TY - JOUR
T1 - Development of prediction equation for methane-related traits in beef cattle under high concentrate diets
AU - Uemoto, Yoshinobu
AU - Ogawa, Shinichiro
AU - Satoh, Masahiro
AU - Abe, Hiroyuki
AU - Terada, Fuminori
N1 - Funding Information:
This study was supported by the Ministry of Agriculture, Forestry and Fisheries of Japan, via the Commissioned project study named “Development of the climate change mitigation technology in livestock sector”.
Publisher Copyright:
© 2020 Japanese Society of Animal Science
PY - 2020/1/1
Y1 - 2020/1/1
N2 - The objective of this study was to develop a prediction equation for methane-related traits in beef cattle and evaluate this equation using datasets with different cattle breeds and roughage rates. Enteric methane emission (CH4, l/day) was measured using open-circuit respiration chambers. Dry matter intake (DMI, kg/day), body weight (BW, kg), daily gain (DG, kg), total digestible nutrients (TDN, %DMI), and roughage rate (Rrate, %) were used as independent variables, and methane-related traits—CH4, CH4 per DMI (CH4/DMI, l/kg), and methane conversion factor (MCF, %)—were used as dependent variables. The best-fit equations to predict methane-related traits using a total of 76 records were CH4 = –676.7 + 0.04194 × BW + 29.88 × DMI + 7.883 × TDN + 4.367 × Rrate, CH4/DMI = –52.24 – 1.193 × 10–3 × BW – 5.905 × DG + 1.077 × TDN + 0.5008 × Rrate, and MCF = –11.43 – 5.308 × 10–4 × BW – 1.223 × DG + 0.2336 × TDN + 0.1157 × Rrate. The predictive ability of the developed equations differed between roughage rates but not between breeds. For CH4, the predictive ability of the developed equations was better compared with previously reported equations in the low roughage rate dataset, but not in the high roughage rate dataset. Our results suggest that the developed equations of methane-related traits can be applied in beef cattle fed with low roughage diets.
AB - The objective of this study was to develop a prediction equation for methane-related traits in beef cattle and evaluate this equation using datasets with different cattle breeds and roughage rates. Enteric methane emission (CH4, l/day) was measured using open-circuit respiration chambers. Dry matter intake (DMI, kg/day), body weight (BW, kg), daily gain (DG, kg), total digestible nutrients (TDN, %DMI), and roughage rate (Rrate, %) were used as independent variables, and methane-related traits—CH4, CH4 per DMI (CH4/DMI, l/kg), and methane conversion factor (MCF, %)—were used as dependent variables. The best-fit equations to predict methane-related traits using a total of 76 records were CH4 = –676.7 + 0.04194 × BW + 29.88 × DMI + 7.883 × TDN + 4.367 × Rrate, CH4/DMI = –52.24 – 1.193 × 10–3 × BW – 5.905 × DG + 1.077 × TDN + 0.5008 × Rrate, and MCF = –11.43 – 5.308 × 10–4 × BW – 1.223 × DG + 0.2336 × TDN + 0.1157 × Rrate. The predictive ability of the developed equations differed between roughage rates but not between breeds. For CH4, the predictive ability of the developed equations was better compared with previously reported equations in the low roughage rate dataset, but not in the high roughage rate dataset. Our results suggest that the developed equations of methane-related traits can be applied in beef cattle fed with low roughage diets.
KW - beef cattle
KW - enteric methane emission
KW - open-circuit respiration chambers
KW - prediction equation
KW - roughage rate
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U2 - 10.1111/asj.13341
DO - 10.1111/asj.13341
M3 - Article
C2 - 32219938
AN - SCOPUS:85080980402
VL - 91
JO - Animal Science Journal
JF - Animal Science Journal
SN - 1344-3941
IS - 1
M1 - e13341
ER -