A Combination of Novel Microecological Agents and Molasses Role in Digestibility and Fermentation of Rice Straw by Facilitating the Ruminal Microbial Colonization

Ma, Yulin; Xu, Chaoqian; Khan, Muhammad Zahoor; Xiao, Jianxin; Cao, Zhijun

doi:10.3389/fmicb.2022.948049

Cited by 7 publications

(6 citation statements)

References 95 publications

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“…Our results showed that YC supplementation could increase the ruminal propionate content through regulating the bacterial composition. In the rumen, the important butyrate-producing bacteria are Butyrivibrio fibrisolvens strains, and the typical characteristic of bacteria belonging to genus Butyrivibrio is to produce butyrate (Ma et al 2022 ). Improvement in Butyrivibrio relative abundance when supplemented with yeast product was reported in previous research (Xiao et al 2016 ).…”

Section: Discussionmentioning

confidence: 99%

Effects of yeast culture on in vitro ruminal fermentation and microbial community of high concentrate diet in sheep

Wang,

Liu,

Zhou

et al. 2024

AMB Expr

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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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Section: Discussionmentioning

confidence: 99%

Effects of yeast culture on in vitro ruminal fermentation and microbial community of high concentrate diet in sheep

Wang,

Liu,

Zhou

et al. 2024

AMB Expr

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“…Li et al [ 27 ] demonstrated that the abundance of Pseudobutyrivibrio has increased linearly with increasing neutral detergent fiber and acid detergent fiber in the diet of sheep. In addition to Pseudobutyrivibrio , Ma et al [ 28 ] indicated that Succinimonas in the rumen also play a critical role in forage degradation. Conversely, owing to the reduction in the usage of corn straw (containing more xylan, hemicellulose, and fiber) in this study, there were decreases in the abundance of Pseudobutyrivibrio and Succinimonas , suggesting the rumen microflora adapted to the change in dietary ingredients.…”

Section: Discussionmentioning

confidence: 99%

Impact of 5–20% Hydroponic Wheat Sprouts Inclusion on Growth and Metabolic Parameters of Growing Ewes

Min,

Tuo,

et al. 2024

Animals

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The aim of this study was to assess the impact of varying proportions (5–20%) of hydroponic wheat sprouts in the diet of growing four-month-old Hu ewes on their productive performance, metabolic profiles, rumen fermentation, and alterations in microflora. Compared with the control group (CON), the optimum final weight of ewes has been presented in the group of substitution 15% (S15) of the basal diet with hydroponic wheat sprouts. Furthermore, 1–30 d the average daily gain (ADG), 31–60 d ADG, and average feed intake were both significantly improved in S15 compared with CON (p < 0.05). Feeding hydroponic wheat sprouts can significantly increase high-density lipoprotein and interleukin-2 (p < 0.05) accompanied by the numerical increase of the content of interferon-γ, suggesting its positive effect on ewes’ health and immune systems. In this process, it is noteworthy that feeding hydroponic wheat sprouts results in an increase in relative abundance of Olsenella, Limosilactobacillus, Shuttleworthia, and Prevotella_7, and a decrease in relative abundance of Succinimonas, Pseudobutyrivibrio, and Anaerovibrio in the rumen of growing ewes. It implies that the response of rumen microflora adapted to the change of dietary ingredients, as well as the relationship between rumen microflora changes and the improvement of productive performance and immune system in growing ewes. Considering the usage cost and application effect, S15 of the basal diet with hydroponic wheat sprouts could be the appropriate application solution for growing ewes.

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“…Prevotella species are associated with a plant-rich diet rich in carbohydrates and fiber ( 22 ). Prevotella has the potential to digest and break down complex carbohydrates from food, sugars, and cellulose ( 23 ).…”

Section: Discussionmentioning

confidence: 99%

Altered rumen microbiome and correlations of the metabolome in heat-stressed dairy cows at different growth stages

Feng,

Zhang,

Liu

et al. 2023

Microbiol Spectr

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Heat stress is one of the major stressors affecting dairy cow production, which causes great losses in animal husbandry production and economic development. This study combined 16S rDNA sequencing, metagenomic sequencing, and metabolomic analysis to investigate the effects of heat stress on the rumen microbiome and metabolism of cows. To achieve this, 10 cows each of growing heifers, heifers, and lactating cows were selected for sample collection in April and August (a total of 60 cows). Ruminal fluid was collected, filtered through gauze, and immediately transferred to liquid nitrogen prior to metagenomic, 16S rDNA sequencing, and metabolomic analyses. Heat stress increased the abundance of pathogenic bacteria, such as Treponema_2 , Sphingobacterium , and Streptococcus , in cattle at all growth stages, with the structure and composition of rumen microbial communities being the most affected by heat stress in growing heifers and the least affected by heat stress in lactating cows. Heat stress led to a significant decrease in carbohydrate metabolic function in growing heifers and heifers, whereas microbial function was the most stable in lactating cows, suggesting that changes in microbial function are not only more conserved than microbial composition but are also affected by age. Heat stress led to significant enrichment of fatty acyl metabolites in growing heifers, heifers, and lactating cows, and the heat stress indicator species Bacillus , Lactococcus , Streptococcus , and Enterococcus were significantly associated with fatty acyl compounds in growing heifers and heifers. Therefore, heat stress alters the metabolic status of cows by modulating fatty acid biosynthesis, the PPAR signaling pathway, and arachidonic acid metabolism through the regulation of long-chain fatty acids and other biomarkers in cows at three growth stages. IMPORTANCE Heat stress is one of the main causes of economic losses in the dairy industry worldwide; however, the mechanisms associated with the metabolic and microbial changes in heat stress remain unclear. Here, we characterized both the changes in metabolites, rumen microbial communities, and their functional potential indices derived from rumen fluid and serum samples from cows at different growth stages and under different climates. This study highlights that the rumen microbe may be involved in the regulation of lipid metabolism by modulating the fatty acyl metabolites. Under heat stress, the changes in the metabolic status of growing heifers, heifers, and lactating cows were closely related to arachidonic acid metabolism, fatty acid biosynthesis, and energy metabolism. Moreover, this study provides new markers for further research to understand the effects of heat stress on the physiological metabolism of Holstein cows and the time-dependent changes associated with growth stages.

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A Combination of Novel Microecological Agents and Molasses Role in Digestibility and Fermentation of Rice Straw by Facilitating the Ruminal Microbial Colonization

Cited by 7 publications

References 95 publications

Effects of yeast culture on in vitro ruminal fermentation and microbial community of high concentrate diet in sheep

Effects of yeast culture on in vitro ruminal fermentation and microbial community of high concentrate diet in sheep

Impact of 5–20% Hydroponic Wheat Sprouts Inclusion on Growth and Metabolic Parameters of Growing Ewes

Altered rumen microbiome and correlations of the metabolome in heat-stressed dairy cows at different growth stages

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