دورية أكاديمية
Methane emissions and 13C composition from beef steers consuming binary C3-C4 diets.
| العنوان: | Methane emissions and 13C composition from beef steers consuming binary C3-C4 diets. |
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| المؤلفون: | Jaramillo DM; Institute for Environmentally Integrated Dairy Management, USDA-ARS U.S. Dairy Forage Research Center, Marshfield, WI 54449, USA., Ruiz-Moreno M; Agronomy Department, North Florida Research and Education Center, University of Florida, Marianna, FL 32446, USA., Vendramini JMB; Agronomy Department, Range Cattle Research and Education Center, University of Florida, Ona, FL 33865, USA., Sollenberger LE; Agronomy Department, University of Florida, Gainesville, FL 32611, USA., DiLorenzo N; Department of Animal Sciences, North Florida Research and Education Center, University of Florida, Marianna, FL 32446, USA., Queiroz LMD; Agronomy Department, North Florida Research and Education Center, University of Florida, Marianna, FL 32446, USA., Santos ERS; Department of Agricultural, Food, and Nutritional Science, University of Alberta, Edmonton, AB, Canada T6G 2R3., Garcia L; Agronomy Department, North Florida Research and Education Center, University of Florida, Marianna, FL 32446, USA., Abreu DS; Department of Animal Sciences, Federal University of Lavras, Lavras, MG 37200, Brazil., Dubeux JCB; Agronomy Department, North Florida Research and Education Center, University of Florida, Marianna, FL 32446, USA. |
| المصدر: | Journal of animal science [J Anim Sci] 2023 Jan 03; Vol. 101. |
| نوع المنشور: | Randomized Controlled Trial, Veterinary; Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: American Society of Animal Science Country of Publication: United States NLM ID: 8003002 Publication Model: Print Cited Medium: Internet ISSN: 1525-3163 (Electronic) Linking ISSN: 00218812 NLM ISO Abbreviation: J Anim Sci Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Champaign, IL : American Society of Animal Science |
| مواضيع طبية MeSH: | Fabaceae* , Paspalum*, Cattle ; Animals ; Carbon Isotopes ; Methane ; Diet/veterinary ; Ruminants ; Arachis ; Animal Feed/analysis ; Rumen |
| مستخلص: | Improvements in forage nutritive value can reduce methane emission intensity in grazing ruminants. This study was designed to evaluate how the legume rhizoma peanut (Arachis glabrata; RP) inclusion into bahiagrass (Paspalum notatum) hay diets would affect intake and CH4 production in beef steers. We also assessed the potential to estimate the proportion of RP contribution to CH4 emissions using δ13C from enteric CH4. Twenty-five Angus-crossbred steers were randomly allocated to one of five treatments (five steers per treatment blocked by bodyweight): 1) 100% bahiagrass hay (0%RP); 2) 25% RP hay + 75% bahiagrass hay (25%RP); 3) 50% RP hay + 50% bahiagrass hay (50%RP); 4) 75% RP hay + 25% bahiagrass hay (75%RP); 5) 100% RP hay (100%RP). The study was laid out using a randomized complete block design, and the statistical model included fixed effect of treatment, and random effect of block. Methane emissions were collected using sulfur hexafluoride (SF6) technique, and apparent total tract digestibility was estimated utilizing indigestible neutral detergent fiber as an internal marker. A two-pool mixing model was used to predict diet source utilizing CH4 δ13C. Inclusion of RP did not affect intake or CH4 production (P > 0.05). Methane production per animal averaged 250 g CH4/d and 33 g CH4/kg dry matter intake, across treatments. The CH4 δ13C were -55.5, -60.3, -63.25, -63.35, and -68.7 for 0%RP, 25%RP, 50%RP, 75%RP, and 100%RP, respectively, falling within the reported ranges for C3 or C4 forage diets. Moreover, there was a quadratic effect (P = 0.04) on the CH4 δ13C, becoming more depleted (e.g., more negative) as the diet proportion of RP hay increased, appearing to plateau at 75%RP. Regression between predicted and observed proportions of RP in bahiagrass hay diets based on δ13C from CH4 indicate δ13C to be useful (Adj. R2 = 0.89) for predicting the contribution of RP in C3-C4 binary diets. Data from this study indicate that, while CH4 production may not always be reduced with legume inclusion into C4 hay diets, the δ13C technique is indeed useful for tracking the effect of dietary sources on CH4 emissions. (© The Author(s) 2023. Published by Oxford University Press on behalf of the American Society of Animal Science. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.) |
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| معلومات مُعتمدة: | 2015-38420-23700 National Needs Graduate and Postgraduate Fellowship Grants Program |
| فهرسة مساهمة: | Keywords: digestibility; forage; greenhouse gas emissions; intake; ruminant Local Abstract: [plain-language-summary] Investigating methods for reducing enteric methane emissions from ruminant livestock are important to reduce environmental impacts and improving production efficiency through reduced energy losses. This experiment evaluated the effects of increasing proportion of rhizoma peanut hay (a C3 legume) into bahiagrass hay (a C4 grass) on intake and methane production in beef steers. In addition, carbon stable isotopes (13C) of the methane emitted were used to back-calculate the diet components consumed. Angus-crossbred steers were randomly allocated to one of five hay diets (treatments): 1) 100% bahiagrass; 2) 25% rhizoma peanut + 75% bahiagrass; 3) 50% rhizoma peanut + 50% bahiagrass; 4) 75% rhizoma peanut + 25% bahiagrass; 5) 100% rhizoma peanut. Inclusion of rhizoma peanut did not affect intake or methane production, but apparent total tract digestibility increased as proportion of rhizoma peanut increased in the diet. The carbon stable isotope composition observed from enteric methane production was within the expected ranges for C3–C4 forage diets. Furthermore, the carbon stable isotope composition from enteric methane production was useful in predicting contributions from each diet source in C3–C4 binary diets. |
| المشرفين على المادة: | FDJ0A8596D (Carbon-13) 0 (Carbon Isotopes) OP0UW79H66 (Methane) |
| تواريخ الأحداث: | Date Created: 20230606 Date Completed: 20230619 Latest Revision: 20240603 |
| رمز التحديث: | 20240603 |
| مُعرف محوري في PubMed: | PMC10276642 |
| DOI: | 10.1093/jas/skad181 |
| PMID: | 37279326 |
| قاعدة البيانات: | MEDLINE |
| تدمد: | 1525-3163 |
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| DOI: | 10.1093/jas/skad181 |