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Performance and Environmental Benefits from Biochar Supplementation in Beef Cattle Grazing Systems

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Title: Performance and Environmental Benefits from Biochar Supplementation in Beef Cattle Grazing Systems
Author: Conlin, Emily
Department: Department of Animal Biosciences
Program: Animal and Poultry Science
Advisor: Wood, Katharine
Abstract: The objectives for this study included: (1) determining the optimum dose of biochar to reduce enteric methane (CH4) emissions from beef cows (EXP1) and (2) determining whether biochar supplementation can reduce CH4 emissions from cows on pasture (EXP2). In EXP1, pregnant beef cows (n=8) were used in a replicated 4 × 4 Latin square study with biochar supplemented at 0, 1, 2, or 3% of dry matter intake (DMI). In EXP2, 64 cows were allocated to 8 fields (8 cows/field) and using a crossover design, each field was assigned to either control or biochar supplemented at 3% of estimated DMI. Enteric CH4 emissions expressed in g/d, g/kg DMI, or g/kg BW were not affected (P ≥ 0.35) by biochar supplementation in either experiment. Overall, results suggest that biochar supplementation was ineffective for reducing CH4 emissions from beef cows, but animal performance was not affected.
URI: https://hdl.handle.net/10214/26471
Date: 2021-09
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