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You searched for: Publication Year 2011 Remove constraint Publication Year: 2011 Subject term Megasphaera elsdenii Remove constraint Subject term: Megasphaera elsdenii Subject term Butyrivibrio fibrisolvens Remove constraint Subject term: Butyrivibrio fibrisolvens
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1. Effect of ruminal pulse dose of polyunsaturated fatty acids on ruminal microbial populations and duodenal flow and milk profiles of fatty acids

Author:
S.J. Liu; D.P. Bu; J.Q. Wang; P. Sun; H.Y. Wei; L.Y. Zhou; Z.T. Yu
Source:
Journal of dairy science 2011 v.94 no.6 pp. 2977-2985
ISSN:
0022-0302
Subject:
Butyrivibrio fibrisolvens; Fibrobacter succinogenes; Holstein; Megasphaera elsdenii; Ruminococcus flavefaciens; conjugated linoleic acid; dairy cows; diet; docosahexaenoic acid; fatty acid composition; lactation; milk; milk composition; nutritional intervention; population size; rumen; vaccenic acid
Abstract:
... The objective of this study was to examine the effect of ruminal pulse dose of free linoleic acid (LA) and free docosahexaenoic acid (DHA) on microbial populations in the rumen, duodenal fatty acid (FA) flow, milk composition, and milk FA profiles of Chinese Holstein dairy cows. Four rumen- and duodenal-fistulated Chinese Holstein cows in mid lactation (138.5±10d in milk) were randomly assigned to ...
DOI:
10.3168/jds.2010-3109
PubMed:
21605768

2. Fiber digestion, VFA production, and microbial population changes during in vitro ruminal fermentations of mixed rations by monensin-adapted and unadapted microbes

Author:
P.J. Weimer; D.M. Stevenson; D.R. Mertens; M.B. Hall
Source:
Animal feed science and technology 2011 v.169 no.1-2 pp. 68-78
ISSN:
0377-8401
Subject:
Selenomonas ruminantium; Prevotella; acetates; ribosomal RNA; Ruminococcus flavefaciens; propionates; corn oil; genes; cows; population dynamics; rumen bacteria; fermentation; volatile fatty acids; Ruminococcus albus; starch; Fibrobacter succinogenes; butyrates; Streptococcus bovis; Megasphaera elsdenii; rumen fermentation; population size; monensin; quantitative polymerase chain reaction; in vitro digestibility; Butyrivibrio fibrisolvens; Eubacterium ruminantium; Succinivibrio dextrinosolvens; Archaea; environmental factors; pH; Ruminobacter amylophilus
Abstract:
... Mixed ruminal microbes were incubated for 24h in vitro with mixed forage and concentrate rations under conditions that differed in starch level (200 or 300g/kg dry matter (DM)), initial pH (6.3 or 6.7) and corn oil (0 or 10g/kg DM), in order to determine effects on fermentation (fiber digestibility, volatile fatty acid (VFA) production) and relative population sizes (RPS) of various bacterial taxa ...
Handle:
10113/53950
DOI:
10.1016/j.anifeedsci.2011.06.002

3. Review: The use of direct fed microbials to mitigate pathogens and enhance production in cattle

Author:
McAllister, T.A.; Beauchemin, K.A.; Alazzeh, A.Y.; Baah, J.; Teather, R.M.; Stanford, K.
Source:
Canadian journal of animal science 2011 v.91 no.2 pp. 193-211
ISSN:
0008-3984
Subject:
Aspergillus oryzae; Butyrivibrio fibrisolvens; Enterococcus; Escherichia coli O157; GRAS substances; Lactobacillus; Megasphaera elsdenii; Propionibacterium; Saccharomyces cerevisiae; Salmonella; Selenomonas ruminantium; Staphylococcus aureus; bacteria; cattle; digestion; feed conversion; fungi; intestinal microorganisms; microbial communities; milk yield; pathogens; production technology; rumen; ruminal acidosis
Abstract:
... Direct-fed microbials (DFM) have been employed in ruminant production for over 30 yr. Originally, DFM were used primarily in young ruminants to accelerate establishment of the intestinal microflora involved in feed digestion and to promote gut health. Further advancements led to more sophisticated mixtures of DFM that are targeted at improving fiber digestion and preventing ruminal acidosis in mat ...