En Algérie, l'élevage du dromadaire joue un rôle primordial dans l'optique de la sécurité alimentaire des communautés sahariennes et steppiques. Cet article a pour objectif d'étudier l'évolution des effectifs camelins dans les différents territoires correspondants aux Sahara, Atlas Saharien et Steppe et ce durant la période 2000-2015. Les données statistiques nationales recueillies auprès du Ministère de l'Agriculture, du développement Rural et de la pêche ont permis de localiser la distribution des effectifs camelins par zone agroécologique et de constater que les effectifs de dromadaires à l'échelle nationale ont connu une augmentation. La répartition des effectifs par zone bioclimatique a mis en exergue que les effectifs localisés au niveau des territoires Saharien et Atlas Saharien connaissent une évolution stable, voir une progression relativement lente. L'expansion des effectifs au niveau des territoires hyperarides s'explique d'une part par le développement des filières (lait et viande) liés à une forte demandes des populations autochtones et d'autre part par les politiques de subvention des aliments de bétail. Par contre, l'évolution dans les territoires steppiques permet d'observer une évolution en dents de scie. La conjonction des effets de sécheresses et des politiques agricoles semblent expliquer cette tendance à la régression. (Résumé d'auteur)

peer reviewed | The sexual activity of 237 ewes of the most representative of Algerian sheep breeds (about 70%): the "Ouled Djellal", was studied during the anestrous season i.e. in spring (April 2016), in Constantine, a north-eastern Algerian province. A number of 50 ewes, chosen randomly from the flock, were subjected to a double injection of PGF2α at an 11 days’ interval and the 187 females remaining have served as a control group. 80% of the ewes treated started mating about 60 hours after the release, with the whole flock, of 14 rams that have been previously separated from the flock but not sensory isolated. A lambing percentage of 90 spread over 23 days and 98.9 spread over 47 days occurred respectively in the treated and control group. Both treated and untreated ewes with PGF2α exhibited estrus (April and May), got pregnant and lambed within a period of less than 2 months. The use of PGF2α, through the luteolysis it induces during spring: first confirms the results of previous studies reporting the ability of “Ouled Djellal” ewe to exhibit sexual activity throughout the year, second shortens considerably the laming period and last and more importantly can be substituted to the use of the progestogens impregnated sponges, far more invasive, time consuming and more costly, as a means to manipulate the female sexual activity.

On-host behaviour of Rhipicephalus appendiculatus was studied in the field in Bungoma County in Kenya to evaluate the putative repellent effects of essential oils of Tagetes minuta and Tithonia diversifolia at its predilection feeding site. Oils of both plants caused a disruption of orientation, movement and attachment behaviour of ticks. More ticks dropped off in the treatments with the two essential oils than with the control. Treating the ear pinna with the essential oil of T. minuta caused the highest percentage of ticks to drop off the host body. No tick reached the ear pinna treated with the essential oil of T. minuta and up to 30% of ticks (from the forehead release site) reached the ear base. When the ear pinna was treated with the essential oil of T. diversifolia, one tick reached the ear pinna and up to 40% of ticks (from the dewlap release site) reached the ear base. The results show that T. minuta repels ticks more strongly than T. diversifolia. However, both essential oils offer possibilities for exploitation of potentially effective and environmentally acceptable tools for on-host tick control.

On-host behaviour of Rhipicephalus appendiculatus was studied in the field in Bungoma County in Kenya to evaluate the putative repellent effects of essential oils of Tagetes minuta and Tithonia diversifolia at its predilection feeding site. Oils of both plants caused a disruption of orientation, movement and attachment behaviour of ticks. More ticks dropped off in the treatments with the two essential oils than with the control. Treating the ear pinna with the essential oil of T. minuta caused the highest percentage of ticks to drop off the host body. No tick reached the ear pinna treated with the essential oil of T. minuta and up to 30% of ticks (from the forehead release site) reached the ear base. When the ear pinna was treated with the essential oil of T. diversifolia, one tick reached the ear pinna and up to 40% of ticks (from the dewlap release site) reached the ear base. The results show that T. minuta repels ticks more strongly than T. diversifolia. However, both essential oils offer possibilities for exploitation of potentially effective and environmentally acceptable tools for on-host tick control.

The Annual 24th International Scientific Conference ‘Research for Rural Development 2018’ was special and dedicated to the Latvia a 100 years since became an independent state, 155th Anniversary of Latvia University of Life Sciences and Technologies (LLU) and 280th Anniversary of Jelgava palace, where is located the main building of university. In the retrospect of four months later, we can count the Conference as a great success as interdisciplinary studies. The theme – Research for Rural Development - attracted participation more than 167 researchers with very different backgrounds. There were 139 presentations from different universities of Estonia, Poland, Kazakhstan, Lithuania, Ukraine, Sweden, South Africa, Indonesia, Russia and Latvia. The interdisciplinary proceedings of the Annual 24th International Scientific Conference ‘Research for Rural Development 2018’ (two volumes since 2010) are intended for academics, students and professionals. The subjects covered by those issues are crop production, animal breeding, agricultural engineering, agrarian and regional economics, food sciences, veterinary medicine, forestry, wood processing, water management, environmental engineering, landscape architecture, information and communication technologies.

Credible quantitative and qualitative information on existing capacities in agricultural higher education agencies in Africa are crucial for strategic planning, policy formulation, setting priorities and benchmarks, measuring progress toward benchmarks, and identifying capacity gaps. Decisionmakers require a solid understanding of existing staffing and student capacities in the higher education sector, as well as in the wider agricultural innovation systems in Africa south of the Sahara. Access to such information supports effective policymaking to address capacity issues in higher education, agricultural research, extension, and other areas. Such information remains extremely limited, however. To fill this need, the International Food Policy Research Institute’s Agricultural Science and Technology Indicators (ASTI/IFPRI) and the Regional Universities Forum for Capacity Building in Agriculture (RUFORUM) initiated a partnership to pilot the collection of this type of data for RUFORUM’s member universities. This factsheet presents the available data results for Africa University, Faculty of Agriculture and Natural Resources. An online version of the data is available via the Portal on Agricultural Capacity in RUFORUM Universities: www.asti.cgiar.org/RUFORUM.