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Artículos de revistas sobre el tema "Rumen Microbiology"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 31 de enero de 2023

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1

Flachowsky, Gerhard. "Rumen Microbiology." Animal Feed Science and Technology 113, no. 1-4 (March 2004): 253–54. http://dx.doi.org/10.1016/j.anifeedsci.2003.09.002.

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2

France, J., and J. Dijkstra. "Applications of biomathematics to rumen microbiology." Reproduction Nutrition Development 37, Suppl. 1 (1997): 59–60. http://dx.doi.org/10.1051/rnd:19970740.

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3

TKALCIC, SUZANA, CATHY A. BROWN, BARRY G. HARMON, ANANT V. JAIN, ERIC P. O. MUELLER, ANDREW PARKS, KAREN L. JACOBSEN, SCOTT A. MARTIN, TONG ZHAO, and MICHAEL P. DOYLE. "Effects of Diet on Rumen Proliferation and Fecal Shedding of Escherichia coli O157:H7 in Calves." Journal of Food Protection 63, no. 12 (December 1, 2000): 1630–36. http://dx.doi.org/10.4315/0362-028x-63.12.1630.

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Calves inoculated with Escherichia coli O157:H7 and fed either a high-roughage or high-concentrate diet were evaluated for rumen proliferation and fecal shedding of E. coli O157:H7. Calves fed the high-roughage diet had lower mean rumen volatile fatty acid concentrations and higher rumen pH values than did calves fed the high-concentrate diet. Despite these differences in rumen conditions, the calves fed the high-roughage diet did not have greater rumen populations of E. coli O157: H7 and did not exhibit increased or longer fecal shedding compared with the calves fed the high-concentrate diet.

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4

Wang, Yan-Lu, Wei-Kang Wang, Qi-Chao Wu, Fan Zhang, Wen-Juan Li, Sheng-Li Li, Wei Wang, Zhi-Jun Cao, and Hong-Jian Yang. "In Situ Rumen Degradation Characteristics and Bacterial Colonization of Corn Silages Differing in Ferulic and p-Coumaric Acid Contents." Microorganisms 10, no. 11 (November 15, 2022): 2269. http://dx.doi.org/10.3390/microorganisms10112269.

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In plant cell wall, ferulic acid (FA) and p-coumaric acid (pCA) are commonly linked with arabinoxylans and lignin through ester and ether bonds. These linkages were deemed to hinder the access of rumen microbes to cell wall polysaccharides. The attachment of rumen microbes to plant cell wall was believed to have profound effects on the rate and the extent of forage digestion in rumen. The objective of this study was to evaluate the effect of bound phenolic acid content and their composition in corn silages on the nutrient degradability, and the composition of the attached bacteria. Following a

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5

Li, Zhipeng, Gemma Henderson, Yahan Yang, and Guangyu Li. "Diversity of formyltetrahydrofolate synthetase genes in the rumens of roe deer (Capreolus pygargus) and sika deer (Cervus nippon) fed different diets." Canadian Journal of Microbiology 63, no. 1 (January 2017): 11–19. http://dx.doi.org/10.1139/cjm-2016-0424.

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Reductive acetogenesis by homoacetogens represents an alternative pathway to methanogenesis to remove metabolic hydrogen during rumen fermentation. In this study, we investigated the occurrence of homoacetogen in the rumens of pasture-fed roe deer (Capreolus pygargus) and sika deer (Cervus nippon) fed either oak-leaf-based (tannin-rich, 100 mg/kg dried matter), corn-stover-based, or corn-silage-based diets, by using formyltetrahydrofolate synthetase (FTHFS) gene sequences as a marker. The diversity and richness of FTHFS sequences was lowest in animals fed oak leaf, indicating that tannin-conta

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6

Shakira, G., IH Mirza, and A. Latif. "Scope of common DNA based methods for the study of rumen bacterial population." Bangladesh Journal of Animal Science 41, no. 2 (March 10, 2013): 141–46. http://dx.doi.org/10.3329/bjas.v41i2.14134.

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Innovative methods in relation to rumen microbiology are mainly focused on the study of rumen microbial population. Rumen ecosystem is highly responsive to changes in diet, age, antibiotic use, health of the host animal, which varies according to geographical location, season, and feeding scheme. Until recently, knowledge of rumen fermentation was primarily studied using classical culture-based techniques, such as isolation, enumeration and nutritional characterization, which probably only account for 10 to 20% of the rumen microbial biomass. An increase in bacterial numbers recovered from the

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7

ORPIN, C. G., Y. GREENWOOD, F. J. HALL, and I. W. PATERSON. "The rumen microbiology of seaweed digestion in Orkney sheep." Journal of Applied Bacteriology 58, no. 6 (June 1985): 585–96. http://dx.doi.org/10.1111/j.1365-2672.1985.tb01715.x.

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8

KOSTYUKOVSKY, VLADIMIR, TAMIO INAMOTO, TASUKE ANDO, YUTAKA NAKAI, and KEIJI OGIMOTO. "Degradation of hay by rumen fungi in artificial rumen (RUSITEC)." Journal of General and Applied Microbiology 41, no. 1 (1995): 83–86. http://dx.doi.org/10.2323/jgam.41.83.

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9

Qiu, Xinjun, Xiaoli Qin, Liming Chen, Zhiming Chen, Rikang Hao, Siyu Zhang, Shunran Yang, et al. "Serum Biochemical Parameters, Rumen Fermentation, and Rumen Bacterial Communities Are Partly Driven by the Breed and Sex of Cattle When Fed High-Grain Diet." Microorganisms 10, no. 2 (January 30, 2022): 323. http://dx.doi.org/10.3390/microorganisms10020323.

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Hybridization in bovines is practiced with the main aim of improving production performance, which may imply the microbial variations in the rumen from the parental breed cross to their progeny. Besides, the interactions of offspring breed with sex in terms of rumen bacteria are not clear. This study aims to evaluate the variations in rumen bacterial communities in different breeds and sexes, and the correlations among fattening performance, serum biochemical parameters, and rumen fermentation. Forty-two 19.2 ± 0.67-month-old beef cattle (390 ± 95 kg of initial body weight) comprising two gene

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10

Rabee, Alaa Emara, Khalid Z. Kewan, Hassan M. El Shaer, Mebarek Lamara, and Ebrahim A. Sabra. "Effect of olive and date palm by-products on rumen methanogenic community in Barki sheep." AIMS Microbiology 8, no. 1 (2022): 26–41. http://dx.doi.org/10.3934/microbiol.2022003.

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<abstract> <p>Rumen methanogens prevent the accumulation of fermentation gases in the rumen and generate methane that increases global warming and represents a loss in animals' gross energy. Non-traditional feed resources such as the by-products of date palm (<italic>Phoenix dactylifera</italic>) and olive (<italic>Olea europaea</italic>) trees have received attention to be used in animal feeding. This study evaluated the impact of non-traditional feed resources including olive cake (OC), discarded dates (DD), and date palm frond (DPF) in sheep diet on rumen

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11

Malmuthuge, Nilusha, Philip J. Griebel, and Le Luo Guan. "Taxonomic Identification of Commensal Bacteria Associated with the Mucosa and Digesta throughout the Gastrointestinal Tracts of Preweaned Calves." Applied and Environmental Microbiology 80, no. 6 (January 17, 2014): 2021–28. http://dx.doi.org/10.1128/aem.03864-13.

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ABSTRACTBacterial colonization in the gastrointestinal tracts (GIT) of preweaned calves is very important, since it can influence early development and postweaning performance and health. This study investigated the composition of the bacteria along the GIT (rumen, jejunum, ileum, cecum, and colon) of preweaned bull calves (3 weeks old) using pyrosequencing to understand the segregation of bacteria between the mucosal surface and digesta. Phylogenetic analysis revealed that a total of 83 genera belonging to 13 phyla were distributed throughout the GIT of preweaned calves, with theFirmicutes,Ba

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12

Attwood, G. T., W. J. Kelly, E. H. Altermann, C. D. Moon, S. Leahy, and A. L. Cookson. "Application of rumen microbial genome information to livestock systems in the postgenomic era." Australian Journal of Experimental Agriculture 48, no. 7 (2008): 695. http://dx.doi.org/10.1071/ea07408.

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Sequencing the genomes of individual rumen microbes and determining the function of their encoded genes promises to transform our understanding of the microbiology of the rumen. The diversity and density of microbes in the rumen, and our inability to culture the majority of rumen microbes, limit current genome studies to only a small fraction of the microbes present in this environment. Nevertheless, genomes of fibre-degrading organisms are beginning to reveal a previously unexpected abundance of genes encoding glycosyl hydrolases and carbohydrate esterases, which could be used to enhance fibr

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13

Sirohi, S. K., Neha Pandey, B. Singh, and A. K. Puniya. "Rumen methanogens: a review." Indian Journal of Microbiology 50, no. 3 (September 2010): 253–62. http://dx.doi.org/10.1007/s12088-010-0061-6.

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14

Joshi, Akshay, Diana Young, Liren Huang, Lona Mosberger, Bernhard Munk, Julia Vinzelj, Veronika Flad, et al. "Effect of Growth Media on the Diversity of Neocallimastigomycetes from Non-Rumen Habitats." Microorganisms 10, no. 10 (October 5, 2022): 1972. http://dx.doi.org/10.3390/microorganisms10101972.

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Anaerobic fungi (AF), belonging to the phylum Neocallimastigomycota, are a pivotal component of the digestive tract microbiome of various herbivorous animals. In the last decade, the diversity of AF has rapidly expanded due to the exploration of numerous (novel) habitats. Studies aiming at understanding the role of AF require robust and reliable isolation and cultivation techniques, many of which remained unchanged for decades. Using amplicon sequencing, we compared three different media: medium with rumen fluid (RF), depleted rumen fluid (DRF), and no rumen fluid (NRF) to enrich the AF from t

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15

Hook, S. E., K. S. Northwood, A. D. G. Wright, and B. W. McBride. "Long-Term Monensin Supplementation Does Not Significantly Affect the Quantity or Diversity of Methanogens in the Rumen of the Lactating Dairy Cow." Applied and Environmental Microbiology 75, no. 2 (November 21, 2008): 374–80. http://dx.doi.org/10.1128/aem.01672-08.

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ABSTRACT A long-term monensin supplementation trial involving lactating dairy cattle was conducted to determine the effect of monensin on the quantity and diversity of rumen methanogens in vivo. Fourteen cows were paired on the basis of days in milk and parity and allocated to one of two treatment groups, receiving (i) a control total mixed ration (TMR) or (ii) a TMR with 24 mg of monensin premix/kg of diet dry matter. Rumen fluid was obtained using an ororuminal probe on day −15 (baseline) and days 20, 90, and 180 following treatment. Throughout the 6-month experiment, the quantity of rumen m

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16

HARMON, BARRY G., CATHY A. BROWN, SUZANA TKALCIC, P. O. E. MUELLER, ANDREW PARKS, ANANT V. JAIN, TONG ZHAO, and MICHAEL P. DOYLE. "Fecal Shedding and Rumen Growth of Escherichia coli O157:H7 in Fasted Calves." Journal of Food Protection 62, no. 6 (June 1, 1999): 574–79. http://dx.doi.org/10.4315/0362-028x-62.6.574.

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Nine weaned calves aged from 8 to 12 weeks were fitted with rumen cannulas and were inoculated by cannula with 1010 CFU of a five-strain mixture of nalidixic acid-resistant Escherichia coli O157:H7. Six calves were fasted for 48 h on days 15 and 16 and days 22 and 23 after inoculation. Samples of rumen contents and feces were obtained daily to enumerate E. coli O157:H7 populations and to determine rumen volatile fatty acid (VFA) concentrations and rumen pH. Fasting resulted in a marked decrease in rumen VFA concentrations from a mean of 135 mmol/liter before the fast to a mean of 35 mmol/liter

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17

Hook, Sarah E., André-Denis G. Wright, and Brian W. McBride. "Methanogens: Methane Producers of the Rumen and Mitigation Strategies." Archaea 2010 (2010): 1–11. http://dx.doi.org/10.1155/2010/945785.

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Methanogens are the only known microorganisms capable of methane production, making them of interest when investigating methane abatement strategies. A number of experiments have been conducted to study the methanogen population in the rumen of cattle and sheep, as well as the relationship that methanogens have with other microorganisms. The rumen methanogen species differ depending on diet and geographical location of the host, as does methanogenesis, which can be reduced by modifying dietary composition, or by supplementation of monensin, lipids, organic acids, or plant compounds within the

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18

ELLIS, J. L., J. DIJKSTRA, E. KEBREAB, A. BANNINK, N. E. ODONGO, B. W. McBRIDE, and J. FRANCE. "Aspects of rumen microbiology central to mechanistic modelling of methane production in cattle." Journal of Agricultural Science 146, no. 2 (March 26, 2008): 213–33. http://dx.doi.org/10.1017/s0021859608007752.

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SUMMARYMethane, in addition to being a significant source of energy loss to the animal that can range from 0·02 to 0·12 of gross energy intake, is one of the major greenhouse gases being targeted for reduction by the Kyoto protocol. Thus, one of the focuses of recent research in animal science has been to develop or improve existing methane prediction models in order to increase overall understanding of the system and to evaluate mitigation strategies for methane reduction. Several dynamic mechanistic models of rumen function have been developed which contain hydrogen gas balance sub-models fr

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19

Guo, Yanxia, Faiz-ul Hassan, Mengwei Li, Huade Xie, Lijuan Peng, Zhenhua Tang, and Chengjian Yang. "Effect of Sodium Nitrate and Cysteamine on In Vitro Ruminal Fermentation, Amino Acid Metabolism and Microbiota in Buffalo." Microorganisms 10, no. 10 (October 14, 2022): 2038. http://dx.doi.org/10.3390/microorganisms10102038.

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Nitrate is used as a methane inhibitor while cysteamine is considered as a growth promoter in ruminants. The present study evaluated the effect of sodium nitrate and cysteamine on methane (CH4) production, rumen fermentation, amino acid (AA) metabolism, and rumen microbiota in a low protein diet. Four treatments containing a 0.5 g of substrate were supplemented with 1 mg/mL sodium nitrate (SN), 100 ppm cysteamine hydrochloride (CS), and a combination of SN 1 mg/mL and CS 100 ppm (CS+SN), and a control (no additive) were applied in a completely randomized design. Each treatment group had five r

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20

Wang, Shiqin, Jianmin Chai, Guohong Zhao, Naifeng Zhang, Kai Cui, Yanliang Bi, Tao Ma, Yan Tu, and Qiyu Diao. "The Temporal Dynamics of Rumen Microbiota in Early Weaned Lambs." Microorganisms 10, no. 1 (January 11, 2022): 144. http://dx.doi.org/10.3390/microorganisms10010144.

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Weaning affects the development of ruminal bacteria in lambs during early life. However, the temporal dynamics of rumen microbiota in early weaned lambs is unknown compared to conventionally weaned lambs. In this study, one group was reared with their dams (control, CON) and conventionally weaned at 49 days (d), while the other lambs were weaned at 21 d (early weaning, EW) using starter. Rumen microbial samples collected at 26, 35, and 63 d were used for next-generation sequencing. Here, we found that the abundance and diversity of rumen microbiota in EW were significantly lower at 26 and 35 d

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21

LOWE, S. E., M. K. THEODOROU, A. P. J. TRINCI, and R. B. HESPELL. "Growth of Anaerobic Rumen Fungi on Defined and Semi-defined Media Lacking Rumen Fluid." Microbiology 131, no. 9 (September 1, 1985): 2225–29. http://dx.doi.org/10.1099/00221287-131-9-2225.

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22

WANG, HOUFU, PENGFEI LI, XUCHUAN LIU, CHUNYONG ZHANG, QIONGFEN LU, DONGMEI XI, RENHUI YANG, et al. "The Composition of Fungal Communities in the Rumen of Gayals (Bos frontalis), Yaks (Bos grunniens), and Yunnan and Tibetan Yellow Cattle (Bos taurs)." Polish Journal of Microbiology 68, no. 4 (December 2019): 505–14. http://dx.doi.org/10.33073/pjm-2019-050.

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The rumen is a microbial-rich ecosystem in which rumen fungi play an important role in the feed digestion of ruminants. The composition of rumen fungi in free-range ruminants such as gayals, yaks, Tibetan yellow cattle, and the domesticated Yunnan yellow cattle was investigated by sequencing an internal transcribed spacer region 1 (ITS1) using Illumina MiSeq. A total of 285 092 optimized sequences and 904 operational taxonomic units (OTUs) were obtained from the four cattle breeds. The rumen fungi abundance and Chao and Simpson indexes were all higher in free-range ruminants than in domesticat

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23

Mccann, Joshua C., Tryon A. Wickersham, and Juan J. Loor. "High-throughput Methods Redefine the Rumen Microbiome and Its Relationship with Nutrition and Metabolism." Bioinformatics and Biology Insights 8 (January 2014): BBI.S15389. http://dx.doi.org/10.4137/bbi.s15389.

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Diversity in the forestomach microbiome is one of the key features of ruminant animals. The diverse microbial community adapts to a wide array of dietary feedstuffs and management strategies. Understanding rumen microbiome composition, adaptation, and function has global implications ranging from climatology to applied animal production. Classical knowledge of rumen microbiology was based on anaerobic, culture-dependent methods. Next-generation sequencing and other molecular techniques have uncovered novel features of the rumen microbiome. For instance, pyrosequencing of the 16S ribosomal RNA

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24

Rabee, Alaa Emara, Robert Forster, and Ebrahim A. Sabra. "Lignocelluloytic activities and composition of bacterial community in the camel rumen." AIMS Microbiology 7, no. 3 (2021): 354–67. http://dx.doi.org/10.3934/microbiol.2021022.

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<abstract> <p>The camel is well-adapted to utilize the poor-quality forages in the harsh desert conditions as the camel rumen sustains fibrolytic microorganisms, mainly bacteria that are capable of breaking down the lignocellulosic biomass efficiently. Exploring the composition of the bacterial community in the rumen of the camel and quantifying their cellulolytic and xylanolytic activities could lead to understanding and improving fiber fermentation and discovering novel sources of cellulases and xylanases. In this study, Illumina MiSeq sequencing of the V4 region on 16S rRNA was

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25

Krause, D. O., T. G. Nagaraja, A. D. G. Wright, and T. R. Callaway. "Board-invited review: Rumen microbiology: Leading the way in microbial ecology1,2." Journal of Animal Science 91, no. 1 (January 1, 2013): 331–41. http://dx.doi.org/10.2527/jas.2012-5567.

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26

Tokura, Mitsunori, Kazunari Ushida, Kohji Miyazaki, and Yoichi Kojima. "Methanogens associated with rumen ciliates." FEMS Microbiology Ecology 22, no. 2 (January 17, 2006): 137–43. http://dx.doi.org/10.1111/j.1574-6941.1997.tb00365.x.

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27

Wang, Wei-Kang, Wen-Juan Li, Qi-Chao Wu, Yan-Lu Wang, Sheng-Li Li, and Hong-Jian Yang. "Isolation and Identification of a Rumen Lactobacillus Bacteria and Its Degradation Potential of Gossypol in Cottonseed Meal during Solid-State Fermentation." Microorganisms 9, no. 11 (October 21, 2021): 2200. http://dx.doi.org/10.3390/microorganisms9112200.

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Cottonseed meal (CSM) is an important protein feed source for dairy cows. Its inclusion in ruminant diets is limited due to the presence of the highly toxic gossypol though rumen microorganisms are believed to be capable of gossypol degrading and transforming. The objective of the present study was to isolate the gossypol-degrading bacteria from the rumen contents and to assess its potential for gossypol degradation in vitro. A strain named Lactobacillus agilis WWK129 was anaerobically isolated from dairy cows after mixed rumen microorganisms were grown on a substrate with gossypol as the sole

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28

Muck, Richard. "Recent advances in silage microbiology." Agricultural and Food Science 22, no. 1 (March 27, 2013): 3–15. http://dx.doi.org/10.23986/afsci.6718.

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Recent advances in silage microbiology are reviewed. Most new techniques in silage microbiology use the polymerase chain reaction (PCR) to make copies of a portion of the DNA in microorganisms. These techniques allow us to identify and quantify species as well as do community analysis. The PCR-based techniques are uncovering new species, both bacteria and fungi, during storage and feeding. Silage inoculants are widely available, but of greater interest has been research investigating why inoculants are so successful. Various inoculant strains have been found to produce bacteriocins and other c

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29

Qian, Wenxi, ZhiPeng Li, Weiping Ao, Guangyong Zhao, Guangyu Li, and JianPing Wu. "Bacterial community composition and fermentation in the rumen of Xinjiang brown cattle (Bos taurus), Tarim red deer (Cervus elaphus yarkandensis), and Karakul sheep (Ovis aries)." Canadian Journal of Microbiology 63, no. 5 (May 2017): 375–83. http://dx.doi.org/10.1139/cjm-2016-0596.

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The rumen microbiota plays a major role in the metabolism and absorption of indigestible food sources. Xinjiang brown cattle (Bos taurus), Tarim red deer (Cervus elaphus yarkandensis), and Karakul sheep (Ovis aries) are important ruminant species for animal husbandry in the Tarim Basin. However, the microbiota and rumen fermentation of these animals are poorly understood. Here, we apply high-throughput sequencing to examine the bacterial community in the rumen of cattle, red deer, and sheep and measured rumen fermentation products. Overall, 548 218 high-quality sequences were obtained and then

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30

Lockwood, B. C., G. H. Coombs, and A. G. Williams. "Proteinase Activity in Rumen Ciliate Protozoa." Microbiology 134, no. 9 (September 1, 1988): 2605–14. http://dx.doi.org/10.1099/00221287-134-9-2605.

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31

Hao, Yangyi, Yue Gong, Shuai Huang, Shoukun Ji, Wei Wang, Yajing Wang, Hongjian Yang, Zhijun Cao, and Shengli Li. "Effects of Age, Diet CP, NDF, EE, and Starch on the Rumen Bacteria Community and Function in Dairy Cattle." Microorganisms 9, no. 8 (August 23, 2021): 1788. http://dx.doi.org/10.3390/microorganisms9081788.

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To understand the effects of diet and age on the rumen bacterial community and function, forty-eight dairy cattle at 1.5 (M1.5), 6 (M6), 9 (M9), 18 (M18), 23 (M23), and 27 (M27) months old were selected. Rumen fermentation profile, enzyme activity, and bacteria community in rumen fluid were measured. The acetate to propionate ratio (A/P) at M9, M18, and M23 was higher than other ages, and M6 was the lowest (p < 0.05). The total volatile fatty acid (TVFA) at M23 and M27 was higher than at other ages (p < 0.05). The urease at M18 was lower than at M1.5, M6, and M9, and the xylanase at M18

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32

Williams, A. G. "Rumen holotrich ciliate protozoa." Microbiological Reviews 50, no. 1 (1986): 25–49. http://dx.doi.org/10.1128/mmbr.50.1.25-49.1986.

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Williams, A. G. "Rumen holotrich ciliate protozoa." Microbiological Reviews 50, no. 1 (1986): 25–49. http://dx.doi.org/10.1128/mr.50.1.25-49.1986.

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34

Mountfort, Douglas O. "The rumen anaerobic fungi." FEMS Microbiology Letters 46, no. 4 (October 1987): 401–8. http://dx.doi.org/10.1111/j.1574-6968.1987.tb02476.x.

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35

Li, Long-Ping, Ke-Lan Peng, Ming-Yuan Xue, Sen-Lin Zhu, Jian-Xin Liu, and Hui-Zeng Sun. "An Age Effect of Rumen Microbiome in Dairy Buffaloes Revealed by Metagenomics." Microorganisms 10, no. 8 (July 25, 2022): 1491. http://dx.doi.org/10.3390/microorganisms10081491.

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Age is an important factor in shaping the gut microbiome. However, the age effect on the rumen microbial community for dairy buffaloes remains less explored. Using metagenomics, we examined the microbial composition and functions of rumen microbiota in dairy Murrah buffaloes of different ages: Y (1 year old), M (3–5 years old), E (6–8 years old), and O (>9 years old). We found that Bacteroidetes and Firmicutes were the predominant phyla, with Prevotella accounting for the highest abundance at the genus level. The proportion of Bacteroides and Methanobrevibacter significantly increased with

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36

CHEN, YA-BING, DAO-LIANG LAN, CHENG TANG, XIAO-NONG YANG, and JIAN LI. "Effect of DNA Extraction Methods on the Apparent Structure of Yak Rumen Microbial Communities as Revealed by 16S rDNA Sequencing." Polish Journal of Microbiology 64, no. 1 (2015): 29–36. http://dx.doi.org/10.33073/pjm-2015-004.

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To more efficiently identify the microbial community of the yak rumen, the standardization of DNA extraction is key to ensure fidelity while studying environmental microbial communities. In this study, we systematically compared the efficiency of several extraction methods based on DNA yield, purity, and 16S rDNA sequencing to determine the optimal DNA extraction methods whose DNA products reflect complete bacterial communities. The results indicate that method 6 (hexadecyltrimethylammomium bromide-lysozyme-physical lysis by bead beating) is recommended for the DNA isolation of the rumen micro

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37

FAN, Y. Y., S. C. RICKE, C. M. SCANLAN, D. J. NISBET, A. A. VARGAS-MOSKOLA, D. E. CORRIER, and J. R. DELOACH. "Use of Differential Rumen Fluid-Based Carbohydrate Agar Media for Culturing Lactose-Selected Cecal Bacteria from Chickens." Journal of Food Protection 58, no. 4 (April 1, 1995): 361–67. http://dx.doi.org/10.4315/0362-028x-58.4.361.

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A rumen fluid-based differential carbohydrate agar medium for enumerating chicken cecal carbohydrate-utilizing bacteria was tested. Eleven bacteria isolated from a continuous-flow culture that had been seeded with chicken cecal contents were inoculated on fifteen different media in an anaerobic environment. These media included various levels of rumen fluid (0%, 5%, 10%, 16%) and carbohydrate (glucose [GLU], galactose [GAL], lactose[LAC]). Viable cell recovery (colony-forming units [CFU]/direct cell counts × 100%) was higher for 16% rumen fluid-supplemented carbohydrate media than the lower co

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Malgwi, Isaac, János Tossenberger, Veronika Halas, György Végvári, Melinda Kovács, and Ildikó Jócsák. "PCR and qPCR-based applications in rumen microbiology research: a review." Acta Agraria Kaposváriensis 23, no. 1 (September 27, 2019). http://dx.doi.org/10.31914/aak.2330.

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The rumen and its microbial ecosystem play a central role in the overall nutrition and health of ruminant animals. However, development and homeostatic state of the entire gut system is influenced by different interrelated factors. Recent developments in molecular diagnostic tools by using amplicon sequencing of 16S ribosomal RNA and use of high-throughput data generated through applications of pyrosequencing is a promising approach to defining the rumen microbial genome. Several procedures such as genome-wide shotgun sequencing for metagenomic data generation to predict how the rumen microbio

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Park, Tansol, Laura M. Cersosimo, Wenli Li, Wendy Radloff, and Geoffrey I. Zanton. "Pre-weaning Ruminal Administration of Differentially-Enriched, Rumen-Derived Inocula Shaped Rumen Bacterial Communities and Co-occurrence Networks of Post-weaned Dairy Calves." Frontiers in Microbiology 12 (February 26, 2021). http://dx.doi.org/10.3389/fmicb.2021.625488.

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Adult rumen fluid inoculations have been considered to facilitate the establishment of rumen microbiota of pre-weaned dairy calves. However, the sustained effects of the inoculations remain to be explored. In our previous study, 20 pre-weaned dairy calves had been dosed with four types of adult rumen inoculums [autoclaved rumen fluid, bacterial-enriched rumen fluid (BE), protozoal-enriched (PE), and BE + PE] weekly at 3 to 6 weeks of age. To verify the sustained effect of adult rumen inoculation, the rumen bacterial communities, fermentation characteristics, and animal performance measurements

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Liu, Xiaozhen, Qinmeng Liu, Sihuai Sun, Hengxi Sun, Yao Wang, Xihui Shen, and Lei Zhang. "Exploring AI-2-mediated interspecies communications within rumen microbial communities." Microbiome 10, no. 1 (October 7, 2022). http://dx.doi.org/10.1186/s40168-022-01367-z.

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Abstract Background The rumen is an ecosystem with a complex microbial microflora in which microbes initiate biofilm formation by attaching to plant surfaces for plant degradation and are capable of converting feed to nutrients and energy via microbial processes. Quorum sensing (QS) is a cell-to-cell communication mechanism that allows microbes to synchronize the expression of multiple genes in the group to perform social behaviors such as chemotaxis and biofilm formation using self-synthesized QS signaling molecules. Whereas QS has been extensively studied in model microorganisms under pure c

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Jin, Di, Shengguo Zhao, Pengpeng Wang, Nan Zheng, Dengpan Bu, Yves Beckers, and Jiaqi Wang. "Insights into Abundant Rumen Ureolytic Bacterial Community Using Rumen Simulation System." Frontiers in Microbiology 7 (June 28, 2016). http://dx.doi.org/10.3389/fmicb.2016.01006.

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Fan, Qingshan, Metha Wanapat, Tianhai Yan, and Fujiang Hou. "Altitude influences microbial diversity and herbage fermentation in the rumen of yaks." BMC Microbiology 20, no. 1 (December 2020). http://dx.doi.org/10.1186/s12866-020-02054-5.

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Abstract Background Rumen microbiota in ruminants are vital for sustaining good rumen ecology, health, and productivity. Currently, limited information is available regarding the response of yaks (Bos grunniens) to fluctuating environments, especially the rumen microbiome. To address this, we investigated the diet, rumen bacterial community, and volatile fatty acids (VFA) of rumen fluid of yaks raised in the great Qinghai-Tibet plateau (QTP) at 2800 (low altitude, L), 3700 (middle altitude, M), and 4700 m (high altitude, H) above sea level. Results The results showed that despite a partial die

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Gao, Kai, and Chunyin Geng. "Alterations in the rumen bacterial communities and metabolites of finishing bulls fed high-concentrate diets supplemented with active dry yeast and yeast culture." Frontiers in Microbiology 13 (December 20, 2022). http://dx.doi.org/10.3389/fmicb.2022.908244.

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This study investigated the effects of active dry yeast (ADY) and yeast culture (YC) supplementation on rumen bacteria and metabolites in finishing bulls fed high-concentrate diets using the full-length 16S rDNA gene sequencing and liquid chromatography-mass spectrometry. Supplementation with ADY improved the alpha diversity and relative abundance of rumen bacteria, while YC only affected relative abundance of rumen bacteria at the genus level. Sixty-three differential metabolites were identified in rumen fluid after ADY supplementation, and 17 after YC. PICRUSt2 functional prediction showed t

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Anderson, Chiron J., Lucas R. Koester, and Stephan Schmitz-Esser. "Rumen Epithelial Communities Share a Core Bacterial Microbiota: A Meta-Analysis of 16S rRNA Gene Illumina MiSeq Sequencing Datasets." Frontiers in Microbiology 12 (March 15, 2021). http://dx.doi.org/10.3389/fmicb.2021.625400.

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In this meta-analysis, 17 rumen epithelial 16S rRNA gene Illumina MiSeq amplicon sequencing data sets were analyzed to identify a core rumen epithelial microbiota and core rumen epithelial OTUs shared between the different studies included. Sequences were quality-filtered and screened for chimeric sequences before performing closed-reference 97% OTU clustering, and de novo 97% OTU clustering. Closed-reference OTU clustering identified the core rumen epithelial OTUs, defined as any OTU present in ≥ 80% of the samples, while the de novo data was randomly subsampled to 10,000 reads per sample to

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Altermann, Eric, Kerri Reilly, Wayne Young, Ron S. Ronimus, and Stefan Muetzel. "Tailored Nanoparticles With the Potential to Reduce Ruminant Methane Emissions." Frontiers in Microbiology 13 (March 11, 2022). http://dx.doi.org/10.3389/fmicb.2022.816695.

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Agricultural methane produced by archaea in the forestomach of ruminants is a key contributor to rising levels of greenhouse gases leading to climate change. Functionalized biological polyhydroxybutyrate (PHB) nanoparticles offer a new concept for the reduction of enteric methane emissions by inhibiting rumen methanogens. Nanoparticles were functionalized in vivo with an archaeal virus lytic enzyme, PeiR, active against a range of rumen Methanobrevibacter species. The impact of functionalized nanoparticles against rumen methanogens was demonstrated in pure cultures, in rumen batch and continuo

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Cui, Xiongxiong, Zhaofeng Wang, Yuhui Tan, Shenghua Chang, Huiru Zheng, Haiying Wang, Tianhai Yan, Tsedan Guru, and Fujiang Hou. "Selenium Yeast Dietary Supplement Affects Rumen Bacterial Population Dynamics and Fermentation Parameters of Tibetan Sheep (Ovis aries) in Alpine Meadow." Frontiers in Microbiology 12 (July 2, 2021). http://dx.doi.org/10.3389/fmicb.2021.663945.

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Selenium (Se) deficiency is a widespread and seasonally chronic phenomenon observed in Tibetan sheep (Ovis aries) traditionally grazed on the Qinghai–Tibet Plateau (QTP). Effects of the dietary addition of Se-enriched yeast (SeY) on the bacterial community in sheep rumen and rumen fermentation were evaluated with the aim of gaining a better understanding of the rumen prokaryotic community. Twenty-four yearling Tibetan rams [initial average body weight (BW) of 31.0 ± 0.64 kg] were randomly divided into four treatment groups, namely, control (CK), low Se (L), medium Se (M), and high Se (H). Each

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Yin, Xuejiao, Shoukun Ji, Chunhui Duan, Peizhi Tian, Sisi Ju, Hui Yan, Yingjie Zhang, and Yueqin Liu. "Age-Related Changes in the Ruminal Microbiota and Their Relationship With Rumen Fermentation in Lambs." Frontiers in Microbiology 12 (September 20, 2021). http://dx.doi.org/10.3389/fmicb.2021.679135.

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The rumen microbiota is vital for the health and growth performance of the host animal, mainly due to its role in the fermentation of ingested feed within the rumen. Attaining a better understanding of the development of the bacterial community and fermentation in the rumen can provide the theoretical basis for regulating feed utilization. This study analyzed the development of rumen bacteria in lambs from birth to 4 months of age using 16S-rRNA amplicon sequencing data and studied its relationship with ruminal fermentation. Serum levels of metabolites were monitored at 30, 60, 90, and 120 day

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Cheng, Zhiqiang, Zitong Meng, Dejin Tan, Osmond Datsomor, Kang Zhan, Miao Lin, and Guoqi Zhao. "Effects of supplementation of sodium acetate on rumen fermentation and microbiota in postpartum dairy cows." Frontiers in Microbiology 13 (November 21, 2022). http://dx.doi.org/10.3389/fmicb.2022.1053503.

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The primary product of rumen fermentation is acetic acid, and its sodium salt is an excellent energy source for post-partum cows to manage negative energy balance (NEB). However, it is unknown how adding sodium acetate (NAc) may affect the rumen bacterial population of post-partum cows. Using the identical nutritional total mixed ration (TMR), this research sought to characterize the impact of NAc supplementation on rumen fermentation and the composition of bacterial communities in post-partum cows. After calving, 24 cows were randomly assigned to two groups of 12 cows each: a control group (C

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Smith, Paul E., Alan K. Kelly, David A. Kenny, and Sinéad M. Waters. "Differences in the Composition of the Rumen Microbiota of Finishing Beef Cattle Divergently Ranked for Residual Methane Emissions." Frontiers in Microbiology 13 (April 29, 2022). http://dx.doi.org/10.3389/fmicb.2022.855565.

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With the advent of high throughput technology, it is now feasible to study the complex relationship of the rumen microbiota with methanogenesis in large populations of ruminant livestock divergently ranked for enteric emissions. Recently, the residual methane emissions (RME) concept has been identified as the optimal phenotype for assessing the methanogenic potential of ruminant livestock due to the trait’s independence from animal productivity but strong correlation with daily methane emissions. However, there is currently a dearth of data available on the bacterial and archaeal microbial com

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Huang, Yongliang, Guoxiu Wang, Qian Zhang, Zhanyu Chen, Chong Li, Weimin Wang, Xiaoxue Zhang, et al. "Effects of milk replacer feeding level on growth performance, rumen development and the ruminal bacterial community in lambs." Frontiers in Microbiology 13 (January 10, 2023). http://dx.doi.org/10.3389/fmicb.2022.1069964.

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Feeding with a suitable level of milk replacer (MR) can improve the survival rate and stimulate the growth potential of early lambs. However, feeding excessive MR might be detrimental to rumen development and microbial colonization. Herein, we investigated the effects of feeding different levels of MR on rumen digestive function and ruminal microorganisms. Fourteen healthy male Hu lambs with similar birth weights and detailed pedigree records were divided into two groups to receive low (2% of average body weight per day) and high (4% of average body weight per day) levels of MR. We analyzed th

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