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Littérature scientifique sur le sujet « Rumen fermentation »

Auteur : Grafiati

Publié le 4 juin 2021

Mis à jour le 10 mars 2023

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Articles de revues sur le sujet "Rumen fermentation"

Purcell, Peter James, Tommy M. Boland, Martin O'Brien et Pádraig O'Kiely. « In vitro rumen methane output of forb species sampled in spring and summer ». Agricultural and Food Science 21, n^o 2 (5 juin 2012) : 83–90. http://dx.doi.org/10.23986/afsci.4811.

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The chemical composition, in vitro rumen fermentation variables and methane (CH4) output of a range of common forb species sampled in spring and summer, and grass silage (14 treatments in total), were determined in this study. Dried, milled herbage samples were incubated in an in vitro rumen batch culture with rumen microbial inoculum (rumen fluid) and buffered mineral solution (artificial saliva) at 39 °C for 24 hours. All herbage chemical composition and in vitro rumen fermentation variables were affected (p<0.001) by treatment. Rumex obtusifolius (in spring and summer), Urtica dioica (summer) and Senecio jacobaea (summer) had lower (p<0.05) CH4 outputs relative to feed dry matter incubated compared with grass silage, reflecting their lower extent of in vitro rumen fermentation.

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NAGARAJA, T. G., S. J. GALITZER, D. L. HARMON et S. M. DENNIS. « EFFECT OF LASALOCID, MONENSIN AND THIOPEPTIN ON LACTATE PRODUCTION FROM IN VITRO RUMEN FERMENTATION OF STARCH ». Canadian Journal of Animal Science 66, n^o 1 (1 mars 1986) : 129–39. http://dx.doi.org/10.4141/cjas86-014.

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Starch fermentations with strained rumen fluid and centrifuged rumen fluid devoid of protozoa were set up to test the effect of lasalocid, monensin, and thiopeptin on L(+) and D(−) lactate production. Protozoa-free rumen fluid was the supernatant from low-speed centrifugation of strained rumen fluid. Starch fermentation in the control (no antibiotic) with centrifuged rumen fluid resulted in higher lactate concentration than the fermentation with strained rumen fluid. Decreased lactate production with strained rumen fluid was attributed to sequestration of starch by protozoa and to enhanced lactate fermentation. Addition of lasalocid or monensin (1.5–48.0 μg mL−1) to the fermentation enhanced L(+) and D(−) lactate production in the presence of protozoa. In the absence of protozoa, lasalocid and monensin inhibited L(+) lactate production; however, D(−) lactate concentration was unaffected. Increased lactate production by lasalocid and monensin in the presence of protozoa was possibly due to inhibition of protozoal engulfment of starch. Thiopeptin had no effect on lactate production in the presence of protozoa but in the absence of protozoa lactate production was inhibited. Similar antibiotic responses were observed at different starch amounts (0.5, 1.5 and 3.0 g) and with starch types (soluble, corn and wheat) and with rumen fluid collected from defaunated cattle. Key words: Antibiotics, cattle, rumen, starch, fermentation, lactic acid

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Jalč, D., et M. Čertík. « Effect of microbial oil, monensin and fumarate on rumen fermentation in artificial rumen ». Czech Journal of Animal Science 50, No. 10 (11 décembre 2011) : 467–72. http://dx.doi.org/10.17221/4238-cjas.

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The objective of this study was to investigate the effect of microbial oil on rumen fermentation of a diet composed of 60% hay and 40% barley in an artificial rumen (Rusitec). Microbial oil (MO) was produced by the fungus Thamnidium elegans. This fungus grew on the wheat bran/spent malt grains (3:1) mixture. The fatty acid composition of microbial oil was as follows: 0.7% C14:0, 15.4% C16:0, 10.1% C18:0, 50.9% C18:1, 13.9% C18:2 and 8.4% C18:3 (GLA, γ-linolenic acid). The effect of monensin MON (66 ppm) and fumarate FUM (6.25 mmol) with and without MO supplementation was also studied. The experiment in Rusitec lasted 11 days. After a stabilization period (5 days), MO was added to fermentation vessel V2 (6 days), MON to fermentation vessel V3 (6 days) and FUM to fermentation vessel V4 (6 days). MO was also added to V3 and V4 on the last day together with MON (V3) and FUM (V4). The fermentation vessel V1 served as control (without additives). The results showed that MO reduced (P < 0.05) mol% acetate and increased (P < 0.05) mol% propionate and n-butyrate. Methane production (mmol/day) was reduced numerically (NS). The efficiency of microbial synthesis (EMS) was also reduced numerically and nitrogen incorporated by the microflora (NM) was reduced significantly in MO supplementation. There were no differences in the rumen fermentation when MO was applied together with MON and FUM compared to the vessel where only MO was applied. No additive effect was observed in the relationship MO-ionophore or MO-FUM. Monensin and fumarate applied separately showed their typical effects on rumen fermentation in vitro.

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Moningkey, Sony A. E., R. A. V. Tuturoong et I. D. R. Lumenta. « PEMANFAATAN ISI RUMEN TERFERMENTASI CELLULOMONAS Sp SEBAGAI CAMPURAN PAKAN KOMPLIT TERNAK KELINCI ». ZOOTEC 40, n^o 1 (31 janvier 2020) : 352. http://dx.doi.org/10.35792/zot.40.1.2020.28245.

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UTILIZATION OF FERMENTED RUMENT CONTENT WITH CELLULOMONAS SP IN MIXED COMPLETE FEED FOR RABBIT. Research conducted to learn how to use cattle rumen content by using fermentation processing techniques to enable this rumen to be used as rabbit feed. The material used in this study consisted of cattle rumen contents, starter Cellulomonas sp, rabbits, complete feed. This research consisted of two phase. The first study used an experimental method with a completely randomized design 4 preparations and 6 replications. The fermentation time consists of 0 hours, 24 hours, 48 hours and 72 hours. For the second study using an experimental method with randomized block design based on the initial body weight of rabbits. The treatment given is the level of use of the best fermented rumen contents in a complete feed ration. Variable which is translated as feed consumption, body weight gain and feed conversion. Research results The first stage of the P4 study sample (72 hours) as the best guideline is seen from the parameters of crude protein and crude fiber. The results of this study indicate that the use of feed using rumen fermentation (IRF) can increase feed consumption and weight gain. The conclusion of this study is the provision of 30% mixture of fermented rumen contents of Cellulomonas sp in complete feed produced the best results seen from the parameters of consumption, weight gain and feed conversion of rabbit.Keywords: Rumen contents, fermentation, Cellulomonas sp, complete feed, rabbits

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Walker, Charles E., James S. Drouillard et Tiruvoor G. Nagaraja. « Optaflexx1 affects rumen fermentation ». Kansas Agricultural Experiment Station Research Reports, n^o 1 (1 janvier 2007) : 88–90. http://dx.doi.org/10.4148/2378-5977.1536.

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Castillo-González, AR, ME Burrola-Barraza, J. Domínguez-Viveros et A. Chávez-Martínez. « Rumen microorganisms and fermentation ». Archivos de medicina veterinaria 46, n^o 3 (2014) : 349–61. http://dx.doi.org/10.4067/s0301-732x2014000300003.

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Banik, B. K., Z. Durmic, W. Erskine, K. Ghamkhar et C. Revell. « In vitro ruminal fermentation characteristics and methane production differ in selected key pasture species in Australia ». Crop and Pasture Science 64, n^o 9 (2013) : 935. http://dx.doi.org/10.1071/cp13149.

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Thirteen current and potential pasture species in southern Australia were examined for differences in their nutritive values and in vitro rumen fermentation profiles, including methane production by rumen microbes, to assist in selection of pasture species for mitigation of methane emission from ruminant livestock. Plants were grown in a glasshouse and harvested at 7 and 11 weeks after sowing for in vitro batch fermentation, with nutritive values assessed at 11 weeks of growth. The pasture species tested differed significantly (P < 0.001) in methane production during in vitro rumen fermentation, with the lowest methane-producing species, Biserrula pelecinus L., producing 90% less methane (4 mL CH4 g–1 dry matter incubated) than the highest methane-producing species, Trifolium spumosum L. (51 mL CH4 g–1 dry matter incubated). Proxy nutritive values of species were found not to be useful predictors of plant fermentation characteristics or methane production. In conclusion, there were significant differences in fermentative traits, including methane production, among selected pasture species in Australia, indicating that the choice of fodder species may offer a way to reduce the impact on the environment from enteric fermentation.

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Rarumangkay, Jeni. « PENGARUH FERMENTASI ISI RUMEN SAPI DENGAN Trichoderma viride TERHADAP ENERGI METABOLIS PADA AYAM BROILER ». ZOOTEC 35, n^o 2 (15 juillet 2015) : 312. http://dx.doi.org/10.35792/zot.35.2.2015.8569.

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THE EFFECT OF DRIED COW RUMEN FERMENTATION WITH TRICHODERMA VIRIDE ON METABOLIZABLE ENERGY VALUE OF BROILER. The purpose of this experiment was to determine the metabolizable energy of dried cow rumen. The experiment use dried cow rumen and dried cow rumen fermented Trichoderma viride during 9 days with 0,3% inoculum dose. The experiment use 18 six weeks old male broiler metabolizable energy parameter were analyzed with Wilcoxon test. The result of this experiment showed fermentation with Trichoderma viride could increase the metabolizable energy of dried cow rumen. Key word : Fermentation of dried cow rumen, broiler, metabolizable energy

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Nagadi, S., M. Herrero et N. S. Jessop. « Effect of frequency of ovine ruminal sampling on microbial activity and substrate fermentation ». Proceedings of the British Society of Animal Science 1999 (1999) : 154. http://dx.doi.org/10.1017/s1752756200003094.

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Food eaten by a ruminant firstly undergoes microbial fermentation within the rumen. Nutritionally important characteristics of the food are the rate and extent of fermentation of its carbohydrate fraction, which can both be estimated using the in vitro gas production technique. The single greatest source of uncontrolled variation in any in vitro rumen fermentation system is the rumen fluid; curves produced from gas production data were influenced significantly by the variation in microbial activity between days (Menke and Steingass, 1988; Beuvink et al, 1992). A more reliable measure of rumen fluid activity is needed. The objective of this study was to determine whether the frequency of sampling of rumen fluid affected the microbial activity and subsequent fermentation.

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Bagheri, M., G. R. Ghorbani, H. R. Rahmani et M. Khorvash. « Effect of yeast and mannan-oligosaccharides on in vitro fermentation of different substrates ». Proceedings of the British Society of Animal Science 2009 (avril 2009) : 91. http://dx.doi.org/10.1017/s1752756200029306.

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Results of yeast effects on in vitro rumen fermentation are inconsistent (Sullivan et al., 1999; Yang et al., 2004). In addition, there is no data on the effect of mannan-oligosacchrides (MOS) and their interaction with yeast on rumen fermentation. This trial was conducted to study the effects of yeast and MOS on rumen fermentation of different substrates.

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Thèses sur le sujet "Rumen fermentation"

Wiryawan, I. Komang Gede. « Microbial control of lactic acidosis in grain-fed sheep ». Title page, contents and summary only, 1994. http://web4.library.adelaide.edu.au/theses/09PH/09phw799.pdf.

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Bibliography: leaves 122-138. Investigates the use of microbial inoculants to prevent the onset of acidosis in acutely grain fed animals; and, the most effective combination of virginiamycin and lactic acid utilising bacteria (selenomonas ruminantium subsp. lactilytica and Megasphaera elsdenii) in controlling lactic acid accumulations in vitro.

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Snyman, Leendert Dekker. « Qualitative characteristics of selected Atriplex nummularia (Hatfield Select) ». Pretoria : [s.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-04022007-162554.

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Yakub, Guliye Abdi. « Energy sources and amino acids in rumen fermentation ». Thesis, University of Aberdeen, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.408786.

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In a rumen simulation technique (RUSITEC), the availability and timing of energy (maltose) supply to amino acids/peptides from thawed (frozen) grass was examined in order to determine if continuous (synchronous), rather than transient (asynchronous, with maltose infused 6 h prior to, or 6 h after feeding RUSITEC with grass), availability of energy was required for optimum ruminal fermentation. The addition and pattern of energy supply (synchronous or asynchronous) did not influence either fibre (DM) degradation or microbial numbers, although there was an indication of increased total volatile fatty acids (TVFA) and acetate production in the continuous (synchronous) maltose supply. However, the supply of energy (maltose), irrespective of the pattern of supply, improved the capture of ammonia. The effects of amino acid supplementation on mixed microorganisms fermenting a range of substrates (maize and grass silages, barley straw, avicel and xylan) that usually form part of ruminant diets were examined using gas syringe incubations. Gas production, measured at 4, 6, 8, 12 and 18 h incubation, increased by 15.6, 18.7, 18.9, 15.0 and 5.4% respectively, in the xylan substrate, suggesting xylan fermentation was stimulated by amino acids supply. This implied xylanolytic organisms within the mixed population benefited more from the amino acids. A subsequent in vitro (syringe) experiment was conducted to identify amino acids that may be simulatory, using a deletion approach where individual amino acids were deleted from a complete mixture of all 20 amino acids normally found in protein. Amino acid additions, either as the complete mixture or with single amino acid deletions, stimulated microbial growth and fermentation rate compared to only ammonia as the N source. Although the individual deletion of aromatic amino acids (notably tyrosine and tryptophan), as well as leucine, seemed to decrease fermentation rate, microbial yield was not affected. The mixed microbial population achieved the highest growth rate and fermentation when complete mixtures of amino acid were provided.

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Holder, Vaughn. « The effects of specific Saccharomyces cerevisiae strains and monensin supplementation on rumen fermentation in vitro ». Pretoria : [s.n.], 2008. http://upetd.up.ac.za/thesis/available/etd-08192008-131813.

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Edwards, Nicholas John. « Nitrogen assimilation by rumen microorganisms : a study of the assimilation of ammonia by rumen bacteria in vivo and in vitro ». Title page, table of contents and abstract only, 1991. http://web4.library.adelaide.edu.au/theses/09PH/09phe2657.pdf.

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Carson, Mark T. « Diet, rumen fermentation pattern and butyrate metabolism in sheep ». Thesis, Queen's University Belfast, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336040.

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Embaby, Mohamed GalalEldeen. « EFFECTS OF UNCONVENTIONAL PLANT OILS AND RUMEN ADAPTATION ON METHANE GAS EMISSION AND RUMEN FERMENTATION CHARACTERISTICS ». OpenSIUC, 2018. https://opensiuc.lib.siu.edu/theses/2353.

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The objectives of this work were to investigate the effects of unconventional oils rich in phenolic compounds and rumen adaption on methane (CH4) gas production and rumen fermentation characteristics under in vitro rumen conditions. For this purpose, two sets of trials were conducted. In the first trial, the effects of blackberry, blueberry, raspberry, pomegranate, black seed and hemp oils on CH4 production and fermentation were examined in three 24 h batch culture experiments. Treatments in each experiment consisted of control (no oil supplement), control plus corn oil, or control plus two of the unconventional oils. Oils were added to rumen cultures at 500 mg/L (equivalent to 3.3 g oil/kg of diet dry matter (DM)). After 24 h of incubation, CH4 production was not different between the control and the corn oil treatments. Of the six unconventional oils tested, only hemp and blueberry oils reduced (P<0.05) CH4 production by 9-16% relative to the control and corn oil treatments. No significant differences were observed between treatments in dry matter digestibility (DMD) or total volatile fatty acids (tVFA). Except for a reduction (P<0.05) in acetate concentration with the raspberry oil, and an increase (P<0.05) in valerate concentration with the pomegranate oil, all other treatments had similar VFA concentrations. In the second trial, the effects of adding oregano essential oil (OEO) to adapted and unadapted rumen cultures on CH4 production and rumen fermentation were evaluated under in vitro condition. Rumen cultures were obtained from continues culture fermenters fed a control diet or control diet plus OEO at 250 mg/day for 10 days. The addition of OEO decreased (P<0.05) ii CH4 production only in adapted cultures. Total VFA and acetate concentrations were greater (P<0.05) in the unadapted than adapted cultures and their concentrations decreased (P<0.05) with the addition of OEO particularly when added to the adapted cultures. Propionate concentrations were also greater (P<0.05) in the unadapted than the adapted cultures and concentrations decreased (P<0.05) with the addition of OEO. Dry matter degradability and total gas production decreased (P<0.03) with the addition of OEO in both cultures and total gas production tended (P<0.13) to be lower when added to the adapted cultures. In conclusion, our results showed that hemp and blueberry oils were moderately effective in reducing rumen CH4 formation without compromising rumen fermentation and digestibility. Oregano Essential oil addition negatively affected rumen fermentation in both adapted and unadapted cultures and the effect was greater in the adapted cultures. The greater effects of OEO on CH4 production in the adapted cultures most likely due to the lower fermentation efficiency in these cultures.

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Karnati, Sanjay Kumar Reddy. « Application of molecular techniques to assess changes in ruminal microbial populations and protozoal generation time in cows and continuous culture ». Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1164662405.

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Zhang, Ning. « Molecular characterization of the ruminal bacterial species Selenomonas ruminantium : a thesis submitted to the University of Adelaide for the degree of Doctor of Philosophy / ». Title page, contents and abstract only, 1992. http://web4.library.adelaide.edu.au/theses/09PH/09phn714.pdf.

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Thesis (Ph.D.)--University of Adelaide, Dept. of Animal Science, Waite Agricultural Research Institute, 1993.
Includes two of author's articles in pocket inside back cover. Includes bibliographical references (leaves 133-150).

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Yohe, Taylor. « Performance and Development of the Rumen in Holstein Bull Calves Fed an Aspergillus oryzae Fermentation Extract ». The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1397769968.

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Livres sur le sujet "Rumen fermentation"

Makkar, Harinder P. S., Philip E. Vercoe et Anthony C. Schlink. In vitro screening of plant resources for extra-nutritional attributes in ruminants : Nuclear and related methodologies. Dordrecht : Springer, 2010.

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International, Symposium on Ruminant Physiology (8th 1994 Willingen Hesse Germany). Ruminant physiology : Digestion, metabolism, growth, and reproduction : proceedings of the Eighth International Symposium on Ruminant Physiology. Stuttgart : Enke, 1995.

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Soest, Peter J. Van. Nutritional ecology of the ruminant. 2^e éd. Ithaca : Comstock Pub., 1994.

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Ternrud, Ingrid. Degradation of untreated and alkali-treated straw polysaccharides in ruminants. Uppsala : Swedish University of Agricultural Sciences, 1987.

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Nutritional ecology of the ruminant : Ruminant metabolism, nutritional strategies, the cellulolytic fermentation and the chemistry of forages and plant fibers. Ithaca [N.Y.] : Comstock Pub. Associates, 1987.

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Tri-National, Workshop Microbial and Plant Opportunities to Improve Lignocellulose Utilization by Ruminants (1990 Athens Georgia). Microbial and plant opportunities to improve lignocellulose utilization by ruminants : Proceedings of the Tri-National Workshop Microbial and Plant Opportunities to Improve Lignocellulose Utilization by Ruminants held in Athens, Georgia, April 30-May 4, 1990 ... New York : Elsevier, 1990.

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K, Sejrsen, Hvelplund T et Nielsen M. O, dir. Ruminant physiology : Digestion, metabolism, and impact of nutrition on gene expression, immunology, and stress. Wageningen : Wageningen Academic Publishers, 2006.

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Kenny, Maria J. Prediction of in vivo digestibility of ruminant feed ingredients by laboratory methods. Dublin : University College Dublin, 1997.

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International Conference on Manipulation of Rumen Microorganisms to Improve Efficieny of Fermentation and Ruminant Production (1992 Alexandria, Egypt). Manipulation of Rumen Microorganisms : Preceedings of the International Conference on Manipulation of Rumen Microorganisms to Improve Efficieny of Fermentation and Ruminant Production, Alexandria, Egypt, 20-23 September, 1992. Alexandria, Egypt : The Department, 1992.

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International, Symposium on Forage Cell Wall Structure and Digestibility (1991 Madison Wis ). Forage cell wall structure and digestibility. Madison, Wis., USA : American Society of Agronomy, Inc., 1993.

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Chapitres de livres sur le sujet "Rumen fermentation"

Nagaraja, T. G., C. J. Newbold, C. J. van Nevel et D. I. Demeyer. « Manipulation of ruminal fermentation ». Dans The Rumen Microbial Ecosystem, 523–632. Dordrecht : Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-009-1453-7_13.

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Ryle, M., et E. R. Ørskov. « Manipulation of Rumen Fermentation and Associative Effects ». Dans Energy Nutrition in Ruminants, 28–42. Dordrecht : Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0751-5_3.

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Carro, M. D., et E. M. Ungerfeld. « Utilization of Organic Acids to Manipulate Ruminal Fermentation and Improve Ruminant Productivity ». Dans Rumen Microbiology : From Evolution to Revolution, 177–97. New Delhi : Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-2401-3_13.

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Makkar, Harinder P. S., et Klaus Becker. « Effect of Quillaja Saponins on in Vitro Rumen Fermentation ». Dans Advances in Experimental Medicine and Biology, 387–94. Boston, MA : Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-0413-5_33.

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Uyeno, Yutaka. « Heat Stress on the Rumen Fermentation and Its Consequence ». Dans Climate Change and Livestock Production : Recent Advances and Future Perspectives, 213–21. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-9836-1_18.

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Bernalier, Annick, G. Fonty et Ph Gouet. « Fermentation Properties of Four Strictly Anaerobic Rumen Fungal Species : H2-Producing Microorganisms ». Dans Microbiology and Biochemistry of Strict Anaerobes Involved in Interspecies Hydrogen Transfer, 361–64. Boston, MA : Springer US, 1990. http://dx.doi.org/10.1007/978-1-4613-0613-9_34.

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Strojan, S. T., et C. J. C. Phillips. « The Effect of Lead on the Rate of Fermentation of Herbage by Rumen Micro-Organisms ». Dans Trace Elements in Man and Animals 10, 772–74. New York, NY : Springer US, 2002. http://dx.doi.org/10.1007/0-306-47466-2_246.

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Oh, J., et A. N. Hristov. « Effects of Plant-Derived Bio-Active Compounds on Rumen Fermentation, Nutrient Utilization, Immune Response, and Productivity of Ruminant Animals ». Dans ACS Symposium Series, 167–86. Washington, DC : American Chemical Society, 2016. http://dx.doi.org/10.1021/bk-2016-1218.ch011.

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Hillman, K., D. Lloyd et A. G. Williams. « Continuous Monitoring of Fermentation Gases in an Artificial Rumen System (Rusitec) Using A Membrane-Inlet Probe on A Portable Quadrupole Mass Spectrometer ». Dans Gas Enzymology, 201–6. Dordrecht : Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5279-9_14.

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Weimer, Paul J. « Ruminal Fermentations to Produce Liquid and Gaseous Fuels ». Dans Rumen Microbiology : From Evolution to Revolution, 265–80. New Delhi : Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-2401-3_18.

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Actes de conférences sur le sujet "Rumen fermentation"

Sarwanto, Doso, Caribu Hadi Prayitno, Nur Hidayat et Harwanto Harwanto. « Quality and Rumen Fermentation Profile of Indigenous Forage on Karst Mountain ». Dans 6th International Seminar of Animal Nutrition and Feed Science (ISANFS 2021). Paris, France : Atlantis Press, 2022. http://dx.doi.org/10.2991/absr.k.220401.042.

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Yulistiani, Dwi, Wisri Puastuti et Yeni Widiawati. « In Vitro Digestibility and Rumen Fermentation of Grass or Rice Straw Basal Diet With or Without Complete Rumen Modifier Supplementation ». Dans Proceedings of International Seminar on Livestock Production and Veterinary Technology. Indonesian Center for Animal Research and Development (ICARD), 2016. http://dx.doi.org/10.14334/proc.intsem.lpvt-2016-p.310-317.

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Maglipon, Kelvin, Kenn Madridano, Jefferson Araojo et John Raymond Barajas. « Alcoholic fermentation of rice hulls hydrolyzed by rumen fluid obtained from slaughterhouse wastes ». Dans 2017 Systems and Information Engineering Design Symposium (SIEDS). IEEE, 2017. http://dx.doi.org/10.1109/sieds.2017.7937708.

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Hanim, Chusnul, Lies Mira Yusiati et Titi Widya Ningrum. « Effect of Sex on Rumen Fermentation Characteristics and Enzyme Activities of Garut Sheep ». Dans 6th International Seminar of Animal Nutrition and Feed Science (ISANFS 2021). Paris, France : Atlantis Press, 2022. http://dx.doi.org/10.2991/absr.k.220401.014.

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Tiven, Nafly Comilo, et Tienni Mariana Simanjorang. « Fat protection with Cinnamomun Burmanii : Its effect on fermentation parameters and rumen microbial activity ». Dans INTERNATIONAL CONFERENCE ON ENERGY AND ENVIRONMENT (ICEE 2021). AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0059522.

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Wahyono, Teguh, S. NW Handani et Firsoni Firsoni. « Effect of Superblock Supplementation to Native Grass Based Diet on Rumen Fermentation In Vitro ». Dans Proceedings of International Seminar on Livestock Production and Veterinary Technology. Indonesian Center for Animal Research and Development (ICARD), 2016. http://dx.doi.org/10.14334/proc.intsem.lpvt-2016-p.132-138.

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Taqwa, Moh Ikmal Khoirozzadit, Zaenal Bachruddin, Lies Mira Yusiati, Nafiatul Umami et Muhlisin Muhlisin. « Lactic Acid Bacterial Fermentation Feed as Basal Ration : Addition Effect of Protein and Carbohydrate Protection on Rumen Fermentation of Bligon Goat ». Dans 9th International Seminar on Tropical Animal Production (ISTAP 2021). Paris, France : Atlantis Press, 2022. http://dx.doi.org/10.2991/absr.k.220207.017.

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« The Effect of Tannin Extracted from Sorghum Seed to Rumen Fermentation Characteristics and Methane Production ». Dans Technology Innovations and Collaborations in Livestock Production for Sustainable Food Systems. IAARD Press, 2021. http://dx.doi.org/10.14334/proc.intsem.lpvt-2021-p.49.

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« Methane Mitigation the in vitro Rumen Fermentation using Combination of Bioindustrial Products of Cashew Nutshell ». Dans Technology Innovations and Collaborations in Livestock Production for Sustainable Food Systems. IAARD Press, 2021. http://dx.doi.org/10.14334/proc.intsem.lpvt-2021-p.38.

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Ramadhan, Rizky, Idat Galih Permana, Anuraga Jayanegara, Muhamad Nasir Rofiq et Dimar Sari Wahyuni. « Supplementation effectivity of cassava and Indigofera zollingeriana leaves extraction on rumen fermentation system of in vitro ». Dans INTERNATIONAL CONFERENCE ON BIOLOGY AND APPLIED SCIENCE (ICOBAS). AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5115730.

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Rapports d'organisations sur le sujet "Rumen fermentation"

Mizrahi, Itzhak, et Bryan A. White. Uncovering rumen microbiome components shaping feed efficiency in dairy cows. United States Department of Agriculture, janvier 2015. http://dx.doi.org/10.32747/2015.7600020.bard.

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Ruminants provide human society with high quality food from non-human-edible resources, but their emissions negatively impact the environment via greenhouse gas production. The rumen and its resident microorganisms dictate both processes. The overall goal of this project was to determine whether a causal relationship exists between the rumen microbiome and the host animal's physiology, and if so, to isolate and examine the specific determinants that enable this causality. To this end, we divided the project into three specific parts: (1) determining the feed efficiency of 200 milking cows, (2) determining whether the feed- efficiency phenotype can be transferred by transplantation and (3) isolating and examining microbial consortia that can affect the feed-efficiency phenotype by their transplantation into germ-free ruminants. We finally included 1000 dairy cow metadata in our study that revealed a global core microbiome present in the rumen whose composition and abundance predicted many of the cows’ production phenotypes, including methane emission. Certain members of the core microbiome are heritable and have strong associations to cardinal rumen metabolites and fermentation products that govern the efficiency of milk production. These heritable core microbes therefore present primary targets for rumen manipulation towards sustainable and environmentally friendly agriculture. We then went beyond examining the metagenomic content, and asked whether microbes behave differently with relation to the host efficiency state. We sampled twelve animals with two extreme efficiency phenotypes, high efficiency and low efficiency where the first represents animals that maximize energy utilization from their feed whilst the later represents animals with very low utilization of the energy from their feed. Our analysis revealed differences in two host efficiency states in terms of the microbial expression profiles both with regards to protein identities and quantities. Another aim of the proposal was the cultivation of undescribed rumen microorganisms is one of the most important tasks in rumen microbiology. Our findings from phylogenetic analysis of cultured OTUs on the lower branches of the phylogenetic tree suggest that multifactorial traits govern cultivability. Interestingly, most of the cultured OTUs belonged to the rare rumen biosphere. These cultured OTUs could not be detected in the rumen microbiome, even when we surveyed it across 38 rumen microbiome samples. These findings add another unique dimension to the complexity of the rumen microbiome and suggest that a large number of different organisms can be cultured in a single cultivation effort. In the context of the grant, the establishment of ruminant germ-free facility was possible and preliminary experiments were successful, which open up the way for direct applications of the new concepts discovered here, prior to the larger scale implementation at the agricultural level.

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Weinberg, Zwi G., Richard E. Muck, Nathan Gollop, Gilad Ashbell, Paul J. Weimer et Limin Kung, Jr. effect of lactic acid bacteria silage inoculants on the ruminal ecosystem, fiber digestibility and animal performance. United States Department of Agriculture, septembre 2003. http://dx.doi.org/10.32747/2003.7587222.bard.

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The overall objective of the whole research was to elucidate the mechanisms by which LAB silage inoculants enhance ruminant performance. The results generated will permit the development of better silage inoculants that maximize both silage preservation and animal performance. For this one-year BARD feasibility study, the objectives were to: 1. determine whether lactic acid bacteria (LAB) used in inoculants for silage can survive in rumen fluid (RF) 2.select the inoculants that survived best, and 3. test whether LAB silage inoculants produce bacteriocins-like substances. The most promising strains will be used in the next steps of the research. Silage inoculants containing LAB are used in order to improve forage preservation efficiency. In addition, silage inoculants enhance animal performance in many cases. This includes improvements in feed intake, liveweight gain and milk production in 25-40% of studies reviewed. The cause for the improvement in animal performance is not clear but appears to be other than direct effect of LAB inoculants on silage fermentation. Results from various studies suggest a possible probiotic effect. Our hypothesis is that specific LAB strains interact with rumen microorganisms which results in enhanced rumen functionality and animal performance. The first step of the research is to determine whether LAB of silage inoculants survive in RF. Silage inoculants (12 in the U.S. and 10 in Israel) were added to clarified and strained RF. Inoculation rate was 10 ⁶ (clarified RF), 10⁷ (strained RF) (in the U.S.) and 10⁷, 10⁸ CFU ml⁻¹ in Israel (strained RF). The inoculated RF was incubated for 72 and 96 h at 39°C, with and without 5 g 1⁻¹ glucose. Changes in pH, LAB numbers and fermentation products were monitored throughout the incubation period. The results indicated that LAB silage inoculants can survive in RF. The inoculants with the highest counts after 72 h incubation in rumen fluid were Lactobacillus plantarum MTD1 and a L. plantarum/P. cerevisiae mixture (USA) and Enterococcus faecium strains and Lactobacillus buchneri (Israel). Incubation of rumen fluid with silage LAB inoculants resulted in higher pH values in most cases as compared with that of un-inoculated controls. The magnitude of the effect varied among inoculants and typically was enhanced with the inoculants that survived best. This might suggest the mode of action of LAB silage inoculants in the rumen as higher pH enhances fibrolytic microorganisms in the rumen. Volatile fatty acid (VFA) concentrations in the inoculated RF tended to be lower than in the control RF after incubation. However, L. plalltarull1 MTDI resulted in the highest concentrations of VFA in the RF relative to other inoculants. The implication of this result is not as yet clear. In previous research by others, feeding silages which were inoculated with this strain consistently enhanced animal performance. These finding were recently published in Weinberg et.al.. (2003), J. of Applied Microbiology 94:1066-1071 and in Weinberg et al.. (2003), Applied Biochemistry and Biotechnology (accepted). In addition, some strains in our studies have shown bacteriocins like activity. These included Pediococcus pentosaceus, Enterococcus faecium and Lactobacillus plantarum Mill 1. These results will enable us to continue the research with the LAB strains that survived best in the rumen fluid and have the highest potential to affect the rumen environment.

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