Methane emission factors for enteric fermentation in beef cattle using IPCC Tier-2 method in Indonesia

Widiawati, Yeni; Rofiq, M. Nasir; Tiesnamurti, Bess

doi:10.14334/jitv.v21i2.1358

Cited by 10 publications

(5 citation statements)

References 16 publications

(16 reference statements)

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“…Approximately 10 mL of medium was collected after 48 h incubation to determine pH, NH 3 concentration and single chain fatty acids (SCFAs) (Sondakh et al, 2017). Based on the proportions of SCFAs, methane production was estimated using the following equation (Widiawati & Thalib, 2007): CH 4 (mM)= (0.5 × acetate concentration) + (0.5 × butyrate concentration) -(0.25 × propionate concentration)…”

Section: In Vitro Assaymentioning

confidence: 99%

Forage-Yield and Nutrient Quality of New Brown Midrib (BMR) Mutant Lines of Sorghum

Wahyono

Indriatama

Sasongko

et al. 2023

Trop. Anim. Sci. J.

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The objective of this study was to evaluate the yield, nutrient profile and in vitro digestibility of new BMR mutant lines of sorghum in Indonesia. These mutant lines were GH2.1, GH2.2, GH2.3, GH4.1, GH4.2, GH4.3 and GH4.4. One sorghum mutant line (CTY) and two national sorghum varieties (Super 1 and Bioguma) were also evaluated as controls. In vitro digestibility and rumen fermentation were measured using Ankom Daisy Fermenter and Hohenheim gas test methods, respectively. In vitro measurement consisted of ten treatments with five replications following a completely randomized design. The highest stem sugar content was found in Bioguma (11.22%) and GH4.4 (9.32%) (p<0.05). The Bioguma variety and the GH2.3 mutant line had a higher number of stem segments and fresh forage yield than the Super 1 variety (p<0.05). A greater concentration of crude protein (CP) was observed for the GH.2.1, GH2.2, GH2.3 and GH4.1 lines (p<0.05). The GH2.3 mutant line had the lowest acid detergent lignin (ADL) content (p<0.05), while Bioguma had the highest level of non-fibre carbohydrate (NFC) compounds (p<0.05). The highest relative feed value (RFV) was observed for the GH2.3 line (p<0.05). Furthermore, GH4.2 and GH2.3 had greater in vitro true digestibility (IVTD) (p<0.05) but were not significantly different from Bioguma. Regarding yield characteristics, nutrient composition and in vitro digestibility values, the highest values were found in the Bioguma variety and the GH2.3 mutant line. Except for n-valerate (nC5), significant differences in all rumen fermentation parameters were observed among sorghum cultivars (p<0.05). Regarding the interrelationship between parameters, we found a medium correlation of DMD with the ADL and cellulose content of sorghum forage (R 2 = -0.489 and R 2 = -0.674, respectively). Based on these findings, the GH2.3 BMR mutant line should be further developed as forage sorghum.

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Section: In Vitro Assaymentioning

confidence: 99%

Forage-Yield and Nutrient Quality of New Brown Midrib (BMR) Mutant Lines of Sorghum

Wahyono

Indriatama

Sasongko

et al. 2023

Trop. Anim. Sci. J.

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“…(1) where: CH4 emission = methane emissions from EnF (kg CH4/year) FE(T) = factor of emission in each type livestock (kg CH4/head/year) N(T) = total of livestock (head) T = type of livestock The factors of emission in EnF and DM are based on [11].…”

Section: Methane Emission (Ch4)mentioning

confidence: 99%

The carbon footprint from ruminant livestock in the breeding-green farm in Jember

Salsabil,

Dhokhikah,

Rohman

2023

IOP Conf. Ser.: Earth Environ. Sci.

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Livestock, especially ruminants, potentially emit nitrous oxide (N2O) and methane (CH4) gas through enteric fermentation activities from the eructation process and dung management (DM) activities. This study aims to determine the emissions gas of CH4 and N2O from livestock ruminants in the livestock breeding-green in Jember. The gas emission calculation method follows an international agreement initiated by the Intergovernmental Panel on Climate Change (IPCC) 2006, with Layer-2 for CH4 and Layer-1 for N2O. The results showed that the amount of CH4 emission from enteric fermentation was 103,321 tons CO2-eq per year, higher than DM, which is 4,510 tons CO2-eq /year. The amount of indirect N2O emissions from DM is 0.0763 tons CO2-eq /year, higher than direct N2O emissions from DM, which is 0.0527 tons CO2-eq /year.

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“…Berdasarkan data yang diperoleh yaitu populasi ternak, struktur populasi, bobot badan ternak, jenis pakan yang diberikan dan jumlah pemberian pakan, maka dapat dilakukan perubahan hitungan emisi gas metana enterik fermentasi dari metode Tier 1 menjadi metode Tier 2. Pada estimasi penghitungan dengan Metode Tier 2, digunakan data yang lebih lengkap dan akurat yaitu struktur populasi dan jenis ternak serta jenis pakan yang diberikan (Widiawati et al 2016) Berdasarkan hasil penghitungan dengan kedua metode yaitu Tier 1 dan Tier 2, maka dapat dilihat bahwa estimasi emisi gas metana dari enterik fermentasi sapi potong yang dihitung dengan menggunakan metode Tier 1 lebih tinggi daripada yang dihitung dengan menggunakan metode Tier 2. Hal ini menunjukkan bahwa hasil estimasi dengan Tier 2 lebih akurat/mendekati kondisi yang sebenarnya.…”

Section: Penurunan Emisi Gas Metana Setelah Perubahan Metode Penghituunclassified

“…Pada metode Tier 1 digunakan populasi total sedangkan pada metode Tier 2 digunakan populasi sesuai level produksi ternak. Demikian pula nilai faktor emisi default untuk metode Tier 1(IPCC 2006), sedangkan untuk metode Tier 2 digunakan faktor emisi local Indonesia(Widiawati et al 2016).…”

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Mitigasi Gas Rumah Kaca Subsektor Peternakan di Kabupaten Subang, Jawa Barat

Nurhayati¹,

Widiawati²

2019

Prosiding Seminar Nasional Teknologi Peternakan Dan Veteriner 2019

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Indonesia has a commitment to reduce Green House Gas (GHG) emission by 29% with its own efforts, and 41% with international support, until 2030. The GHG National Action Plan (RAN GRK) from Bapenas includes activities on monitoring, evaluation and reporting related to mitigation actions from each sector. National program on GHG mitigation action for livestock is feed supplement, which was implemented since 2011 in several provinces including West Java. Subang as one of 14 districts in West Java who received feed supplement program during year 2011-2016. The aim of this activity was to evaluate the GHG mitigation program in 5 subdistrict in Subang, West Java by interviewing farmers who have implemented the feed supplement program. Calculation of reduction CH 4 emission was undertaken by using two methods, Tier 1 and Tier 2. Result showed that about 59.07% of the existing livestock population have received feed supplement in the form of concentrate and legume plants. In Cibogo sub-district 99.29% of farmers raising beef cattle have implemented the program, while the only 35.52% in Tanjungsiang sub-district followed that program indicating high variation in program adoption by farmers in each subdistrict. Mitigation actions by feed supplement program reduced enteric CH 4 emissions from beef cattle by 0.6631 CO 2-eq ton/year (calculated by Tier 1 method), and by 0.0545 CO 2-eq ton/year (calculated by Tier 2 method). It can be concluded that national program of feed supplement (concentrate and legume plant) can reduce GHG emission from livestock.

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Methane emission factors for enteric fermentation in beef cattle using IPCC Tier-2 method in Indonesia

Cited by 10 publications

References 16 publications

Forage-Yield and Nutrient Quality of New Brown Midrib (BMR) Mutant Lines of Sorghum

Forage-Yield and Nutrient Quality of New Brown Midrib (BMR) Mutant Lines of Sorghum

The carbon footprint from ruminant livestock in the breeding-green farm in Jember

Mitigasi Gas Rumah Kaca Subsektor Peternakan di Kabupaten Subang, Jawa Barat

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