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Asian-Australas J Anim Sci > Accepted Articles
DOI: https://doi.org/10.5713/ajas.17.0915    [Accepted] Published online January 26, 2018.
Effects of dietary fiber levels on cecal microbiota composition in geese
Yanpin Li1,2, Haiming Yang1, Lei Xu1, Zhiyue Wang1,*, Yue Zhao1, Xiaoshuai Chen1
1Department of Animal Science and Technology,Yangzhou University, Yangzhou City, China
2Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, Korea
Correspondence:  Zhiyue Wang, Tel: +86-514-87979045, Fax: +86-514-87990256, Email: dkwzy@263.net
Received: 18 December 2017   • Revised: 13 January 2018   • Accepted: 18 December 2017
Abstract
Objective:This study shows the effects of dietary fiber levels on cecal microbiota composition in geese at day 70 according to pyrosequencing of the 16S ribosomal RNA gene.
Methods:A total of 468 1-day-old healthy male Yangzhou goslings with similar body weight were randomly divided into 3 groups with 6 replicates per group and 26 geese per replicate. Geese were fed diets with fiber levels of 2.5% (Low fiber level diet, Group I) and 6.1% (Group III) during days 1-70, respectively, or 4.3% for days 1-28 and 6.1% for days 29-70 (Group II).
Results:Low fiber level diet decreased body weight, average daily gain during, increased lower feed conversation rate of geese during day 1 to 70 (P<0.05). Low fiber level diet decreased the total operational taxonomic units (OTU), Chao1 index and Shannon index, whereas increased the Simpson index of cecal microbiota in geese at day 70. Low fiber level diet decreased the relative abundance of Bacteroidetes, Firmicutes, Bacteroides and Paraprevotella in cecum of geese at day 70. The similarity of cecal microbiota between low fiber level diet group and other groups was smaller. Conclusion:This study indicates that the low fiber level diet decreased diversity of microbiota, and relative abundance of some beneficial microbiota in cecum of geese at day 70, implying that the low fiber level diet has negative influence on performance by altering the diversity and population of cecal microbiota in geese.
Keywords: Fiber; Goose; Cecum; Microbiota


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