Animal Disease Challenges to the Emergence of Pastoralism in Sub-Saharan Africa

Despite the antiquity of domestic cattle in the Sahara-Sahel, archaeological evidence from two sub-Saharan regions indicates that the first pastoralist colonization of sub-Saharan Africa may not have proceeded so smoothly as modern appearances suggest. The first appearance of cattle-based economies seems to have been delayed by as much as a thousand years after the first appearance of small stock, in both eastern and southern Africa. This article reviews the relevant archaeological evidence and argues that the lag in successful introduction of cattle stems from new animal diseases encountered by pastoral colonists entering biogeographic zones south of the Sahel. Diseases that are often fatal to cattle, including wildebeest-derived malignant catarrhal fever (WD-MCF), East Coast fever (ECF), foot-and-mouth disease (FMD), and Rift Valley fever (RVF), as well as trypanosomiasis, are described as probable barriers to the early entry of cattle-based economies into these regions.Malgré l'antiquité des animaux domestiques dans le Sahara-Sahel, les données archéologique de deux régions subsahariennes indiquent que les premières colonisations pastoraux des zones au sud du Sahel ne se propagèrent pas aussi promptement que suggèrent les apparences actuelles. En l'Afrique orientale et en l'Afrique du sud, l'apparition d'économies basées sur l'élevage des gros bovins paraît être retardée de quelque mille ans par rapport à l'apparition des petits ruminants domestiques dans ces mêmes régions. L'article recense les données archéologiques pertinentes et propose que le délai de l'introduction effective des gros bovins fût causée par des nouvelles maladies vétérinaires rencontrées par les premiers colonisateurs pastoraux entrant dans les zones biogéographiques au sud du Sahel. Des maladies fréquemment fatales aux gros bovins, telle que le coryza gangreneux, la thèleriose, la fièvre aphteuse, l'arbovirus des Bunyaviridae, aussi bien que la trypanosomiase, sont proposées comme des obstacles probables à la diffusion des économies à gros bovins dans ces régions.     

Radiographic evidence for changing patterns of animal exploitation in the Southern levant

Radiographs were taken of sheep (Ovis aries) and goat (Capra hircus) metacarpals from archaeological sites in Israel dating from the Pre-Pottery Neolithic B (PPNB) to recent times. From these radiographs the combined cortical thickness (CCT) of the bones was measured, and used to estimate sample variation in bone mass. The samples were compared by species and period, and further compared with CCT values obtained for a recent sample of ibex (Capra ibex nubiana) from the same region. For all periods studied, CCT values in goats were comparable with those of recent ibex. A significant reduction in CCT values of both sheep and goats was found in the Early Bronze to recent samples as compared with the Chalcolithic and PPNB samples. It is proposed that this reduction in CCT values is associated with the presence of older, female animals in the later samples studied, and may be indicative of an emphasis on milk herds.     

Holey Goats: Multiple Cases of Supratrochlear Foramina in the Humerus of Caprines from the New Kingdom Pharaonic Town of Amara West,Northern Sudan

Supratrochlear foramina (STF) were recorded in fifteen per cent of goat and sheep/goat humeri from the New Kingdom pharaonic town of Amara West, in modern northern Sudan. To the authors’ knowledge, this trait has never before been reported in the published literature for goats or sheep, whether from archaeological or modern contexts. The aim of this work is twofold: to contribute to the growing corpus of studies addressing the incidence and aetiology of STF, and to raise awareness for their possible presence in caprines, thus encouraging their identification and recording in archaeological assemblages.