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

Abstract Ruminant husbandry contributes to global methane (CH 4 ) emissions and beside its negative impact on the environment, enteric CH cause a loss of gross energy intake in cows. The study is aimed estimate emission metabolic status dairy cows via concentration profile as tool for analyzing CH4 production pattern. included eighteen whose was measured during three consecutive days periods: 2 hours before (P1), 2–4 (P2) 6–8 (P3) after morning feeding. Based emissions, were divided into two groups (n=6, respectively): HM (average concentration: 5430.08 ± 365.92 ppm) LM 1351.85 205.20 ppm). Following measurement, day 3, venous blood sampled determine indicators status. had significantly higher average concentrations, maximum peak amplitude than all measuring periods (P1-P3), while number peaks tended be P2. There no differences width distance among between examined total protein concentrations lower bilirubin NEFA In conclusion, have greater eructations release more per eructation cows, hence are most likely related their liver function.