Browsing by Author "Christine Kyarimpa"

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    Effect of supplemental diets based on Ficusnatalensis and Harrisoniaabyssinica on the meat quality of tethered indigenous goat meat
    (Agroforestry Systems, 2025-09-11) Dorothy, Kalule Nampanzira; Justus Kwetegyeka; Kamatara Kanifa; Denis Asizua; Christine Kyarimpa; Muhammad Kiggundu; Constantine Bakyusa Katongole; John David Kabasa; Sam Okello; John Robert Stephen Tabuti
    This study evaluated the effect of supplementing pasture diets with Ficus natalensis and Harrisonia abyssinica foliage on chemical composition and meat quality of tethered indigenous goats. Forty growing intact male goats were assigned to one of five treatment diets: (i) tethering alone (control (C)), (ii) tethering plus molasses (CM), (iii) tethering plus Harrisonia abyssinica leaves with molasses (HM), (iv) tethering plus Ficus natalensis leaves with molasses (FM) and (v) tethering plus Ficus natalensis and Harrisonia abyssinica with molasses (FHM). At the end of the feeding trial, goats were slaughtered and samples of the Longissimus dorsi (LD) muscle and subcutaneous fat were collected for chemical and fatty acid analysis. Diet did not affect cooking loss or shear force values (P > 0.05). Cooking loss ranged between 10.88% (lowest in CM) to18.93% (highest in FM), while shear force ranged from 21.16 N (lowest in CM) to 32.49 N (highest in FM). Protein content varied from 18.2% (lowest in HM) to 21.12% (highest in FHM), and crude lipid content ranged between 0.33 and 5.95%. Fat content and fatty acid composition, total SFA, total MUFA, total PUFA, n3,n6, PUFA:SFA ratio and n6/n3 ratio were also not affected (P > 0.05) by diet. The muscle fatty acid (FA) profile was dominated by oleic (1.472–3.097 mg/g), followed by Palmitic acid (1.229–2.079 mg/g) and stearic acid (1.125–2.066 mg/g). The total SFA ranged between 2.474 mg/g and 4.261 mg/g and total MUFA ranged between 1.641 and 3.451 mg/g. The PUFA:SFA ratio varied from 0.337 (FM) and 0.535 (FHM), the n6/n3 ratio ranged between 1.107 and 4.035. Supplementing tethered indigenous goats with F. natalensis and H. abyssinica did not significantly affect meat quality attributes, but all diets produced lean, tender, and nutritionally healthy meat, highlighting the potential of native browse species to enhance goat meat quality in low-input silvopastoral systems.
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    Legacy and emerging organic pollutants in indoor and outdoor environments in Africa: Contamination levels, health risks, and analytical techniques
    (ScienceDirect, 2025-01-02) Godfrey, Muhwezi; Christine Kyarimpa; Christine Betty Nagawa; Solomon Omwoma; Henry Matovu; Julius Matsiko; Silver Odongo; Douglas Sifuna; Ivan Spanik; Charles Drago Kato; Patrick Ssebugere; Gumula Ivan
    The World Health Organisation reported that over 20 % of the global disease burden and deaths are caused by environmental factors such as air and dust pollution. Legacy organic pollutants (LOPs) and emerging organic pollutants (EOPs) are among the biggest contributors to this burden. Herein we reviewed literature published for the period 2000e2023 on selected LOPs and EOPs in indoor dust and outdoor air in Africa to understand the occurrence, associated human health risks and common analytical techniques used to identify and quantify these contaminants. The findings revealed generally lower contamination levels for most pollutants than that in most regions outside Africa except for PCBs in outdoor air and OCPs in indoor settled dust. Apart from a few studies for polychlorinated biphenyls (PCBs), most studies reported hazard index (HI) values less than 1 for outdoor air and indoor dust exposure, which suggested negligible non-carcinogenic risks in children and adults. Gas Chromatography and mass spectrometry were the most frequently used analytical techniques for both air and dust probably due to their sensitivity and selectivity in detecting chemical traces at the pg m3 and ng g 1 levels. Although the current contamination levels are generally low, their synergistic and cumulative effects may in the long run affect the environment and human health. There is also a paucity of data on most contaminants, especially for PCNs, and PFASs in both outdoor air and dust. Coordinated efforts are needed to limit the trade, importation, and disposal of products containing LOPs and EOPs in Africa. ©2025 The Authors. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license