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Methane Emission and Metabolic Status in Peak Lactating Dairy Cows and Their Assessment Via Methane Concentration Profile

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  • معلومة اضافية
    • Publisher Information:
      Sciendo 2023
    • نبذة مختصرة :
      Ruminant husbandry contributes to global methane (CH4) emissions and beside its negative impact on the environment, enteric CH4 emissions cause a loss of gross energy intake in cows. The study is aimed to estimate CH4 emission and metabolic status in dairy cows via the methane concentration profile as a tool for analyzing the CH4 production pattern. The study included eighteen cows whose enteric CH4 emission was measured during three consecutive days in three periods: 2 hours before (P1), 2-4 hours (P2) and 6-8 hours (P3) after the morning feeding. Based on CH4 enteric emissions, cows were divided into two groups (n=6, respectively): HM (average CH4 concentration: 5430.08 ± 365.92 ppm) and LM (average CH4 concentration: 1351.85 ± 205.20 ppm). Following CH4 measurement, on day 3, venous blood was sampled to determine the indicators of the metabolic status. HM cows had significantly higher average CH4 concentrations, maximum and average CH4 peak amplitude than LM cows in all measuring periods (P1-P3), while the number of CH4 peaks tended to be higher in HM than in LM cows in P2. There were no differences in the maximum and average CH4 peak width and average distance among two CH4 peaks between examined groups of cows. HM cows had significantly higher total protein concentrations and significantly lower total bilirubin and NEFA concentrations than LM cows. In conclusion, HM cows have a greater number of eructations and release more CH4 per eructation than LM cows, hence the differences in metabolic status are most likely related to the differences in their liver function.
    • الموضوع:
      dairy cows; methane emission; metabolic status; article
    • Availability:
      Open access content. Open access content
      https://creativecommons.org/licenses/by/4.0
      BY
      openAccess
    • Note:
      Acta Veterinaria
      English
    • Other Numbers:
      RSPST oai:vet-erinar.vet.bg.ac.rs:123456789/2814
      0567-8315
      https://vet-erinar.vet.bg.ac.rs/handle/123456789/2814
      10.2478/acve-2023-0006
      1376689307
    • Contributing Source:
      UIVERSITY OF BELGRADE
      From OAIster®, provided by the OCLC Cooperative.
    • الرقم المعرف:
      edsoai.on1376689307
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