Comparison of Methane Production in Korean Native Cattle (Hanwoo) Fed Different Grain Sources

Seol, Yong Joo; Kim, Kyoung Hoon; Baek, Youl Chang; Lee, Sang Cheol; Ok, Ji Woun; Lee, Kang Yeon; Hong, Sung Kee; Park, Kyu Hyun; Choi, Chang Weon; Lee, Sung Sil; Oh, Young Kyun

doi:10.5187/jast.2011.53.2.161

Cited by 7 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These were much higher than the default values in the IPCC Tier 2 and the values previously measured in Hanwoo steers. A study measuring CH 4 emissions of growing Hanwoo steers using a hood-type chamber system, reported that MCF of growing Hanwoo steers was 5.5 and 6.5 % with corn- and barley-based diets, respectively (Seol et al 2011 ). The same group also showed that the MCF of Hanwoo steers in feedlots was 5 and 4 % with corn- and barley-based diets, respectively (Seol et al 2012 ).…”

Section: Discussionmentioning

confidence: 99%

Comparison of models for estimating methane emission factor for enteric fermentation of growing-finishing Hanwoo steers

Kim

Seo

2016

SpringerPlus

View full text Add to dashboard Cite

The methodology provided by the Intergovernmental Panel on Climate Change (IPCC) guidelines is widely used for estimating enteric methane (CH 4 ) production by cattle. No attempt other than the default values in the IPCC Tier 1 has been made for estimating CH 4 emission from Hanwoo, a dominant beef species in Korea raised in a unique feeding system. The objective of this study was to compare models for estimating the CH 4 emission factor (MEF; kg CH 4 /head/year) for enteric fermentation in Hanwoo steers. The MEF was estimated based on Korea-and Hanwoo-specific data obtained from the literature using several models. The models include the IPCC Tier 1 (T1), the IPCC Tier 2 method (T2), the IPCC Tier 2 methodology with actual dry matter intake (T2DMI), and the Japanese Tier 3 method (JT3). The JT3 was included due to the similarity in the beef cattle production system between the two countries. Estimated MEF using T2 were 43.4, 33.9, and 36.2 kg CH 4 /head/year for the growing, finishing, and overall period, respectively. The overall MEF estimated using T2 was 23 % lower than the estimate by T1 (47.0 kg CH 4 /head/year). There were significant differences in the estimated MEF for enteric fermentation of Hanwoo steers among the methods (P < 0.05). The overall MEF estimated by JT3 was 69.1 kg CH 4 /head/year, which was significantly higher than the estimates by T2 (36.2 kg) and T2DMI (33.5 kg). The JT3 estimated the highest values in all periods possibly due to overestimation of the conversion ratio of feed energy to CH 4 . No significant difference was found in the overall MEF of Hanwoo steers between T2 and T2DMI. However, T2DMI estimated 8 % higher and 14 % lower MEF than T2 for the growing and finishing period, respectively, mainly because the T2 significantly over-predicts the gross energy intake of Hanwoo steers at the high level of intake. The IPCC default methods have limitations in their use for a feeding systems in non-western countries, and thus development of a country-specific methodology and parameter estimates for enteric CH 4 production is required for Hanwoo and other cattle production systems.

show abstract

Section: Discussionmentioning

confidence: 99%

Comparison of models for estimating methane emission factor for enteric fermentation of growing-finishing Hanwoo steers

Kim

Seo

2016

SpringerPlus

View full text Add to dashboard Cite

show abstract

“…The full database of the individual observations used in the current study is described in the Supplementary Information (Table S1). These papers and reports were chosen, because they reported experiments involving growing steers (n = 36) [10][11][12], fattening steers (n = 54) [13], growing heifers (n = 20) [12] and breeding cows (n = 31) [14] in which direct measurements of faecal, urinary and methane losses were made with an indirect respiratory calorimetry chamber [10,14] and head hood chamber system [11][12][13] across a wide range of diet qualities. Specifically, the selected papers represented a wide range of dietary DE (1.70 to 3.51 Mcal/kg DM), ME (1.44 to 3.21 Mcal/kg DM), crude protein (CP, 5.61% to 17.05%), ether extract (EE, 1.05% to 3.28%), neutral detergent fibre (NDF, 30.36% to 72.0%) and acid detergent fibre (ADF, 16.20% to 44.81%) concentrations (DM basis).…”

Section: Database Source and Descriptionmentioning

confidence: 99%

Developing Equations for Converting Digestible Energy to Metabolizable Energy for Korean Hanwoo Beef Cattle

Ibidhi

Bharanidharan

Kim

et al. 2021

Animals

Self Cite

View full text Add to dashboard Cite

This study was performed to update and generate prediction equations for converting digestible energy (DE) to metabolizable energy (ME) for Korean Hanwoo beef cattle, taking into consideration the gender (male and female) and body weights (BW above and below 350 kg) of the animals. The data consisted of 141 measurements from respiratory chambers with a wide range of diets and energy intake levels. A simple linear regression of the overall unadjusted data suggested a strong relationship between the DE and ME (Mcal/kg DM): ME = 0.8722 × DE + 0.0016 (coefficient of determination (R2) = 0.946, root mean square error (RMSE) = 0.107, p < 0.001 for intercept and slope). Mixed-model regression analyses to adjust for the effects of the experiment from which the data were obtained similarly showed a strong linear relationship between the DE and ME (Mcal/kg of DM): ME = 0.9215 × DE − 0.1434 (R2 = 0.999, RMSE = 0.004, p < 0.001 for the intercept and slope). The DE was strongly related to the ME for both genders: ME = 0.8621 × DE + 0.0808 (R2 = 0.9600, RMSE = 0.083, p < 0.001 for the intercept and slope) and ME = 0.7785 × DE + 0.1546 (R2 = 0.971, RMSE = 0.070, p < 0.001 for the intercept and slope) for male and female Hanwoo cattle, respectively. By BW, the simple linear regression similarly showed a strong relationship between the DE and ME for Hanwoo above and below 350 kg BW: ME = 0.9833 × DE − 0.2760 (R2 = 0.991, RMSE = 0.055, p < 0.001 for the intercept and slope) and ME = 0.72975 × DE + 0.38744 (R2 = 0.913, RMSE = 0.100, p < 0.001 for the intercept and slope), respectively. A multiple regression using the DE and dietary factors as independent variables did not improve the accuracy of the ME prediction (ME = 1.149 × DE − 0.045 × crude protein + 0.011 × neutral detergent fibre − 0.027 × acid detergent fibre + 0.683).

show abstract

Developing emission factors for dairy cow enteric fermentation in Korea

Lee

et al. 2018

Journal of Cleaner Production

View full text Add to dashboard Cite

Comparison of Methane Production in Korean Native Cattle (Hanwoo) Fed Different Grain Sources

Cited by 7 publications

References 8 publications

Comparison of models for estimating methane emission factor for enteric fermentation of growing-finishing Hanwoo steers

Comparison of models for estimating methane emission factor for enteric fermentation of growing-finishing Hanwoo steers

Developing Equations for Converting Digestible Energy to Metabolizable Energy for Korean Hanwoo Beef Cattle

Developing emission factors for dairy cow enteric fermentation in Korea

Contact Info

Product

Resources

About