J
Jeffrey L. Firkins
Researcher at Ohio State University
Publications - 145
Citations - 8041
Jeffrey L. Firkins is an academic researcher from Ohio State University. The author has contributed to research in topics: Neutral Detergent Fiber & Rumen. The author has an hindex of 49, co-authored 137 publications receiving 7121 citations.
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Special topics--Mitigation of methane and nitrous oxide emissions from animal operations: I. A review of enteric methane mitigation options.
Alexander N. Hristov,Joonpyo Oh,Jeffrey L. Firkins,Jan Dijkstra,Ermias Kebreab,G. Waghorn,H. P. S. Makkar,Adegbola T. Adesogan,W.Z. Yang,Chanhee Lee,Pierre J. Gerber,Benjamin B. Henderson,J.M. Tricarico +12 more
TL;DR: Improve forage quality and the overall efficiency of dietary nutrient use is an effective way of decreasing CH4 Ei, and several feed supplements have a potential to reduce CH4 emission from ruminants although their long-term effect has not been well established and some are toxic or may not be economically feasible.
Journal ArticleDOI
Development of an Assay to Quantify Rumen Ciliate Protozoal Biomass in Cows Using Real-Time PCR
TL;DR: A real-time PCR assay targeting the gene encoding 18S rDNA to quantify the amount of protozoal biomass in ruminal fluid and duodenal digesta and verified constant recovery of background rDNA in duodanal samples regardless of the ratio of target:nontarget rDNA.
Mitigation of greenhouse gas emissions in livestock production - A review of technical options for non-CO2 emissions
Alexander N. Hristov,Joonpyo Oh,C. Lee,Robert J. Meinen,F. Montes,Troy L. Ott,Jeffrey L. Firkins,A. Rotz,Curtis J. Dell,C. Adesogan,W.Z. Yang,J.M. Tricarico,Ermias Kebreab,G. Waghorn,Jan Dijkstra,S.J. Oosting +15 more
TL;DR: In this article, the potential of nutritional, manure and animal husbandry practices for mitigating methane (CH4) and nitrous oxide (N2O) emissions from livestock production was evaluated.
Journal ArticleDOI
Special topics--Mitigation of methane and nitrous oxide emissions from animal operations: III. A review of animal management mitigation options.
Alexander N. Hristov,Troy L. Ott,J.M. Tricarico,A. Rotz,G. Waghorn,Adegbola T. Adesogan,Jan Dijkstra,F. Montes,Joonpyo Oh,Ermias Kebreab,S.J. Oosting,Pierre J. Gerber,Benjamin B. Henderson,H. P. S. Makkar,Jeffrey L. Firkins +14 more
TL;DR: Analysis of published data on animal management practices that mitigate enteric methane (CH4) and nitrous oxide (N2O) emissions from animal operations found that pursuing a suite of intensive and extensive reproductive management technologies provides a significant opportunity to reduce GHG emissions.
Journal ArticleDOI
Effects of grain variability and processing on starch utilization by lactating dairy cattle
TL;DR: Variation in site of digestion and lactation performance among lactating dairy cows fed different grain sources was evaluated and reviewed and the enzymatic assay for starch contributes to variation among and possibly even within experiments.