Tags

Type your tag names separated by a space and hit enter

Ruminal fermentation and enteric methane production of legumes containing condensed tannins fed in continuous culture.
J Dairy Sci. 2020 Aug; 103(8):7028-7038.JD

Abstract

A continuous-culture fermentor study was conducted to assess nutrient digestibilities, volatile fatty acid (VFA) concentrations, microbial protein synthesis, bacterial nitrogen (N) efficiency, and enteric methane (CH4) production of four 50:50 grass-legume diets, randomly assigned in a 4 × 4 Latin square design. Four legumes with different concentrations of condensed tannins (CT) were tested: alfalfa [ALF; Medicago sativa L., non-CT legume]; birdsfoot trefoil [BFT; Lotus corniculatus L., low-CT legume]; crown vetch [CV; Securigera varia (L.) Lassen, moderate-CT legume]; and sericea lespedeza [SL; Lespedeza cuneata (Dum. Cours.) G. Don, high-CT legume]. Orchardgrass (Dactylis glomerata L.) was the common forage used in all diets. Four fermentors were evaluated over four 10-d periods by feeding 82 g of dry matter (DM)/d in 4 equal feedings. Methane output was recorded every 10 min. Effluent samples were collected during the last 3 d of the experiment, composited by fermentor and period, and analyzed for pH and VFA, as well as DM, organic matter, crude protein, neutral detergent fiber, and acid detergent fiber for determination of apparent and true nutrient digestibilities. Microbial protein synthesis and bacterial efficiency were estimated by analysis of N flows and purines. The CT concentrations were 3, 21, 38 and 76 g/kg of DM for ALF, BFT, CV, and SL diets, respectively. The SL diet had decreased fiber digestibilities and total VFA concentrations compared with the other diets. This resulted in the least total CH4 production in the SL diet. Bacterial N efficiency per kilogram of organic matter truly digested was lower in the SL diet than in the BFT and CV diets. The lowest CH4 production per unit of digestible nutrients was also found in the SL diet. Further work should be conducted to find optimal diets (by testing other legumes, rations, and sources of CT) for reducing CH4 emissions without negatively affecting ruminal digestion to maintain or improve productivity.

Authors+Show Affiliations

USDA-Agricultural Research Service, Pasture Systems and Watershed Management Research Unit, University Park, PA 16802-3702.USDA-Agricultural Research Service, Pasture Systems and Watershed Management Research Unit, University Park, PA 16802-3702.USDA-Agricultural Research Service, Pasture Systems and Watershed Management Research Unit, University Park, PA 16802-3702. Electronic address: Kathy.Soder@usda.gov.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32475672

Citation

Roca-Fernández, Ana I., et al. "Ruminal Fermentation and Enteric Methane Production of Legumes Containing Condensed Tannins Fed in Continuous Culture." Journal of Dairy Science, vol. 103, no. 8, 2020, pp. 7028-7038.
Roca-Fernández AI, Dillard SL, Soder KJ. Ruminal fermentation and enteric methane production of legumes containing condensed tannins fed in continuous culture. J Dairy Sci. 2020;103(8):7028-7038.
Roca-Fernández, A. I., Dillard, S. L., & Soder, K. J. (2020). Ruminal fermentation and enteric methane production of legumes containing condensed tannins fed in continuous culture. Journal of Dairy Science, 103(8), 7028-7038. https://doi.org/10.3168/jds.2019-17627
Roca-Fernández AI, Dillard SL, Soder KJ. Ruminal Fermentation and Enteric Methane Production of Legumes Containing Condensed Tannins Fed in Continuous Culture. J Dairy Sci. 2020;103(8):7028-7038. PubMed PMID: 32475672.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ruminal fermentation and enteric methane production of legumes containing condensed tannins fed in continuous culture. AU - Roca-Fernández,Ana I, AU - Dillard,S Leanne, AU - Soder,Kathy J, Y1 - 2020/05/29/ PY - 2019/09/23/received PY - 2020/03/12/accepted PY - 2020/6/2/pubmed PY - 2020/6/2/medline PY - 2020/6/2/entrez KW - condensed tannin KW - digestibility KW - legume KW - methane SP - 7028 EP - 7038 JF - Journal of dairy science JO - J. Dairy Sci. VL - 103 IS - 8 N2 - A continuous-culture fermentor study was conducted to assess nutrient digestibilities, volatile fatty acid (VFA) concentrations, microbial protein synthesis, bacterial nitrogen (N) efficiency, and enteric methane (CH4) production of four 50:50 grass-legume diets, randomly assigned in a 4 × 4 Latin square design. Four legumes with different concentrations of condensed tannins (CT) were tested: alfalfa [ALF; Medicago sativa L., non-CT legume]; birdsfoot trefoil [BFT; Lotus corniculatus L., low-CT legume]; crown vetch [CV; Securigera varia (L.) Lassen, moderate-CT legume]; and sericea lespedeza [SL; Lespedeza cuneata (Dum. Cours.) G. Don, high-CT legume]. Orchardgrass (Dactylis glomerata L.) was the common forage used in all diets. Four fermentors were evaluated over four 10-d periods by feeding 82 g of dry matter (DM)/d in 4 equal feedings. Methane output was recorded every 10 min. Effluent samples were collected during the last 3 d of the experiment, composited by fermentor and period, and analyzed for pH and VFA, as well as DM, organic matter, crude protein, neutral detergent fiber, and acid detergent fiber for determination of apparent and true nutrient digestibilities. Microbial protein synthesis and bacterial efficiency were estimated by analysis of N flows and purines. The CT concentrations were 3, 21, 38 and 76 g/kg of DM for ALF, BFT, CV, and SL diets, respectively. The SL diet had decreased fiber digestibilities and total VFA concentrations compared with the other diets. This resulted in the least total CH4 production in the SL diet. Bacterial N efficiency per kilogram of organic matter truly digested was lower in the SL diet than in the BFT and CV diets. The lowest CH4 production per unit of digestible nutrients was also found in the SL diet. Further work should be conducted to find optimal diets (by testing other legumes, rations, and sources of CT) for reducing CH4 emissions without negatively affecting ruminal digestion to maintain or improve productivity. SN - 1525-3198 UR - https://www.unboundmedicine.com/medline/citation/32475672/Ruminal_fermentation_and_enteric_methane_production_of_legumes_containing_condensed_tannins_fed_in_continuous_culture L2 - https://linkinghub.elsevier.com/retrieve/pii/S0022-0302(20)30401-X DB - PRIME DP - Unbound Medicine ER -
Try the Free App:
Prime PubMed app for iOS iPhone iPad
Prime PubMed app for Android
Prime PubMed is provided
free to individuals by:
Unbound Medicine.