Effects of yeast culture on in vitro ruminal fermentation and microbial community of high concentrate diet in sheep
文献类型： 外文期刊
作者： Wang, Hongze 1 ; Liu, Guiqiong 1 ; Zhou, Aimin 1 ; Yang, Huiguo 3 ; Kang, Kun 2 ; Ahmed, Sohail 1 ; Li, Biao 2 ; Farooq, Umar 1 ; Hou, Fuqing 4 ; Wang, Chaoli 1 ; Bai, Xue 4 ; Chen, Yan 1 ; Ding, Yi 1 ; Jiang, Xunping 1 ;
作者机构： 1.Huazhong Agr Univ, Key Lab Agr Anim Genet Breeding & Reprod, Minist Educ, Wuhan 430070, Peoples R China
2.Natl key Lab Exploitat & Utilizat Agr Microbial Re, Yichang 443003, Peoples R China
3.Xinjiang Acad Anim Sci, Inst Anim Husb, Urumqi 830013, Peoples R China
4.Natl Sheep Ind Technol Syst Shihezi Comprehens Exp, Shihezi 832000, Peoples R China
5.Mianyang Acad Agr Sci, Mianyang 621023, Peoples R China
关键词： Yeast culture; Rumen fermentation; Gas production; Bacterial community; Fungal community
期刊名称：AMB EXPRESS （ 影响因子：3.7； 五年影响因子：4.0 ）
ISSN： 2191-0855
年卷期： 2024 年 14 卷 1 期
页码：
收录情况： SCI
摘要： This research aimed to investigate effects of different yeast culture (YC) levels on in vitro fermentation characteristics and bacterial and fungal community under high concentrate diet. A total of 5 groups were included in the experiment: control group without YC (CON), YC1 (0.5% YC proportion of substrate dry matter), YC2 (1%), YC3 (1.5%) and YC4 (2%). After 48 h of fermentation, the incubation fluids and residues were collected to analyze the ruminal fermentation parameters and bacterial and fungal community. Results showed that the ruminal fluid pH of YC2 and YC4 groups was higher (P < 0.05) than that of CON group. Compared with CON group, the microbial protein, propionate and butyrate concentrations and cumulative gas production at 48 h of YC2 group were significantly increased (P < 0.05), whereas an opposite trend of ammonia nitrogen and lactate was observed between two groups. Microbial analysis showed that the Chao1 and Shannon indexes of YC2 group were higher (P < 0.05) than those of CON group. Additionally, YC supplementation significantly decreased (P < 0.05) Succinivibrionaceae_UCG-001, Streptococcus bovis and Neosetophoma relative abundances. An opposite tendency of Aspergillus abundance was found between CON and YC treatments. Compared with CON group, the relative abundances of Prevotella, Succiniclasticum, Butyrivibrio and Megasphaera elsdenii were significantly increased (P < 0.05) in YC2 group, while Apiotrichum and unclassified Clostridiales relative abundances were decreased (P < 0.05). In conclusion, high concentrate substrate supplemented with appropriate YC (1%) can improve ruminal fermentation and regulate bacterial and fungal composition.
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