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University of Kassel (2020)

Challenges to ecosystem services of sustainable agriculture in West Africa

Amprako, Louis Kwaku

Titre : Challenges to ecosystem services of sustainable agriculture in West Africa

Auteur : Amprako, Louis Kwaku

Université de soutenance : University of Kassel

Grade : Doktor der Agrarwissenschaften (Dr. agr.) 2020

Résumé partiel
Food security is still sub-optimal in many parts of West Africa calling for more efficient agricultural practices in mitigating food insecurity. Some of the problems faced in West African agricultural systems are bottlenecks in ruminant livestock supply, inefficiency in commercial poultry production, and loss of arthropod diversity. These issues require proper integration of farming systems, demand the closing of nutrient cycles, need diversi cation of production, and require enhancement of ecosystem services. To contribute applicable data for the attainment of the aforementioned, this study investigated four topics of different contexts such as livestock and forage trade, nutrient use efficiency and detoxification of alternative feed through biochar application in poultry production, and lastly ecosystem service provision by studying arthropod diversity in cash crop elds of urban and periurban agricultural systems (UPA). The knowledge of production and consumption regarding livestock and forage trade in West Africa is largely unknown and data are often rough estimates only. To shed light on the routes and hubs of livestock, a study was conducted in Bamako, Mali, where all major roads connecting the city were monitored for 24 hours each day for seven days, across the hot, rainy and harvest seasons. Information was collected on three ruminant livestock, goat, sheep, and cattle transported by vehicles. The origin, destination and quantity of the transported livestock were recorded. Data was also collected on the frequency of animal feed tra cked across these roads. Results showed that sheep were the most tra cked livestock of the three, due to its importance in Islamic festivals. The traffic of cattle and sheep was extensive, whereas the transport of goats was smaller and more localized. The results also showed the importance of Bamako as a hub in the livestock distribution to countries like Guinea and Senegal. Information obtained contributes signi cantly to the understanding of the scope of policy interventions towards further enhancing the efficiency of the livestock production and distribution sector and the enhancing of food security. Another important component of food security is linked with nutrient use efficiency in livestock production systems, including the poultry sector. To specically address this, two experiments about the efficacy of biochar in poultry management were conducted in Tamale, Northern Region, Ghana

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