Innovations in Value-Addition of Agricultural By-Products in Uganda

Nsubuga, Denis; Banadda, Noble; Kiggundu, Nicholas

doi:10.4236/jep.2019.1011089

Cited by 16 publications

(13 citation statements)

References 27 publications

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“…Animals are good source of food, income through tourism whereas byproducts especially hides and skins are essential raw materials in leather processing industry [43,44]. Ticks injuries and flushes on animal hides and skins lead to massive economic losses and rejection of raw material in tannery industry [16].…”

Section: Discussionmentioning

confidence: 99%

Susceptibility of Different Species of Ticks (Acari: Ixodidae) to an Entomopathogenic Fungus in Tanzania

Zekeya¹,

Er²,

Ndossi³

2020

J Anim Sci Res

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Volume 4 -Issue 2 of leather products affecting economy of the country [15][16][17]. Impacts of ticks do not end on large mammals but also small ruminant and birds including ostrich leading to severe skin damage and loss [13,[18][19][20][21]. However, poor animal keeping and grazing method such as free range landraces especially in pastoralist communities have been reported to amplify the problem in Africa including Tanzania [22][23][24]. The hard ticks especially the A. gemma and R. appendiculatus are the main cause of skins and hides damage in Africa [25,26] whereas H. marginatum infest bird skin as well. The overall effect of tick on animals and birds lead to downgrading of hides and skins and finally rejection by processing industries [16,15]. In Somalia and Ethiopia for instance, Ticks and Tick-Borne Diseases (TTBDs) have been reported to have high impact on tannery industry leading to sluggish in leather industry [27][28][29].Management of ticks has been solely based on chemicals through spray and dipping of animals in chemical such as organophosphate

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Section: Discussionmentioning

confidence: 99%

Susceptibility of Different Species of Ticks (Acari: Ixodidae) to an Entomopathogenic Fungus in Tanzania

Zekeya¹,

Er²,

Ndossi³

2020

J Anim Sci Res

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“…The biggest percentage of market wastes comes from fruits and vegetables (figure 2) like mangoes, pumpkins, pine apples, jackfruit, water melon, cabbage, greens, among others (Nsubuga et al, 2019;Schöbitz et al, 2014). Katongole et al, (2011) Note.…”

Section: Composition Of Market Crop Wastementioning

confidence: 99%

A Review of Bio-Processing of Market Crop Waste to Poultry Feed in Uganda

Kisuule¹,

Kiggundu²,

Banadda³

2020

JSD

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This paper reviews the current state of bio-processing of market waste to poultry feed in Uganda. A focus was put on crop wastes since previous studies have indicated that, they contribute the biggest percentage (about 90%) of the total organic waste generated in markets. These wastes majorly comprise of fruits and vegetables like mangoes, pineapples, jackfruit, watermelon, cabbage among others. They are usually in form of residual stalks, leaves, peels, and damaged/rotten crops. Crop wastes are rich in various bioactive and nutraceutical compounds, like carotenoids, polyphenols and dietary fiber. The wastes are a major worthwhile raw material and present feasible solutions to the problems of poultry feed scarcity and high costs associated with the conventional feed stuffs. This transformation can be achieved by developing appropriate technologies for valorization of wastes by nutrient enrichment. In concern to this, solid state fermentation (SSF) and rearing insects and earthworm using crop wastes are the promising novel technologies. High value added products/feeds can be produced through microbial fermentation of crop wastes. Insect protein can also be produced to replace the expensive silver fish and soybean protein sources. The review indicated that, the technologies have not been fully cherished within the country’s poultry feed industry. All the attempts and work done are still under research and pilot scale level. However, the on-going endeavors are continued widely to better conversion technologies in order to produce products that are safe for poultry feeding. Lastly, the limitations and strategies for processing poultry feed from market waste are reviewed.

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“…CD generated by 1000 birds per day was estimated at 80 kg for layers and 120 kg for broilers. This is equivalent to 0.1 kg per bird per day [7,8]. Furthermore, several studies have emphasised that animal waste (i.e., CD, cow manure, etc.)…”

Section: Introductionmentioning

confidence: 99%

Anaerobic Digestion, Codigestion of Food Waste, and Chicken Dung: Correlation of Kinetic Parameters with Digester Performance and On-Farm Electrical Energy Generation Potential

et al. 2022

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Valorization of agro-food waste through anaerobic digestion (AD) is gaining prominence as alternative method of waste minimization and renewable energy production. The aim of this study was to identify the key parameters for digester performance subjected to kinetic study and semicontinuous operation. Biochemical methane potential (BMP) tests were conducted in two different operating conditions: without mixing (WM) and continuous mixing (CM). Three different substrates, including food waste (FW), chicken dung (CD), and codigestion of FW and CD (FWCD) were used. Further kinetic evaluation was performed to identify mixing’s effect on kinetic parameters and correlation of the kinetic parameters with digester performance (volatile solid removal (VS%) and specific methane production (SMP)). The four models applied were: modified Gompertz, logistic, first-order, and Monod. It was found that the CM mode revealed higher values of Rm and k as compared to the WM mode, and the trend was consistently observed in the modified Gompertz model. Nonetheless, the logistic model demonstrated good correlation of kinetic parameters with VS% and SMP. In the continuous systems, the optimum OLR was recorded at 4, 5, and 7 g VS/L/d for FW, CD, and FWCD respectively. Therefore, it was deduced that codigestion significantly improved digester performance. Electrical energy generation at the laboratory scale was 0.002, 0.003, and 0.006 kWh for the FW, CD, and FWCD substrates, respectively. Thus, projected electrical energy generation at the on-farm scale was 372 kWh, 382 kWh, and 518 kWh per day, respectively. Hence, the output could be used as a precursor for large-scale digester-system optimization.

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Innovations in Value-Addition of Agricultural By-Products in Uganda

Cited by 16 publications

References 27 publications

Susceptibility of Different Species of Ticks (Acari: Ixodidae) to an Entomopathogenic Fungus in Tanzania

Susceptibility of Different Species of Ticks (Acari: Ixodidae) to an Entomopathogenic Fungus in Tanzania

A Review of Bio-Processing of Market Crop Waste to Poultry Feed in Uganda

Anaerobic Digestion, Codigestion of Food Waste, and Chicken Dung: Correlation of Kinetic Parameters with Digester Performance and On-Farm Electrical Energy Generation Potential

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