Browsing by Author "Muwanika, V."

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    East African pigs have a complex Indian, Far Eastern and Western ancestry
    (Animal genetics, 2015) Noce, A.; Amills, M.; Manunza, A.; Muwanika, V.; Muhangi, D.; Aliro, T.; Mayega, J.; Ademun, R.; Egbhalsaied, S.; Mercad, A.; Masembe, C.
    In this study, we have characterized the mitochondrial diversity of 81 swine from Uganda. Median-joining network analysis of D-loop sequences from these individuals and others characterized in previous studies allowed us to determine that Ugandan pigs cluster with populations from the West (Europe/North Africa), Far East and India. In addition, partial sequencing of the Y-chromosome UTY locus in 18 Ugandan domestic pigs revealed the segregation of a single HY1 lineage that has a cosmopolitan distribution. A Western and Far Eastern ancestry for East African pigs had been already reported, but this is the first study demonstrating an additional contribution from the Indian porcine gene pool. This result is consistent with the high frequency of zebuine alleles in cattle from East Africa. The geographic coordinates of East Africa, at the crossroads of many trading routes that, through the ages, linked Europe, Africa and Asia, might explain the rich and complex genetic heritage of livestock native to this area.
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    Farmers’ Preferred Trees Carbon Sequestration Capacity In Lake Victoria’s Rural Landscapes
    (African Journal of Rural Development (AFJRD), 2017) Mwanjalolo, J.G. Majaliwa; Muwanika, V.; Tabuti, J.R.S.; Luswata, C. Kizza; Nampiija, J.; Sebuliba, E.; Mpiira, S.; Nyamukuru, A.
    This study identified the carbon sequestration potential of the most valued trees species by farmers in Mayuge district, Uganda. Composite soil samples were collected 1.5 to 2 m away from the tree trunk for carbon content and bulk density at two different soil depths (0-15 cm and 15-30 cm). Soil samples were collected from eight trees of each species, 8-10 years old, on a lixic ferralsol within a radius of 5 km, occurring in different land-use types including land which had been under fallow for 8-10 years. Soil carbon stock did not significantly vary between the different trees and averaged 31.54 Mg ha-1 and 27.05 Mg ha-1 for 0-15 cm and 15-30 cm soil depth, respectively. The effect of land-use and depth on soil carbon stock varied with tree species (p<0.05). Implications of these findings to future studies in Agroforestry as well as to communities in the Lake Victoria rural landscapes are discussed in this paper.