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Rumen-protected methionine during the peripartal period in dairy cows and its effects on abundance of major species of ruminal bacteria

Overview of attention for article published in Journal of Animal Science and Biotechnology, February 2018
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  • In the top 25% of all research outputs scored by Altmetric
  • Among the highest-scoring outputs from this source (#17 of 335)
  • High Attention Score compared to outputs of the same age (80th percentile)

Mentioned by

1 blog
2 tweeters
1 Google+ user


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27 Mendeley
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Rumen-protected methionine during the peripartal period in dairy cows and its effects on abundance of major species of ruminal bacteria
Published in
Journal of Animal Science and Biotechnology, February 2018
DOI 10.1186/s40104-018-0230-8
Pubmed ID

Mohamed K. Abdelmegeid, Ahmed A. Elolimy, Zheng Zhou, Vincenzo Lopreiato, Joshua C. McCann, Juan J. Loor


Extensive degradation of amino acids in the rumen via microbial deamination decreases the post-ruminal availability of dietary indispensable amino acids. Together with the normal decrease in voluntary dry matter intake (DMI) around parturition in dairy cows, microbial metabolism contributes to a markedly negative balance of indispensable amino acids, including methionine which may be the first-limiting for milk production. The main objective of the current study was to profile changes in major bacterial species with key functions in cellulose and hemicellulose digestion, xylan breakdown, proteolytic action, propionic acid production, lactate utilization and ruminal biohydrogenation in cows supplemented with rumen-protected Methionine (SM; Smartamine M, Adisseo NA, Alpharetta, GA, USA) from -23 through 30 d relative to parturition. Because ~90% of the methionine in SM bypasses the rumen, ~10% of the methionine is released into the rumen and can be utilized by microbes. As expected, there was an increase in overall DMI after parturition (Day,P < 0.05) during which cows consumed on average 19.6 kg/d versus 13.9 kg/d in the prepartum period. The postpartum diet contained greater concentrations of lipid and highly-fermentable carbohydrate from corn grain, which likely explains the increases in the relative abundance ofAnaerovibrio lipolytica,Megasphaera elsdenii,Prevotella bryantii,Selenomonas ruminantium,Streptococcus bovis, andSuccinimonas amylolytica. Despite similar DMI prepartum, cows fed SM had greater (Treatment × Day,P< 0.05) abundance prepartum ofFibrobacter succinogenes, Succinimonas amylolytica, andSuccinivibrio dextrinosolvens. However, the greater DMI in cows fed SM after parturition (19.6 kg/d versus 13.9 kg/d) was associated with lower abundance ofFibrobacter succinogenes(2.13 × 10-3versus 2.25 × 10-4) andSelenomonas ruminantium(2.98 × 10-1versus 4.10 × 10-1). A lower abundance (Day,P < 0.05) was detected on d 20 compared with d -10 forFibrobacter succinogenesandSuccinivibrio dextrinosolvens. The relative abundance ofButyrivibrio proteoclasticusandEubacterium ruminantiumwas stable across treatment and time. In diets with proper balance of rumen-degradable protein and fermentable carbohydrate, the small fraction of Methionine released from the rumen-protected supplement did not seem to compromise growth of major bacterial species in the rumen. In fact, it had a positive effect on 3 major species prepartum when DMI was similar between groups. Because the actual requirements of Methionine (and Lysine, for example) by the cow during the transition period are unknown, it appears warranted to study the rumen microbiome as it relates to supply of rumen-protected amino acids.

Twitter Demographics

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Mendeley readers

The data shown below were compiled from readership statistics for 27 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 27 100%

Demographic breakdown

Readers by professional status Count As %
Researcher 5 19%
Professor 4 15%
Student > Master 4 15%
Student > Ph. D. Student 4 15%
Student > Doctoral Student 2 7%
Other 3 11%
Unknown 5 19%
Readers by discipline Count As %
Agricultural and Biological Sciences 13 48%
Chemistry 2 7%
Veterinary Science and Veterinary Medicine 2 7%
Biochemistry, Genetics and Molecular Biology 2 7%
Arts and Humanities 1 4%
Other 1 4%
Unknown 6 22%

Attention Score in Context

This research output has an Altmetric Attention Score of 9. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 18 February 2018.
All research outputs
of 13,786,654 outputs
Outputs from Journal of Animal Science and Biotechnology
of 335 outputs
Outputs of similar age
of 353,807 outputs
Outputs of similar age from Journal of Animal Science and Biotechnology
of 1 outputs
Altmetric has tracked 13,786,654 research outputs across all sources so far. Compared to these this one has done well and is in the 85th percentile: it's in the top 25% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 335 research outputs from this source. They receive a mean Attention Score of 2.3. This one has done particularly well, scoring higher than 94% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 353,807 tracked outputs that were published within six weeks on either side of this one in any source. This one has done well, scoring higher than 80% of its contemporaries.
We're also able to compare this research output to 1 others from the same source and published within six weeks on either side of this one. This one has scored higher than all of them