Browsing by Author "Nsubuga, David"

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    Nutritional properties of some browse species used as goat feed in Pastoral dry lands, Uganda
    (Agroforestry Systems, 2020) Nsubuga, David; Nampanzira, Dorothy K.; Masembe, Charles; Muwanika, Vincent B.
    The nutritional properties of leaves of ten browse species commonly used as goat feed in pastoral drylands of Uganda were evaluated by determining their chemical composition and in vitro gas production. Dry matter (DM) content ranged between 896 and 914 g kg-1 DM and was not significantly different (P[0.05) among the browse species. There was a wide variation in the crude protein (CP) content of the browse species. The highest CP values were observed in Acacia compylacantha, Acacia fruiticosa and Acacia senegal, with 365, 247 and 245 g kg-1 DM respectively, while the lowest was observed in Ganisa similis (150 g kg-1 DM). The NDF values were highest in A. senegal (343 g kg-1 DM) and lowest in A. compylacantha (151 g kg-1 DM). There was no significant difference (P[0.05) in the gas kinetics and total volume of gas produced by the browse species.
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    Occurence of Culturable Vibrio cholerae from Lake Victoria, and Rift Valley Lakes Albert and George, Uganda
    (Lakes & Reservoirs: Research & Management, 2012) Kaddumukasa, Martha; Nsubuga, David; Muyodi, Fredrick J.
    Vibrio cholerae, a bacterium that causes cholera, poses a human health risk when consumed via untreated or contaminated water. Monthly investigations into the presence of V. cholerae from Lakes Albert, George and Victoria were conducted, with the goal being to examine the relationship between the occurrences of V. cholerae with various water quality parameters at fish landing sites in major water bodies in Uganda. The pH, temperature and electrical conductivity were measured at three fishing sites in each of the three study lakes; namely Gabba in Lake Victoria, Butiaba in Lake Albert and Kayanzi in Lake George. The pH values varied from 7.76 to 9.36 at Butiaba, 8.68 to 9.85 at Kayanzi and 6.6 to 9.88 at Ggaba. The temperature ranged from 17.9 to 32.3 C at Butiaba, 22.5 to 29 C at Kayanzi and 18.2 to 30.5 C at Ggaba. The electrical conductivity ranged from 129.2 to 984 lS cm)1 at Butiaba, 658 to 1090 lS cm)1 at Kayanzi and 119 to 218 lS cm)1 at Ggaba, for Lakes Albert, George and Victoria, respectively. Enrichment techniques were used to detect culturable V. cholerae on TCBS culture media. Seventy-five (75%) of the samples (n = 90) were positive for V. cholera. The occurrence of V. cholerae was positively associated with water quality parameters over the 10-month period of study. Vibrio cholerae was more frequently detected during the dry season (warmer) than during the wet season. These study results suggest the investigated study lakes are natural reservoirs for V. cholerae.
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    Sedentarization among nomadic pastoralists of Uganda: which way to feed livestock?
    (Agroforestry Systems, 2019) Muwanika, Vincent B.; Kabi, Fredrick; Nampanzira, Dorothy K.; Nsubuga, David; Masembe, Charles
    Abstract Pastoral nomadic communities of East Africa’s drylands are gradually shifting towards a sedentary type of production. However, successful animal production under such settings demands for integrated on-farm management of the various animal feed resources. The objective of this study was to characterize feed resources of goats in the pastoral area of Karamoja sub-region, a dry land area in northeastern Uganda. Structured interviews were conducted involving 300 randomly selected households. Results revealed seventy plant species distributed in 31 families were fed to goats. The species were dominated by browses (trees and shrubs) 54%; herbs 21%; grasses 19%; climbers and hedges 5%. Balanites aegyptica, Grewia similis, Acacia sieberiana, Acalypha fruticosa, Acacia albida and Cadaba farinosa were the most frequently mentioned browse species. Farmers also use these species for other purposes notably building, human and livestock medicine, fencing, firewood and as vegetables during the dry season. Browses were available throughout the year unlike grasses and crop residues that were available seasonally. Since browses were available throughout the year in addition to being multipurpose, it is recommended that current efforts to actualize a sedentary lifestyle among Karamoja pastoralists integrate the planting and management of the most reported browse species in this study