Effects of Dietary Short-chain Fructooligosaccharides on Intestinal Microflora, Survival, and Growth Performance of Juvenile White Shrimp, Litopenaeus vannamei |
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| Authors: | Zhigang Zhou Zhaokun Ding L V Huiyuan |
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| Institution: | Institute for Marine Biology, Shantou University, Guangdong 515063 China; Institute for Marine Biology, Shantou University, Guangdong 515063 China and Institute of Fisheries Sciences, Faculty of Animal Sciences and Technology, Guangxi University, Guangxi 530004 China; College of Animal Science, Jiangxi Agriculture University, Nanchang 330045 China |
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| Abstract: | Abstract.— Five groups of juvenile white shrimp, Litopenaeus vannamei , in triplicate were separately fed a compound diet with additional short-chain fructooligosaccharides (ScFOS, Profeed® 95%) 0, 0.4, 0.8, 1.2, or 1.6 g/kg dried diet for 8 wk to investigate the effects of ScFOS on the intestinal microflora, survival, and growth performance of the shrimp. The juvenile shrimp with around 0.17 g of initial body weight were divided into 30 per tank and reared in a standard water recirculation system at 28 C. The shrimp were fed five times a day. At the end of experiment, the shrimp were weighed and their intestinal samples were analyzed for the amounts of Vibrio parahaemolyticus, Aeromonas hydrophila, Lactobacillus sp. , and Streptococcus faecalis using selective agar. The results showed that the shrimps' weight gain and specific growth rate increased with the increment of dietary ScFOS, while their feed conversion ratio decreased. The result was the best when an additional ScFOS 0.4 g/kg dried diet was used. |
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