In vitro screening of anti-methanogenic additives for use in Australian grazing systems
Despite considerable effort to develop and optimise additives to reduce methane emissions from cattle, little information on additive effectiveness exists for cattle under grazing scenarios. As the majority of Australian cattle production occurs on grazing land it is pertinent to report on the use o...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-02-01
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| Series: | Frontiers in Animal Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fanim.2023.1123532/full |
| _version_ | 1811170725362401280 |
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| author | Mariano C. Parra Daniel L. Forwood Alex V. Chaves Sarah J. Meale |
| author_facet | Mariano C. Parra Daniel L. Forwood Alex V. Chaves Sarah J. Meale |
| author_sort | Mariano C. Parra |
| collection | DOAJ |
| description | Despite considerable effort to develop and optimise additives to reduce methane emissions from cattle, little information on additive effectiveness exists for cattle under grazing scenarios. As the majority of Australian cattle production occurs on grazing land it is pertinent to report on the use of additives under simulated conditions. The current study evaluated the addition of nine additives to Rhodes grass hay under in vitro conditions, to estimate their impact on methane (CH4), gas production, and rumen fermentation parameters (volatile fatty acids, rumen pH and in vitro dry matter digestibility [IVDMD]). Citral extract at 0.1% of rumen media decreased all CH4 production parameters, but reduced gas production and digestibility, compared to a 100% hay control. Similarly, Sandalwood essential oil decreased CH4 production at 48 h, IVDMD and gas production, compared to the control. Biochar + nitrates at 5 and 8% DM, and Biochar + Asparagopsis at 5% DM decreased cumulative CH4 production (15.6%, 25.9%, 23.8%, respectively; P < 0.01), compared to the control. No changes in IVDMD and gas production were observed. As such, the biochar additives were considered the most promising additives from those evaluated with a substrate designed to replicate Australian grazing systems. |
| first_indexed | 2024-04-10T17:02:26Z |
| format | Article |
| id | doaj.art-f98bba5985214f2ba6be6aa906130027 |
| institution | Directory Open Access Journal |
| issn | 2673-6225 |
| language | English |
| last_indexed | 2024-04-10T17:02:26Z |
| publishDate | 2023-02-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Animal Science |
| spelling | doaj.art-f98bba5985214f2ba6be6aa9061300272023-02-06T11:44:06ZengFrontiers Media S.A.Frontiers in Animal Science2673-62252023-02-01410.3389/fanim.2023.11235321123532In vitro screening of anti-methanogenic additives for use in Australian grazing systemsMariano C. Parra0Daniel L. Forwood1Alex V. Chaves2Sarah J. Meale3School of Agriculture and Food Science, The University of Queensland, Gatton, QLD, AustraliaSchool of Agriculture and Food Science, The University of Queensland, Gatton, QLD, AustraliaSchool of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, NSW, AustraliaSchool of Agriculture and Food Science, The University of Queensland, Gatton, QLD, AustraliaDespite considerable effort to develop and optimise additives to reduce methane emissions from cattle, little information on additive effectiveness exists for cattle under grazing scenarios. As the majority of Australian cattle production occurs on grazing land it is pertinent to report on the use of additives under simulated conditions. The current study evaluated the addition of nine additives to Rhodes grass hay under in vitro conditions, to estimate their impact on methane (CH4), gas production, and rumen fermentation parameters (volatile fatty acids, rumen pH and in vitro dry matter digestibility [IVDMD]). Citral extract at 0.1% of rumen media decreased all CH4 production parameters, but reduced gas production and digestibility, compared to a 100% hay control. Similarly, Sandalwood essential oil decreased CH4 production at 48 h, IVDMD and gas production, compared to the control. Biochar + nitrates at 5 and 8% DM, and Biochar + Asparagopsis at 5% DM decreased cumulative CH4 production (15.6%, 25.9%, 23.8%, respectively; P < 0.01), compared to the control. No changes in IVDMD and gas production were observed. As such, the biochar additives were considered the most promising additives from those evaluated with a substrate designed to replicate Australian grazing systems.https://www.frontiersin.org/articles/10.3389/fanim.2023.1123532/fullin vitro batch culture fermentationmethaneanti-methanogenic additivesrumen fermentationforage-based diet |
| spellingShingle | Mariano C. Parra Daniel L. Forwood Alex V. Chaves Sarah J. Meale In vitro screening of anti-methanogenic additives for use in Australian grazing systems Frontiers in Animal Science in vitro batch culture fermentation methane anti-methanogenic additives rumen fermentation forage-based diet |
| title | In vitro screening of anti-methanogenic additives for use in Australian grazing systems |
| title_full | In vitro screening of anti-methanogenic additives for use in Australian grazing systems |
| title_fullStr | In vitro screening of anti-methanogenic additives for use in Australian grazing systems |
| title_full_unstemmed | In vitro screening of anti-methanogenic additives for use in Australian grazing systems |
| title_short | In vitro screening of anti-methanogenic additives for use in Australian grazing systems |
| title_sort | in vitro screening of anti methanogenic additives for use in australian grazing systems |
| topic | in vitro batch culture fermentation methane anti-methanogenic additives rumen fermentation forage-based diet |
| url | https://www.frontiersin.org/articles/10.3389/fanim.2023.1123532/full |
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