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Joel W. Ochieng

Researcher at University of Nairobi

Publications -  37
Citations -  1450

Joel W. Ochieng is an academic researcher from University of Nairobi. The author has contributed to research in topics: Population & Corymbia. The author has an hindex of 14, co-authored 35 publications receiving 1352 citations. Previous affiliations of Joel W. Ochieng include International Livestock Research Institute & Southern Cross University.

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Journal ArticleDOI

African pastoralism: genetic imprints of origins and migrations.

TL;DR: The genetic signatures of its origins, secondary movements, and differentiation through the study of 15 microsatellite loci in 50 indigenous cattle breeds spanning the present cattle distribution in Africa reveal a major entry point through the Horn and the East Coast of Africa and two modes of introgression into the continent.
Journal ArticleDOI

Geographic distribution and frequency of a taurine Bos taurus and an indicine Bos indicus Y specific allele amongst sub-Saharan African cattle breeds.

TL;DR: Human migration, phenotypic preferences by the pastoralists, adaptation to specific habitats and to specific diseases are the main factors explaining the present‐day distribution of the alleles in sub‐Saharan Africa.
Journal ArticleDOI

Hybridization of banteng (Bos javanicus) and zebu (Bos indicus) revealed by mitochondrial DNA, satellite DNA, AFLP and microsatellites

TL;DR: Analysis of hybridization of banteng and zebu in south-east Asian cattle using mitochondrial DNA, AFLP, satellite fragment length polymorphisms, and microsatellite genotyping found tools suitable for the detection of species in introgression studies, which are essential for the genetic description of local breeds and the preservation of their economic and cultural value.
Book ChapterDOI

Production of Anthocyanins in Grape Cell Cultures: A potential Source of Raw Material for Pharmaceutical, Food, and Cosmetic Industries

TL;DR: In this paper, the authors demonstrated that simultaneous production of anthocyanins and betalains is possible in cell cultures and seedlings of producing plants by introducing and ex-pression of genes encoding dihydroxyphenylalanine (L-DOPA) dioxygenases in combination with substrate precursor feeding.
Journal ArticleDOI

Genetic diversity and relationships of indigenous Kenyan camel (Camelus dromedarius) populations: implications for their classification

TL;DR: The results do not support the present classification of the indigenous Kenyan dromedary into four distinct breeds based on socio-geographical criteria and point to just two separate genetic entities, the Somali and a group including the Gabbra, Rendille and Turkana populations.