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Forage lignocellulose is an important factor in driving the seasonal dynamics of rumen anaerobic fungi in grazing yak and cattle

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Title Forage lignocellulose is an important factor in driving the seasonal dynamics of rumen anaerobic fungi in grazing yak and cattle
 
Creator Zeyi Liang
Jianbo Zhang
Ahmad, A.A.
Han Jianlin
Gharechahi, J.
Mei Du
Juanshan Zheng
Peng Wang
Ping Yan
Salekdeh, G.H.
Xuezhi Ding
 
Subject lignocellulose
forage
animal feeding
anaerobic bacteria
rumen
yaks
cattle
grazing systems
 
Description Anaerobic fungi (AF) inhabit the gastrointestinal tract of ruminants and play an important role in the degradation of fiber feed. However, limited knowledge is available on seasonal dynamics and inter-species differences in rumen AF community in yak and cattle under natural grazing systems. Using the random forests model, the null model, and structural equation model, we investigated the seasonal dynamics and key driving factors of fiber-associated rumen AF in grazing yak and cattle throughout the year on the Qinghai-Tibet Plateau (QTP). We found that the richness and diversity of rumen AF of grazing yak and cattle in cold season were significantly higher than those in warm season (P < 0.05). We identified 12 rumen AF genera, among which, Cyllamyces, and Orpinomyces were predominant in the rumen of both grazing yak and cattle. LEfSe and random forest analysis showed that Feramyces, Tahromyces, and Buwchfawromyces were important seasonal indicator of rumen AF in grazing yak (P < 0.05), and Caecomyces, Cyllamyces, and Piromyces in grazing cattle (P < 0.05). Null model analysis revealed that the dynamic changes of rumen AF community structure were mainly affected by deterministic factors. Notably, mantel test and structural equation model revealed that forage physical-chemical properties, including dry matter (DM), neutral detergent fiber (NDF), and hemicellulose contents (HC) were the key factors driving the seasonal variations of the rumen AF community (P < 0.05). The results revealed that forage lignocellulose was probably an important factor affecting the seasonal dynamics and inter-species differences of the rumen AF community under natural grazing conditions.
 
Date 2023-09-14
2023-09-21T17:47:51Z
2023-09-21T17:47:51Z
 
Type Journal Article
 
Identifier Zeyi Liang, Jianbo Zhang, Ahmad, A.A., Jianlin Han, Gharechahi, J., Mei Du, Juanshan Zheng, Peng Wang, Ping Yan, Salekdeh, G.H. and Xuezhi Ding. 2023. Forage lignocellulose is an important factor in driving the seasonal dynamics of rumen anaerobic fungi in grazing yak and cattle. Microbiology Spectrum
2165-0497
https://hdl.handle.net/10568/131950
https://doi.org/10.1128/spectrum.00788-23
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Source Microbiology Spectrum