A Mixed Phytogenic Modulates the Rumen Bacteria Composition and Milk Fatty Acid Profile of Water Buffaloes

文献类型： 外文期刊

第一作者： Hassan, Faiz-ul

作者： Hassan, Faiz-ul;Tang, Zhenhua;Li, Mengwei;Peng, Lijuan;Peng, Kaiping;Liang, Xin;Yang, Chengjian;Hassan, Faiz-ul;Tang, Zhenhua;Li, Mengwei;Peng, Lijuan;Peng, Kaiping;Liang, Xin;Yang, Chengjian;Hassan, Faiz-ul;Ebeid, Hossam M.

作者机构：

关键词： mixed phytogenic; rumen bacteria; rumen fermentation; milk yield; fatty acids; buffalo

期刊名称：FRONTIERS IN VETERINARY SCIENCE （ 影响因子：3.412； 五年影响因子：3.588 ）

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年卷期： 2020 年 7 卷

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收录情况： SCI

摘要： This study was aimed to evaluate the effect of a mixed phytogenic (MP) on rumen bacteria and their potential association with rumen fermentation and milk yield parameters in water buffaloes. Twenty Murrah buffaloes were fed a basal diet (consisting of maize silage, brewers' grains, and concentrate mixture) for 6 weeks supplemented with 0 (control), 15 (MP15), 25 (MP25), and 35 (MP35) g of mixed phytogenic/buffalo per d. The mixed phytogenic contained fennel (seeds), ajwain (seeds), ginger (tubers),Swertia chirata(leaves),Citrullus colocynthis(fruit), turmeric, fenugreek (seeds),Terminalia chebula(fruit), licorice (roots), andPhyllanthus emblica(fruit) in equal quantities. After 2 weeks of adaptation, daily milk yield, and weekly milk composition were recorded. On the last day of the experiment (d 42), rumen contents were collected to determine rumen fermentation parameters and bacterial diversity through 16S rRNA sequencing. Results revealed no change in dry matter intake, milk yield and rumen fermentation parameters except pH, which increased (P= 0.029) in response to MP supplementation. The mixed phytogenic increased (P< 0.01) milk fatty acids (C4 to C14:0) in MP15 only. The milk C16:1 content and its unsaturation index were higher (P< 0.05) in MP35 as compared to the control and other treatments. Furthermore, C18:3n3 was higher (P< 0.05) in the control, MP15, and MP25, as compared to MP35. Supplementation of MP tended to increase (P= 0.095) the Shannon index of bacterial alpha diversity and a difference (P< 0.05) among treatment groups was observed in beta diversity. Feeding MP increased theFirmicutes, Proteobacteria, andSpirochaetesbut decreasedBacteroidetesnumerically. In addition, the dominant genusPrevotelladecreased in all treatment groups whilePseudobutyrivibrio, Butyrivibrio, andSuccinivibrioanceaeincreased numerically in MP25 and MP35. The mixed phytogenic promoted groups of rumen bacteria positively associated with milk and fat yield. Overall, our study revealed 14 positive correlations of rumen bacteria with milk yield and eight with rumen fermentation parameters. Our findings reveal substantial changes in the rumen bacteriome composition and milk fatty acid content in response to MP but these results should be interpreted carefully, as the sample size of our study was relatively small.

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