Greenhouse gas emissions from Uganda's cattle corridor farming systems

Kiggundu, Nicholas; Ddungu, Stanley Peter; Wanyama, Joshua; Cherotich, Sam; Mpairwe, D.; Zziwa, Emmanuel; Mutebi, Faizal; Falcucci, Alessandra

doi:10.1016/j.agsy.2019.102649

Cited by 23 publications

(19 citation statements)

References 31 publications

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“…The largest contribution of methane from rumen enteric fermentation to total GHG emissions in our study (83%) was comparable to results found by Kiggundu et al (2019) and FAO and NZAGRC (2019). In their studies enteric methane contributed 76% and 79% to total GHG emissions, respectively.…”

Section: Figuresupporting

confidence: 89%

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Technical performance and carbon footprint of commercial dairy farms in South West Uganda

Vries

Twongyirwe

2022

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The aim of the present study was to evaluate technical performance and carbon footprint of 101 dairy farms participating the dairy development project SNV TIDE in south western Uganda. Results showed that average 24-h milk yield per lactating cow was 7.1 ± 2.0 (SD) kg/cow/d, and estimated annual milk yield was 1626 ± 614 kg/cow/y. Average calving interval was 483 ± 64 days, mortality rate of adult cows was 3.2 ± 4.8 % per farm, and average culling rate of adult cows was 18 ± 15 % per farm.With regard to the carbon footprint of farms, estimated average greenhouse gas (GHG) emission intensity was 2.1 kg CO2-eq per kg fat and protein correct milk and 13.6 kg CO2-eq per kg live weight.Most important sources of GHG emissions were rumen enteric fermentation (83%), followed by manure (11%), and feed production (5%). GHG emission intensity was lower in specialized farms than in mixed crop-livestock farms; lower in farms with supplemental feeding besides grazing than in farms with grazing only; and in farms with crossbreds than in farms with HF as predominant breed. GHG emission intensity was highest in Ntungamo district (2.6 kg CO2-eq/kg FPCM) and lowest in Kiruhura district (1.8 kg CO2-eq/kg FPCM).

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Section: Figuresupporting

confidence: 89%

“…Recent modelling studies showed various effective mitigation options for the Ugandan dairy sector, including, e.g. improved forages, water harvesting, improved dairy breeds, and animal health interventions (FAO and New Zealand Agricultural Greenhouse Gas Research Centre, 2019;Kiggundu et al, 2019).…”

Section: Conclusion and Recommendationsmentioning

confidence: 99%

Technical performance and carbon footprint of commercial dairy farms in South West Uganda

Vries

Twongyirwe

2022

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“…Cattle farming, in particular, is of great importance across the globe. Taking the example of Uganda, cattle population is growing at a rate of 3% per annum [3,4] leading to increased production of cattle manure. Cattle manure has many uses; it improves soil properties, provides crop nutrients, and acts as a source of energy and construction material [2].…”

Section: Introductionmentioning

confidence: 99%

Assessment of a Cattle Manure Vermicomposting System Using Material Flow Analysis: A Case Study from Uganda

et al. 2019

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Growth in cattle population is associated with increased manure generation whose current management in low-income countries is associated with health and environmental problems as well as low utilization rates. This trend can be reversed by promoting better manure management technologies. This study assessed vermicomposting as one of the technologies to manage organic wastes, using the case study in Uganda. A vermicomposting system using cattle manure and earthworms (Eudrilus euginea) was monitored for one year with the harvesting of products (compost, earthworm biomass) after every three months. Vermicompost samples from the beginning of the experiment and after every harvest were analyzed for the following parameters: pH, ash content, volatile and total solids, nutrients N, P, K, and C. Emissions of CO2, CH4, NH3, and N2O were also measured. Material flow analysis was used to determine the flows and retention of nutrients within the system. Results showed that total solids, ash, N, P, and K content significantly increased, while contents of volatile solids and C, as well as the pH, significantly decreased over time. Of the materials that entered the vermicomposting system, 46% went to vermicompost, 2% into earthworms, and 52% was lost to the atmosphere. Substance flow analysis showed that 30% of C went to vermicompost, 69% was emitted to the atmosphere, and 2% ended up in earthworms while 75% of N was transferred to vermicompost, 7% went to earthworms, and 18% escaped into the atmosphere. The cumulative emissions were 102 g CO2 kg−1 waste, 7.6 g CH4 kg−1 waste, and 3.943 × 10−5 g N2O kg−1 waste on a dry basis, while NH3 was not detected throughout the measurement time. Compared to other manure management methods, vermicomposting demonstrated good potential in conserving nutrients as well as reducing greenhouse gas emissions.

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“…Jayanegara et al (2018) reported that tannins had the ability to limit extensive proteolysis, which indicated N. cadamba leaf meal could be potentially used to enhance nitrogen conservation during the ensiling of legumes. Tannins (both hydrolyzable and condensed tannins) or tannin-containing forages are proved to be effective in reduction of greenhouse gases by ruminants (Kiggundu et al, 2019;Ugbogu et al, 2019). Therefore, mixing N. cadamba leaf meal might be helpful to reduce protein degradation, improve the fermentation quality of silage, and decrease the greenhouse gas emission from ruminants.…”

Section: Characteristics Of Fresh Stylo and N Cadamba Leaves Prior To...mentioning

confidence: 99%

Effects of Forestry Waste Neolamarckia cadamba Leaf Meal as an Additive on Fermentation Quality, Antioxidant Activity, and Bacterial Community of High-Moisture Stylo Silage

Gao

Chen

et al. 2022

Front. Environ. Sci.

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N. cadamba leaves, a byproduct of wood production, are always discarded in the field. N. cadamba leaves have strong antibacterial property, which might be recycled to inhibit undesirable bacteria and enhance the fermentation quality of silage. Ensiling, a traditional conservation method for animal feed, is commonly used all over the world. It is known that high-moisture forages, especially legumes, are difficult to ensile directly as much ammonia-N and butyric acid produced by undesirable bacteria will reduce the feeding value. To investigate the effects of N. cadamba leaf meal on the fermentation quality of stylo silage, 5% and 10% N. cadamba leaf meal were mixed with stylo for 30 days of ensiling in two independent experiments. Results showed that the silage pH and butyric acid content of stylo silage were decreased (p < 0.01) by 10% N. cadamba leaf meal. In experiment 2, contents of nonprotein-N and ammonia-N were significantly decreased (p < 0.05), while the true protein content was significantly increased (p < 0.05). The same results on the changing tendency were also obtained in experiment 1. In addition, N. cadamba leaf meal addition also decreased the bacterial diversity. The relative abundance of Clostridium and Lelliottia decreased, whereas that of Lactobacillus increased when N. cadamba leaf meal was added. It is worth noting that the addition of N. cadamba leaf meal also improved the antioxidant activity of stylo silage. The aforementioned results suggested that mixing N. cadamba leaf meal to high moisture forages could be an effective strategy to enhance silage fermentation quality, and it is also a feasible way to recycle N. cadamba leaves.

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Greenhouse gas emissions from Uganda's cattle corridor farming systems

Cited by 23 publications

References 31 publications

Technical performance and carbon footprint of commercial dairy farms in South West Uganda

Technical performance and carbon footprint of commercial dairy farms in South West Uganda

Assessment of a Cattle Manure Vermicomposting System Using Material Flow Analysis: A Case Study from Uganda

Effects of Forestry Waste Neolamarckia cadamba Leaf Meal as an Additive on Fermentation Quality, Antioxidant Activity, and Bacterial Community of High-Moisture Stylo Silage

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