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    Nutritional evaluation of tropical forage grass alone and grass-legume diets to reduce in vitro methane production

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    Journal Article (787.8Kb)
    Authors
    Quintero-Anzueta, Stiven
    Molina-Botero, Isabel Cristina
    Ramirez-Navas, Juan Sebastian
    Rao, Idupulapati M.
    Chirinda, Ngonidzashe
    Barahona Rosales, Rolando
    Moorby, Jon
    Arango, Jacobo
    Date Issued
    2021-06
    Language
    en
    Type
    Journal Article
    Review status
    Peer Review
    ISI journal
    Accessibility
    Open Access
    Usage rights
    CC-BY-4.0
    Metadata
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    Citation
    Quintero-Anzuela, S.; Molina-Botero, I.C.; Ramirez-Navas, J.S.; Rao, I.; Chirinda, N.; Barahona-Rosales, R.; Moorby, J.; Arango, J. (2021) Nutritional evaluation of tropical forage grass alone and grass-legume diets to reduce in vitro methane production. Frontiers in Sustainable Food Systems 5:663003. ISSN: 2571-581X
    Permanent link to cite or share this item: https://hdl.handle.net/10568/114525
    External link to download this item: https://www.frontiersin.org/articles/10.3389/fsufs.2021.663003/full
    DOI: https://doi.org/10.3389/fsufs.2021.663003
    Abstract/Description
    Forage grass nutritional quality directly affects animal feed intake, productivity, and enteric methane (CH4) emissions. This study evaluated the nutritional quality, in vitro enteric CH4 emission potential, and optimization of diets based on two widely grown tropical forage grasses either alone or mixed with legumes. The grasses Urochloa hybrid cv. Cayman (UHC) and U. brizantha cv. Toledo (UBT), which typically have low concentrations of crude protein (CP), were incubated in vitro either alone or mixed with the legumes Canavalia brasiliensis (CB) and Leucaena diversifolia (LD), which have higher CP concentrations. Substitution of 30% of the grass dry matter (DM) with CB or LD did not affect gas production or DM degradability. After 96h of incubation, accumulated CH4 was 87.3mg CH4 g−1 DM and 107.7mg CH4 g−1 DM for the grasses alone (UHC and UBT, respectively), and 100.7mg CH4 g−1 DM and 113.2mg CH4 g−1 DM for combined diets (70% grass, 15% CB, and 15% LD). Diets that combined legumes (CB or LC) and grass (UHC or UBT) had higher CP contents, gross, and metabolizable energy (GE, ME, respectively) densities, as well as lower concentrations of neutral detergent fiber (NDF) and acid detergent lignin (ADL). The ME and nutritional variables such as NFD, tannins (T), and CP showed a positive correlation with in vitro net gas production, while ruminal digestibility was affected by CP, ADL, T, and GE. Optimal ratios of components for ruminant diets to reduce rumen net gas production and increase protein content were found with mixtures consisting of 60% grass (either UHC or UBT), 30% CB, and 10% LD. However, this ratio did not result in a decrease in CH4 production.
    CGIAR Author ORCID iDs
    Jacobo Arangohttps://orcid.org/0000-0002-4828-9398
    Idupulapati M. Raohttps://orcid.org/0000-0002-8381-9358
    Ngonidzashe Chirindahttps://orcid.org/0000-0002-4213-6294
    Other CGIAR Affiliations
    Livestock
    AGROVOC Keywords
    forage; feed legumes; nutritive value; livestock; methane emission; forrajes; leguminosas forrajeras; ganado; emisiones de metano
    Subjects
    LIVESTOCK; TROPICAL FORAGES;
    Organizations Affiliated to the Authors
    Alliance of Bioversity International and CIAT; Universidad del Valle; University of Santiago de Cali; Universidad Nacional Agraria, Peru; Agricultural Innovations and Technology Transfer Centre; Universidad Nacional de Colombia; Aberystwyth University
    Collections
    • Alliance Bioversity CIAT Journal Articles [1011]
    • CRP Livestock journal articles [699]
    • Research Lever 6: Crops for Nutrition and Health [805]

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