluated using morphological scoring methods. Infection levels of V. harveyi in shrimp fed the diet were lower compared with control. Keywords: Probiotic Bacillus sp. D2.2; Prebiotic; Growth; Disease Resistance

Item Type: Article
Subjects: S Agriculture > SH Aquaculture. Fisheries. Angling
Divisions: Fakultas Pertanian (FP) > Prodi Ilmu Kelautan
Depositing User: ESTI HARPENI
Date Deposited: 16 Nov 2017 04:44
Last Modified: 16 Nov 2017 04:44
URI: http://repository.lppm.unila.ac.id/id/eprint/5357

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