Supplemental Table S1 for "Effects of dose, dietary nutrient composition, and supplementation period on the efficacy of methane mitigation strategies in dairy cows: A meta-analysis"

The objective of this meta-analysis was to quantify the potential of CH4-mitigating strategies in dairy cattle when accounting for the effects of treatment dose, dietary nutrient composition, and supplementation period. Data from 218 studies with dairy cattle published between 1963 to 2022 were reviewed. Individual CH4 mitigation strategies selected for the analysis were algae (Asparagopsis spp.), 3-nitrooxypropanol, nitrate, lipids, plant secondary compounds, and direct-fed microbials (DFM). Response variables evaluated were daily CH4 emission (g/d), CH4 yield (g CH4/kg DMI), and CH4 intensity [g CH4/kg milk yield (MY) and ECM]. Relative mean difference between treatment and control means reported in the studies were calculated and used in the statistical analysis. Robust variance estimation method was used to analyze the effects of CH4 mitigation strategies. Dose, forage-to-concentrate ratio (F:C), dietary concentrations of CP, ether extract (EE), NDF, ADF, and starch, and supplementation period were used as continuous explanatory variables. Data for algae supplementation were limited and responses to studied species were contrasting but, overall, Asparagopsis spp. effectively decreased daily CH4 emission, CH4 yield, and CH4 intensities by 29.8 ± 4.6, 23.0 ± 5.3, 34.0 ± 4.3, and 22.6 ± 7.3%, respectively. Supplementation of 3-nitrooxypropanol decreased daily CH4 emission, yield, and intensity (per kg MY and ECM) by 28.6 ± 3.5, 28.9 ± 2.6, 29.7 ± 2.9, and 32.1 ± 2.8%, respectively, compared with control. Decreasing dietary fiber (i.e., F:C, NDF, and ADF), whereas increasing dietary starch concentration increased the efficacy of 3-nitrooxypropanol at mitigating enteric CH4 emission. Nitrate supplementation decreased CH4 emission, yield, and intensity (per kg ECM) by 18.5 ± 1.9, 17.6 ± 1.6, and 13.0 ± 0.2%, respectively, compared with control. Efficacy of nitrate at mitigating enteric CH4 yield and CH4 intensity was positively associated with dose, and efficacy of nitrate at mitigating CH4 yield was positively associated with dietary starch concentration. Lipid supplementation decreased CH4 emission, yield, and intensities by up to 14.8 ± 2.3%, respectively, compared with control. Efficacy of lipids supplementation was positively associated with dietary EE, starch, and supplementation period, but negatively associated with dietary ADF concentration. Free oil supplementation tended to increase lipid efficacy by 31% at decreasing CH4 emission, compared with control. Condensed tannins and plant-derived bioactive compounds decreased CH4 yield by 11.3 ± 2.9 and 5.7 ± 2.5%, respectively, but oregano did not affect enteric CH4 emission metrics in the current meta-analysis. Direct-fed microbials were not effective in mitigating enteric CH4 emission variables. Data were limited to determine the effects of dietary nutrients and duration of supplementation on efficacy of Asparagopsis spp., plant secondary compounds and DFM. Overall, supplementation of the diet with 3-nitrooxypropanol, nitrate, and lipids were the most effective strategies for decreasing enteric CH4 emission in dairy cattle. Variability in the efficacy of most CH4 mitigation strategies can be partially explained by differences in treatment dose, dietary nutrient composition, and supplementation period.

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Martins, Leoni; Cueva Welchez, Sergio; Wasson, Derek; Vidal de Almeida, Christine; Eifert, Carlee; de Ondarza, Mary Beth; Tricarico, Juan M.; Hristov, Alexander (2024). Supplemental Table S1 for "Effects of dose, dietary nutrient composition, and supplementation period on the efficacy of methane mitigation strategies in dairy cows: A meta-analysis" [Data set]. Scholarsphere. https://doi.org/10.26207/8w1q-bd16

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Work Title Supplemental Table S1 for "Effects of dose, dietary nutrient composition, and supplementation period on the efficacy of methane mitigation strategies in dairy cows: A meta-analysis"
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Open Access
Creators
  1. Leoni Martins
  2. Sergio Cueva Welchez
  3. Derek Wasson
  4. Christine Vidal de Almeida
  5. Carlee Jean Eifert
  6. Mary Beth de Ondarza
  7. Juan M. Tricarico
  8. Alexander Hristov
License CC BY 4.0 (Attribution)
Work Type Dataset
Publication Date 2024
DOI doi:10.26207/8w1q-bd16
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Deposited May 09, 2024

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    Description
    • The objective of this meta-analysis was to quantify the potential of CH4-mitigating strategies in dairy cattle when accounting for the effects of treatment dose, dietary nutrient composition, and supplementation period. Data from 218 studies with dairy cattle published between 1963 to 2022 were reviewed. Individual CH4 mitigation strategies selected for the analysis were algae (Asparagopsis spp.), 3-nitrooxypropanol, nitrate, lipids, plant secondary compounds, and direct-fed microbials (DFM). Response variables evaluated were daily CH4 emission (g/d), CH4 yield (g CH4/kg DMI), and CH4 intensity [g CH4/kg milk yield (MY) and ECM]. Relative mean difference between treatment and control means reported in the studies were calculated and used in the statistical analysis. Robust variance estimation method was used to analyze the effects of CH4 mitigation strategies. Dose, forage-to-concentrate ratio (F:C), dietary concentrations of CP, ether extract (EE), NDF, ADF, and starch, and supplementation period were used as continuous explanatory variables. Data for algae supplementation were limited and responses to studied species were contrasting but, overall, Asparagopsis spp. effectively decreased daily CH4 emission, CH4 yield, and CH4 intensities by 29.8 ± 4.6, 23.0 ± 5.3, 34.0 ± 4.3, and 22.6 ± 7.3%, respectively. Supplementation of 3-nitrooxypropanol decreased daily CH4 emission, yield, and intensity (per kg MY and ECM) by 28.6 ± 3.5, 28.9 ± 2.6, 29.7 ± 2.9, and 32.1 ± 2.8%, respectively, compared with control. Decreasing dietary fiber (i.e., F:C, NDF, and ADF), whereas increasing dietary starch concentration increased the efficacy of 3-nitrooxypropanol at mitigating enteric CH4 emission. Nitrate supplementation decreased CH4 emission, yield, and intensity (per kg ECM) by 18.5 ± 1.9, 17.6 ± 1.6, and 13.0 ± 0.2%, respectively, compared with control. Efficacy of nitrate at mitigating enteric CH4 yield and CH4 intensity was positively associated with dose, and efficacy of nitrate at mitigating CH4 yield was positively associated with dietary starch concentration. Lipid supplementation decreased CH4 emission, yield, and intensities by up to 14.8 ± 2.3%, respectively, compared with control. Efficacy of lipids supplementation was positively associated with dietary EE, starch, and supplementation period, but negatively associated with dietary ADF concentration. Free oil supplementation tended to increase lipid efficacy by 31% at decreasing CH4 emission, compared with control. Condensed tannins and plant-derived bioactive compounds decreased CH4 yield by 11.3 ± 2.9 and 5.7 ± 2.5%, respectively, but oregano did not affect enteric CH4 emission metrics in the current meta-analysis. Direct-fed microbials were not effective in mitigating enteric CH4 emission variables. Data were limited to determine the effects of dietary nutrients and duration of supplementation on efficacy of Asparagopsis spp., plant secondary compounds and DFM. Overall, supplementation of the diet with 3-nitrooxypropanol, nitrate, and lipids were the most effective strategies for decreasing enteric CH4 emission in dairy cattle. Variability in the efficacy of most CH4 mitigation strategies can be partially explained by differences in treatment dose, dietary nutrient composition, and supplementation period.
    Publication Date
    • 2024
  • Added Creator Leoni Martins
  • Added Creator Sergio Cueva Welchez
  • Added Creator Derek Wasson
  • Added Creator Christine V Almeida
  • Added Creator Carlee Eifeirt
  • Added Creator Mary Beth de Ondarza
  • Added Creator Juan Tricarico
  • Added Creator Alexander Hristov
  • Added Martins et al 2024 - Methane mitigation strategies_Supplemental Table S1.xlsx
  • Added README.rtf
  • Deleted Creator Christine V Almeida
  • Deleted Creator Carlee Eifeirt
  • Deleted Creator Juan Tricarico
  • Added Creator Christine Vidal de Almeida
  • Added Creator Carlee Jean Eifert
  • Added Creator Juan M. Tricarico
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    • https://creativecommons.org/licenses/by/4.0/
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  • Deleted Martins et al 2024 - Methane mitigation strategies_Supplemental Table S1.xlsx
  • Added Martins et al 2024 - Methane mitigation strategies_Supplemental Table S1.xlsx
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  • Updated Related URLs Show Changes
    Related URLs
    • https://doi.org/10.3168/jds.2024-24783