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Breed and Season-Specific Methane Conversion Factors Influence Methane Emission Factor for Enteric Methane of Dairy Steers

Author

Listed:
  • Mahfuzul Islam

    (Ruminant Nutrition and Anaerobe Laboratory, Department of Animal Science and Technology, Sunchon National University, Suncheon 57922, Korea
    Department of Microbiology and Parasitology, Sher-e-Bangla Agricultural University, Dhaka 1207, Bangladesh
    These authors contributed equally to this work.)

  • Seon-Ho Kim

    (Ruminant Nutrition and Anaerobe Laboratory, Department of Animal Science and Technology, Sunchon National University, Suncheon 57922, Korea
    These authors contributed equally to this work.)

  • A-Rang Son

    (Ruminant Nutrition and Anaerobe Laboratory, Department of Animal Science and Technology, Sunchon National University, Suncheon 57922, Korea)

  • Sung-Sill Lee

    (Institute of Agriculture and Life Science and University-Centered Labs, Gyeongsang National University, Jinju 52828, Korea)

  • Sang-Suk Lee

    (Ruminant Nutrition and Anaerobe Laboratory, Department of Animal Science and Technology, Sunchon National University, Suncheon 57922, Korea)

Abstract

This study determined the breed and the season-specific methane (CH 4 ) conversion factor (Y m ) and the emission factor (EF) for the enteric CH 4 of dairy steers. The Y m values for Holstein and Jersey steers at different seasons were calculated using the IPCC 2006 equations by incorporating the input and/or output value of the chemical composition of feed, methane production, methane yield, dry matter intake, and methane energy emission. EFs were categorized into five types depending on the 2019 refinement to the IPCC 2006 Tier 2 equations used. EF A was calculated from Equation 10.21A (New), while other EFs were estimated from the Equation 10.21 which were designated according to the gross energy intake (GEI) and Y m as EF B (GEI i and Y m ), EF C (GEI ii and Y m ), EF D (GEI ii and Y m (6.3) ), and EF E (GEI ii and Y m (4.0) ). The calculated overall Y m for Holstein and Jersey steers were 4.90 and 7.49, while the recorded EF of group EF A were 56.44 and 67.42 kg CH 4 /head/year for Holstein and Jersey steers, respectively. For Holstein steers, EF D was overestimated (75.91 vs. 48.20~58.15), while in Jersey steers, the EF F underestimated the EF (kg CH 4 /head/year) compared to others (40.15 vs. 63.24~73.28) ( p < 0.05). Mixed analysis revealed that the breed influenced EFs of all the EF groups, while the season, and the breed × the season influenced EFs of group EF C , EF D , and EF F . The overall results recommended using the breed-specific Y m for the estimation of the EF for enteric methane in dairy steers.

Suggested Citation

  • Mahfuzul Islam & Seon-Ho Kim & A-Rang Son & Sung-Sill Lee & Sang-Suk Lee, 2022. "Breed and Season-Specific Methane Conversion Factors Influence Methane Emission Factor for Enteric Methane of Dairy Steers," Sustainability, MDPI, vol. 14(12), pages 1-9, June.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:12:p:7030-:d:834139
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    References listed on IDEAS

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    1. Ridha Ibidhi & Tae-Hoon Kim & Rajaraman Bharanidharan & Hyun-June Lee & Yoo-Kyung Lee & Na-Yeon Kim & Kyoung-Hoon Kim, 2021. "Developing Country-Specific Methane Emission Factors and Carbon Fluxes from Enteric Fermentation in South Korean Dairy Cattle Production," Sustainability, MDPI, vol. 13(16), pages 1-11, August.
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    Cited by:

    1. Janine I. Berdos & Chris Major Ncho & A-Rang Son & Sang-Suk Lee & Seon-Ho Kim, 2023. "Greenhouse Gas (GHG) Emission Estimation for Cattle: Assessing the Potential Role of Real-Time Feed Intake Monitoring," Sustainability, MDPI, vol. 15(20), pages 1-17, October.

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