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Enteric Methane Emissions and Animal Performance in Dairy and Beef Cattle Production: Strategies, Opportunities, and Impact of Reducing Emissions
| Content Provider | MDPI |
|---|---|
| Author | Min, Byeng-Ryel Lee, Seul Jung, Hyunjung Miller, Daniel N. Chen, Rui |
| Copyright Year | 2022 |
| Description | Enteric methane $(CH_{4}$) emissions produced by microbial fermentation in the rumen resulting in the emission of greenhouse gases (GHG) into the atmosphere. The GHG emissions reduction from the livestock industry can be attained by increasing production efficiency and improving feed efficiency, by lowering the emission intensity of production, or by combining the two. In this work, information was compiled from peer-reviewed studies to analyze $CH_{4}$ emissions calculated per unit of milk production, energy-corrected milk (ECM), average daily gain (ADG), dry matter intake (DMI), and gross energy intake (GEI), and related emissions to rumen fermentation profiles (volatile fatty acids [VFA], hydrogen $[H_{2}$]) and microflora activities in the rumen of beef and dairy cattle. For dairy cattle, there was a positive correlation (p < 0.001) between $CH_{4}$ emissions and DMI $(R^{2}$ = 0.44), milk production $(R^{2}$ = 0.37; p < 0.001), ECM $(R^{2}$ = 0.46), GEI $(R^{2}$ = 0.50), and acetate/propionate (A/P) ratio $(R^{2}$ = 0.45). For beef cattle, $CH_{4}$ emissions were positively correlated (p < 0.05–0.001) with DMI $(R^{2}$ = 0.37) and GEI $(R^{2}$ = 0.74). Additionally, the ADG $(R^{2}$ = 0.19; p < 0.01) and A/P ratio $(R^{2}$ = 0.15; p < 0.05) were significantly associated with $CH_{4}$ emission in beef steers. This information may lead to cost-effective methods to reduce enteric $CH_{4}$ production from cattle. We conclude that enteric $CH_{4}$ emissions per unit of ECM, GEI, and ADG, as well as rumen fermentation profiles, show great potential for estimating enteric $CH_{4}$ emissions. |
| Starting Page | 948 |
| e-ISSN | 20762615 |
| DOI | 10.3390/ani12080948 |
| Journal | Animals |
| Issue Number | 8 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-04-07 |
| Access Restriction | Open |
| Subject Keyword | Animals Environmental Engineering Beef Cattle Dairy Cattle Methanogenesis Rumen Average Daily Gain Milk Production |
| Content Type | Text |
| Resource Type | Article |
