兰州大学机构库
Shrub coverage alters the rumen bacterial community of yaks (Bos grunniens) grazing in alpine meadows
Yang, Chuntao1; Tsedan, Guru2; Liu, Yang1; Hou, FJ(侯扶江)1
2020
Source PublicationJOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY   Impact Factor & Quartile Of Published Year  The Latest Impact Factor & Quartile
ISSN2672-0191
EISSN2055-0391
Volume62Issue:4Pages:504-520
page numbers17
AbstractProliferation of shrubs at the expense of native forage in pastures has been associated with large changes in dry-matter intake and dietary components for grazing ruminants. These changes can also affect the animals' physiology and metabolism. However, little information is available concerning the effect of pastoral-shrub grazing on the rumen bacterial community. To explore rumen bacteria composition in grazing yaks and the response of rumen bacteria to increasing shrub coverage in alpine meadows, 48 yak steers were randomly assigned to four pastures with shrub coverage of 0%, 5.4%, 11.3%, and 20.1% (referred as control, low, middle, and high, respectively), and ruminal fluid was collected from four yaks from each pasture group after 85 days. Rumen fermentation products were measured and microbiota composition determined using Ion S5 (TM) XL sequencing of the 16S rRNA gene. Principal coordinates analysis (PCoA) and similarity analysis indicated that the degree of shrub coverage correlated with altered rumen bacterial composition of yaks grazing in alpine shrub meadows. At the phyla level, the relative abundance of Firmicutes in rumen increased with increasing shrub coverage, whereas the proportions of Bacteroidetes, Cyanobacteria and Verrucomicrobia decreased. Yaks grazing in the high shrub-coverage pasture had decreased species of the genus Prevotellaceae UCG-001, Lachnospiraceae XPB1014 group, Lachnospiraceae AC2044 group, Lachnospiraceae FCS020 group and FretibactenUm, but increased species of Christensenellaceae R-7 group, Ruminococcaceae NK4A214 group, Ruminococcus 1, Ruminococcaceae UCG-002, Ruminococcaceae UCG-005 and Lachnospiraceae UCG-008. These variations can enhance the animals' utilization efficiencies of cellulose and hemicellulose from native forage. Meanwhile, yaks grazed in the high shrub-coverage pasture had increased concentrations of ammonia nitrogen (NH3-N) and branched-chain volatile fatty acids (isobutyrate and isovalerate) in rumen compared with yaks grazing in the pasture without shrubs. These results indicate that yaks grazing in a high shrub-coverage pasture may have improved dietary energy utilization and enhanced resistance to cold stress during the winter. Our findings provide evidence for the influence of shrub coverage on the rumen bacterial community of yaks grazing in alpine meadows as well as insights into the sustainable production of grazing yaks on lands with increasing shrub coverage on the Qinghai-Tibet Plateau.
KeywordAlpine shrub meadow Bacterial community Qinghai-Tibet Plateau Shrub Yak
PublisherKOREAN SOCIETY ANIMAL SCIENCE & TECHNOLOGY
DOI10.5187/jast.2020.62.4.504
Indexed BySCIE
Language英语
Funding ProjectStrategic Priority Research Program of Chinese Academy of Sciences[XDA2010010203] ; National Natural Science Foundation of China[31172249] ; Program for Changjiang Scholars and Innovative Research Team in University[IRT17R50]
WOS Research AreaAgriculture ; Biotechnology & Applied Microbiology ; Veterinary Sciences
WOS SubjectAgriculture, Dairy & Animal Science ; Biotechnology & Applied Microbiology ; Veterinary Sciences
WOS IDWOS:000559627800009
PublisherKOREAN SOCIETY ANIMAL SCIENCE & TECHNOLOGY
Original Document TypeArticle
PMID 32803183
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/442130
Collection兰州大学
草地农业科技学院
Corresponding AuthorHou, Fujiang
Affiliation
1.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, Minist Agr, Key Lab Grassland Livestock Ind Innovat,State Key, Lanzhou 730020, Peoples R China
2.Anim Husb Sci & Technol Demonstrat Pk Maqu Cty, Gannan 743000, Peoples R China
First Author AffilicationCollege of Pastoral Agriculture Science and Technology
Corresponding Author AffilicationCollege of Pastoral Agriculture Science and Technology
First Signature AffilicationCollege of Pastoral Agriculture Science and Technology
Recommended Citation
GB/T 7714
Yang, Chuntao,Tsedan, Guru,Liu, Yang,et al. Shrub coverage alters the rumen bacterial community of yaks (Bos grunniens) grazing in alpine meadows[J]. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY,2020,62(4):504-520.
APA Yang, Chuntao,Tsedan, Guru,Liu, Yang,&Hou, Fujiang.(2020).Shrub coverage alters the rumen bacterial community of yaks (Bos grunniens) grazing in alpine meadows.JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY,62(4),504-520.
MLA Yang, Chuntao,et al."Shrub coverage alters the rumen bacterial community of yaks (Bos grunniens) grazing in alpine meadows".JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 62.4(2020):504-520.
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