Unravelling vaginal microbial genetic diversity and abundance between Holstein and Fleckvieh cattle

Nesengani, Lucky T.; Wang, Jun; Yang, Yilin; Yang, Lei; Lu, Wenjing

doi:10.1039/c7ra10553c

Cited by 15 publications

(8 citation statements)

References 30 publications

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“…The different sections of the reproductive tract have distinct microbial populations; however, they can still influence each other. The vaginal niche is mainly comprised of the phyla Firmicutes, Bacteroidetes, and Proteobacteria [ 18 , 209 ]. A study of Bos Indicus breeds found the most abundant bacterial genera in the vagina were Aeribacillus , Bacillus , Clostridium , Bacteroides , and Ruminococcus [ 210 ].…”

Section: Microbiome-gut-organ Axesmentioning

confidence: 99%

Utilizing the Gastrointestinal Microbiota to Modulate Cattle Health through the Microbiome-Gut-Organ Axes

et al. 2022

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The microorganisms inhabiting the gastrointestinal tract (GIT) of ruminants have a mutualistic relationship with the host that influences the efficiency and health of the ruminants. The GIT microbiota interacts with the host immune system to influence not only the GIT, but other organs in the body as well. The objective of this review is to highlight the importance of the role the gastrointestinal microbiota plays in modulating the health of a host through communication with different organs in the body through the microbiome-gut-organ axes. Among other things, the GIT microbiota produces metabolites for the host and prevents the colonization of pathogens. In order to prevent dysbiosis of the GIT microbiota, gut microbial therapies can be utilized to re-introduce beneficial bacteria and regain homeostasis within the rumen environment and promote gastrointestinal health. Additionally, controlling GIT dysbiosis can aid the immune system in preventing disfunction in other organ systems in the body through the microbiome-gut-brain axis, the microbiome-gut-lung axis, the microbiome-gut-mammary axis, and the microbiome-gut-reproductive axis.

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Section: Microbiome-gut-organ Axesmentioning

confidence: 99%

Utilizing the Gastrointestinal Microbiota to Modulate Cattle Health through the Microbiome-Gut-Organ Axes

et al. 2022

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“…However, with the advent of advanced technologies such as metagenomics, similar groups of bacteria have been revealed in the Nellore, Holstein, and Fleckvieh cattle. Such bacteria at the phylum level specifically comprised Firmicutes, Bacteroidetes, and Proteobacteria [22,29] as depicted in Figure 2, and that constitute about 30-40% of the total bacteria present in the vaginal niche [30]. Recent studies by Giannattasio-Ferraz et al [31] have also revealed a substantial similarity existing between the vaginal microbiota of Nellore cattle and Gyr (which is also another essential breed) and the main bacterial species described were mainly Aeribacillus, Bacillus, Clostridium, Bacteroides, and Ruminococcus.…”

Section: Vaginal Microfloramentioning

confidence: 99%

Microflora in the Reproductive Tract of Cattle: A Review

Appiah

Wang

2020

Agriculture

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There are microbial communities in and on the bodies of all multicellular organisms, and this microbiota can have a significant impact on the biology of the host. Most studies have focused on the microbiome of the skin, mouth, and gut, whereas relatively little is known about the reproductive microbiome. From the perspective of the bovine reproductive tract, uterine diseases such as metritis and endometritis are traditionally viewed to result only from interactions occurring between the host animal and pathogens originating from either the environment or ascension from the vagina. This outdated opinion has been refuted by recent advanced studies that propose that, in addition to bacteria colonization through the extrinsic and ascending pathways to the vagina, bacteria can also move from the gut to the uterus, which is also associated with reproductive tract disorders. This has led to the concept of the “endogenous route hypothesis”, which has vital inferences for comprehending the etiology of metritis and endometritis. Furthermore, it has opened up the possibility of developing new prophylactic and therapeutic agents as alternatives to antimicrobial agents. In addition, the unveiling of next-generation sequencing technology makes it more convenient to perform detailed sequencing and analysis of data on the cervical, vaginal, and uterine flora and to further study uncultured bacteria in these niches—most importantly, the cervical niche, which previously was thought to have lower bacterial complexity. Research conducted to date has proven that the composition of microflora in a community varies widely between environmental sites, host niches, and health status. Furthermore, it has also been suggested that the occurrence of endometritis in the dairy and beef cattle reproductive tract is neither casual nor indirect but multifactorial. Whether disturbance in the variety of the microflora in the reproductive tract (dysbiosis) has a role in determining the sensitivity to metritis and endometritis is not yet known. This article outlines the current progress in understanding the microflora with regards to the bovine reproductive tract. The compositions of microflora in various niches of the reproductive tract are briefly elucidated. In addition, the functional role of these microflora communities in the reproductive tract is discussed, with particular emphasis on the association of bacterial flora with reproductive disorders and failures. Finally, prophylaxis and therapeutic approaches based on the new comprehension of the effects of antimicrobials, probiotics, and bacteriophages on the composition of the reproductive tract microflora are also considered.

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“…A total of ten bacterial phyla were detected, including Firmicutes (47.5–53.5%) and Bacteroidetes (28.4–31.7%), which accounted for 79.2–82.3% of the total bacteria. Bacteroidetes is the dominant bacterial phylum in the rumen followed by Firmicutes and Proteobacteria [ 31 , 32 ]. However, the relative abundance of Firmicutes increases when the concentrate feed rate increases [ 33 , 34 ].…”

Section: Resultsmentioning

confidence: 99%

Effects of Feed Composition in Different Growth Stages on Rumen Fermentation and Microbial Diversity of Hanwoo Steers

Ryu

Bang

Lee

et al. 2022

Animals

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Ruminants are a major source of greenhouse gas emissions, and information on ruminant fermentation and microorganisms is essential to understand ruminant digestion, which is associated with environmental pollution. The present study investigated rumen fermentation and microbial diversity according to the three different growth stages of four Hanwoo steers: growing (12 months, G), early fattening (18 months, EF), and late fattening (25 months, LF). No significant differences were observed in rumen pH and ammonia nitrogen among growth stages. Total volatile fatty acids were significantly higher and propionate and valerate significantly lower in G than in EF and LF (p < 0.05). Ten bacterial phyla were detected, including Firmicutes (47.5–53.5%) and Bacteroidetes (28.4–31.7%), which accounted for 79.2–82.3% of the total bacteria. Prevotella accounted for the highest proportion (31.6–42.6%) of all bacteria in this study but did not differ significantly among the different growth stages. Metaprevotella abundance was significantly higher in G than in the other treatments (p < 0.05). In addition, Paraprevotella tended to be higher in LF than in the other treatments (p = 0.056). Given the differences in the genera of microorganisms with relatively low abundance, additional experiments are needed to determine the effect on fermentation.

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Unravelling vaginal microbial genetic diversity and abundance between Holstein and Fleckvieh cattle

Cited by 15 publications

References 30 publications

Utilizing the Gastrointestinal Microbiota to Modulate Cattle Health through the Microbiome-Gut-Organ Axes

Utilizing the Gastrointestinal Microbiota to Modulate Cattle Health through the Microbiome-Gut-Organ Axes

Microflora in the Reproductive Tract of Cattle: A Review

Effects of Feed Composition in Different Growth Stages on Rumen Fermentation and Microbial Diversity of Hanwoo Steers

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