K
Karen A. Beauchemin
Researcher at Agriculture and Agri-Food Canada
Publications - 445
Citations - 25579
Karen A. Beauchemin is an academic researcher from Agriculture and Agri-Food Canada. The author has contributed to research in topics: Silage & Rumen. The author has an hindex of 83, co-authored 423 publications receiving 22351 citations. Previous affiliations of Karen A. Beauchemin include University of Guelph.
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Journal ArticleDOI
Sustained reduction in methane production from long-term addition of 3-nitrooxypropanol to a beef cattle diet.
Atmir Romero-Pérez,Erasmus Okine,Sean M. McGinn,Le Luo Guan,Masahito Oba,Stephane Duval,Maik Kindermann,Karen A. Beauchemin +7 more
TL;DR: It is demonstrated that the addition of NOP to a diet for beef cattle caused a sustained decrease of methanogenesis, with no sign of adaptation, and that these effects were reversed once NOP addition was discontinued.
Journal Article
Modeling methane production from beef cattle using linear and nonlinear approaches [Erratum: 2009 May, v. 87, no. 5, p. 1849.]
Jennifer L. Ellis,Ermias Kebreab,Nicholas E. Odongo,Karen A. Beauchemin,Sean M. McGinn,J. D. Nkrumah,Stephen S. Moore,R. Christopherson,Gordon K. Murdoch,Brian W. McBride,Erasmus Okine +10 more
TL;DR: In this article, an extensive database of methane production values measured on beef cattle was used to generate linear and non-linear equations to predict methane production from variables that describe the diet.
Journal ArticleDOI
Relationship between rumen methanogens and methane production in dairy cows fed diets supplemented with a feed enzyme additive.
Mi Zhou,Y.-H. Chung,Karen A. Beauchemin,L. Holtshausen,Masahito Oba,Tim A. McAllister,Le Luo Guan +6 more
TL;DR: To investigate the relationship between ruminal methanogen community and host enteric methane (CH4) production in lactating dairy cows fed diets supplemented with an exogenous fibrolytic enzyme additive.
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A fibrolytic enzyme additive for lactating Holstein cow diets: ruminal fermentation, rumen microbial populations, and enteric methane emissions.
Y.-H. Chung,Mi Zhou,L. Holtshausen,Trevor W. Alexander,Tim A. McAllister,Le Luo Guan,Masahito Oba,Karen A. Beauchemin +7 more
TL;DR: A shift in ruminal bacterial communities and higher CH(4) emissions could imply increased ruminal digestion of feed, which needs to be substantiated in longer term studies.
Journal ArticleDOI
Increasing physically effective fiber content of dairy cow diets through forage proportion versus forage chop length: chewing and ruminal pH.
W.Z. Yang,Karen A. Beauchemin +1 more
TL;DR: This study shows that the risk of ruminal acidosis is high for cows fed a low F:C diet, and increasing FPL does not alleviate subacute acidosis because the fermentability of the diet is high and changes in chewing activity are marginal.