Nano-Selenium Reduces Concentrations of Fecal Minerals by Altering Bacteria Composition in Feedlot Goats
文献类型： 外文期刊
作者： Liu, Hu 1 ; Mao, Kaiyu 1 ; Peng, Weishi 1 ; Degen, Allan 3 ; Zuo, Gang 4 ; Yang, Yuanting 1 ; Han, Jiancheng 1 ; Wu, Qun 1 ; Wang, Ke 1 ; Jiang, Qinyang 2 ; Zhou, Hanlin 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Zhanjiang Expt Stn, Zhanjiang 524013, Peoples R China
2.Guangxi Univ, Coll Anim Sci & Technol, Nanning 530004, Peoples R China
3.Ben Gurion Univ Negev, Blaustein Inst Desert Res, Wyler Dept Dryland Agr, Desert Anim Adaptat & Husb, IL-8410500 Beer Sheva, Israel
4.Beijing Deyuanshun Biotechnol Co Ltd, Beijing 102206, Peoples R China
5.Chinese Acad Trop Agr Sci, Sanya Res Inst, Sanya 572025, Peoples R China
关键词： growing performance; dry matter intake to average daily gain ratio; heavy metals; fecal bacteria; volatile fatty acids
期刊名称：AGRICULTURE-BASEL （ 影响因子：3.6； 五年影响因子：3.8 ）
ISSN：
年卷期： 2024 年 14 卷 12 期
页码：
收录情况： SCI
摘要： This study examined the effect of dietary supplementation of nano-selenium (nano-Se) on the average daily gain (ADG), fecal bacteria community, and concentrations of fecal minerals and volatile fatty acids in feedlot Hainan black goats. Eighteen goats (18.6 +/- 0.69 kg) were divided randomly into three groups, with each group receiving a different level of supplementary nano-Se (n = six goats per treatment) as follows: (1) 0.0 mg (CON); (2) 0.2 mg; and (3) 0.4 mg nano-Se/kg dry matter intake (DMI). The final body weight (p = 0.012) and ADG increased linearly (p < 0.01), whereas the ratio of DMI to ADG decreased linearly (p < 0.01) with increasing dietary nano-Se levels. Fecal concentrations of Se increased linearly (p < 0.001), whereas Cu (p < 0.01), Zn (p = 0.020), and Fe (p = 0.010) decreased linearly with increasing dietary nano-Se levels. The relative abundances of Treponema (p = 0.046), norank_f__norank_o__Clostridia_UCG-014 (p < 0.01), norank_ f_norank_o__RF39 (p < 0.01), Eubacterium_siraeum_group (p < 0.001), and Family_XIII_AD3011_group (p = 0.040) increased linearly, and unclassified_f__Lachnospiraceae (p < 0.001), Rikenellaceae_RC9_gut_group (p < 0.01), Eubacterium_ruminantium_group (p = 0.021), and Prevotella (p < 0.001) decreased linearly with increasing dietary nano-Se levels. It was concluded that supplementary nano-Se could improve ADG and reduce the DMI to ADG ratio and fecal heavy metals by altering the bacterial community in feedlot goats. We recommend a dietary supplementation of approximately 0.4 mg nano-Se/kg DM for feedlot Hainan black goats, but further research is warranted to determine the precise dose and the possible contamination risks of Se.
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